content stringlengths 15 7.12M | publicationDate stringlengths 10 10 | abstract stringlengths 41 2.5k | title stringlengths 14 230 | id stringlengths 11 12 |
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Co 2FeAl thin films grown on MgO substrates: Correlation between static, dynamic and structural properties M. Belmeguenai1, H. Tuzcuoglu1, M. S. Gabor2, T. Petrisor jr2, C. Tiusan2;3, D. Berling4, F. Zighem1, T. Chauveau1, S. M. Chérif1and P. Moch1 1Laboratoire des Sciences des Procédés et des Matériaux, CNRS - Universi... | 2013-05-03 | Co2FeAl (CFA) thin films with thickness varying from 10 nm to 115 nm have
been deposited on MgO(001) substrates by magnetron sputtering and then capped
by Ta or Cr layer. X-rays diffraction (XRD) revealed that the cubic $[001]$ CFA
axis is normal to the substrate and that all the CFA films exhibit full
epitaxial growth... | Co2 FeAl thin films grown on MgO substrates: Correlation between static, dynamic and structural properties | 1305.0714v1 |
1 Laser Controlled Spin Dynamics of Ferromagnetic Thin Film from Femtosecond to Nanosecond Timescale Sucheta Mondal and Anjan Barman * Department of Condensed Matter Physics and Material Sciences, S. N. Bose National Centre for Basic Sciences, Block JD, Secto r III, Salt Lake, Kolkata 700 106, India. * ab... | 2018-12-20 | Laser induced modulation of the magnetization dynamics occurring over various
time-scales have been unified here for a Ni80Fe20 thin film excited by
amplified femtosecond laser pulses. The weak correlation between
demagnetization time and pump fluence with substantial enhancement in
remagnetization time is demonstrated... | Laser Controlled Spin Dynamics of Ferromagnetic Thin Film from Femtosecond to Nanosecond Timescale | 1812.08404v1 |
arXiv:1502.00176v1 [math.RA] 31 Jan 2015BASES AND STRUCTURE CONSTANTS OF GENERALIZED SPLINES WITH INTEGER COEFFICIENTS ON CYCLES NEALY BOWDEN, SARAH HAGEN, MELANIE KING, AND STEPHANIE REIN DERS Abstract. Aninteger generalized spline is a set of vertex labels on an edge- labeled graph that satisfy the condition that i... | 2015-01-31 | An integer generalized spline is a set of vertex labels on an edge-labeled
graph that satisfy the condition that if two vertices are joined by an edge,
the vertex labels are congruent modulo the edge label. Foundational work on
these objects comes from Gilbert, Polster, and Tymoczko, who generalize ideas
from geometry/... | Bases and Structure Constants of Generalized Splines with Integer Coefficients on Cycles | 1502.00176v1 |
1 Thermally induced all-optical ferromagnetic resonance in thin YIG films E. Schmoranzerová1*, J. Kimák1, R. Schlitz3, S.T. B. Goennenwein3,6, D. Kriegner2,3, H. Reichlová2,3, Z. Šobáň2, G. Jakob5, E.-J. Guo5, M. Kläui5, M. Münzenberg4, P. Němec1, T. Ostatnický1 1Faculty of Mathematics and Physics, Charles Univer... | 2021-10-31 | All-optical ferromagnetic resonance (AO-FMR) is a powerful tool for local
detection of micromagnetic parameters, such as magnetic anisotropy, Gilbert
damping or spin stiffness. In this work we demonstrate that the AO-FMR method
can be used in thin films of Yttrium Iron Garnet (YIG) if a metallic capping
layer (Au, Pt) ... | Thermally induced all-optical ferromagnetic resonance in thin YIG films | 2111.00586v1 |
arXiv:1505.07248v1 [math.AP] 27 May 2015LOGARITHMIC STABILITY IN DETERMINING A BOUNDARY COEFFICIE NT IN AN IBVP FOR THE WAVE EQUATION KA¨IS AMMARI AND MOURAD CHOULLI Abstract. In [2] we introduced a method combining together an observab ility inequality and a spectral de- composition to get a logarithmic stability es... | 2015-05-27 | In [2] we introduced a method combining together an observability inequality
and a spectral decomposition to get a logarithmic stability estimate for the
inverse problem of determining both the potential and the damping coefficient
in a dissipative wave equation from boundary measurements. The present work
deals with a... | Logarithmic stability in determining a boundary coefficient in an ibvp for the wave equation | 1505.07248v1 |
Magnon-phonon interactions in magnetic insulators Simon Streib,1Nicolas Vidal-Silva,2, 3, 4Ka Shen,5and Gerrit E. W. Bauer1, 5, 6 1Kavli Institute of NanoScience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands 2Departamento de Física, Universidad de Santiago de Chile, Avda. Ecuador 3493, S... | 2019-06-03 | We address the theory of magnon-phonon interactions and compute the
corresponding quasi-particle and transport lifetimes in magnetic insulators
with focus on yttrium iron garnet at intermediate temperatures from anisotropy-
and exchange-mediated magnon-phonon interactions, the latter being derived from
the volume depen... | Magnon-phonon interactions in magnetic insulators | 1906.01042v1 |
arXiv:2108.07676v1 [math.SP] 17 Aug 2021Spectral enclosures for the damped elastic wave equation Biagio Cassano1, Lucrezia Cossetti2and Luca Fanelli3 1Dipartimento di Matematica e Fisica, Universit` a degli Stu di della Campania “Luigi Vanvitelli”, Viale Lincoln 5, 81100 Caserta, Italy; biagio.cassano@unicampania.it ... | 2021-08-17 | In this paper we investigate spectral properties of the damped elastic wave
equation. Deducing a correspondence between the eigenvalue problem of this
model and the one of Lam\'e operators with non self-adjoint perturbations, we
provide quantitative bounds on the location of the point spectrum in terms of
suitable norm... | Spectral enclosures for the damped elastic wave equation | 2108.07676v1 |
The domain wall spin torque-meter I.M. Miron, P.-J. Zermatten, G. Gaudin, S. Au ret, B. Rodmacq, and A. Schuhl SPINTEC, CEA/CNRS/UJF/GINP, INAC, 38054 Grenoble Cedex 9, France (Dated: September 15, 2021) Abstract We report the direct measurement of the non-adiabatic component of the spin-torque in domain walls. Our met... | 2008-10-25 | We report the direct measurement of the non-adiabatic component of the
spin-torque in domain walls. Our method is independent of both the pinning of
the domain wall in the wire as well as of the Gilbert damping parameter. We
demonstrate that the ratio between the non-adiabatic and the adiabatic
components can be as hig... | The domain wall spin torque-meter | 0810.4633v1 |
1 Ultrafast optical control of magnetization in EuO thin films T. Makino1,*, F. Liu2,3, T. Yamasaki4, Y. Kozuka2, K. Ueno5,6, A. Tsukazaki2, T. Fukumura6,7, Y. Kong3, and M. Kawasaki1,2 1 Correlated Electron Research Group (CERG) and Cr oss-Correlated Materials Research Group (CMRG), RIKEN Advanced Science Institu... | 2012-07-28 | All-optical pump-probe detection of magnetization precession has been
performed for ferromagnetic EuO thin films at 10 K. We demonstrate that the
circularly-polarized light can be used to control the magnetization precession
on an ultrafast time scale. This takes place within the 100 fs duration of a
single laser pulse... | Ultrafast optical control of magnetization in EuO thin films | 1207.6686v1 |
1 Investigation of the temp erature-dependence of fe rromagnetic resonance and spin waves in Co 2FeAl 0.5Si0.5 Li Ming Loong1, Jae Hyun Kwon1, Praveen Deorani1, Chris Nga Tung Yu2, Atsufumi Hirohata3,a), and Hyunsoo Yang1,b) 1Department of Electrical and Computer Engine ering, National University of Singapore... | 2014-10-02 | Co2FeAl0.5Si0.5 (CFAS) is a Heusler compound that is of interest for
spintronics applications, due to its high spin polarization and relatively low
Gilbert damping constant. In this study, the behavior of ferromagnetic
resonance as a function of temperature was investigated in CFAS, yielding a
decreasing trend of dampi... | Investigation of the temperature-dependence of ferromagnetic resonance and spin waves in Co2FeAl0.5Si0.5 | 1410.0439v1 |
Ferromagnetic resonance modulation in d-wave superconductor/ferromagnetic insulator bilayer systems Yuya Ominato,1Ai Yamakage,2Takeo Kato,3and Mamoru Matsuo1, 4, 5, 6 1Kavli Institute for Theoretical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China. 2Department of Physics, Nagoya University, N... | 2022-01-16 | We investigate ferromagnetic resonance (FMR) modulation in $d$-wave
superconductor (SC)/ferromagnetic insulator (FI) bilayer systems theoretically.
The modulation of the Gilbert damping in these systems reflects the existence
of nodes in the $d$-wave SC and shows power-law decay characteristics within
the low-temperatu... | Ferromagnetic resonance modulation in $d$-wave superconductor/ferromagnetic insulator bilayer systems | 2201.06060v2 |
1 First and second order magnetic anisotropy and damping of europium iron garnet under high strain Víctor H. Ortiz1, Bassim Arkook1, Junxue Li1, Mohammed Aldosary1, Mason Biggerstaff1, Wei Yuan1, Chad Warren2, Yasuhiro Kodera2, Javier E. Garay2, Igor Barsukov1*, and Jing Shi1* 1Department of Physics and Astr... | 2021-11-30 | Understanding and tailoring static and dynamic properties of magnetic
insulator thin films is important for spintronic device applications. Here, we
grow atomically flat epitaxial europium iron garnet (EuIG) thin films by pulsed
laser deposition on (111)-oriented garnet substrates with a range of lattice
parameters. By... | First and second order magnetic anisotropy and damping of europium iron garnet under high strain | 2111.15142v1 |
1Nonlinear magnetization dyna mics of antiferromagnetic spin resonance induced by inte nse terahertz magnetic field Y Mukai1,2,4,6, H Hirori2,3,4,7, T Yamamoto5, H Kageyama2,5, and K Tanaka1,2,4,8 1 Department of Physics, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan 2 Instit... | 2016-01-23 | We report on the nonlinear magnetization dynamics of a HoFeO3 crystal induced
by a strong terahertz magnetic field resonantly enhanced with a split ring
resonator and measured with magneto-optical Kerr effect microscopy. The
terahertz magnetic field induces a large change (~40%) in the spontaneous
magnetization. The fr... | Nonlinear magnetization dynamics of antiferromagnetic spin resonance induced by intense terahertz magnetic field | 1601.06213v1 |
Spin-Torque-driven Terahertz Auto Oscillations in Non-Collinear Coplanar Antiferromagnets Ankit Shuklaand Shaloo Rakhejay Holonyak Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801 (Dated: January 19, 2022) We theoretically and numerically study the terahertz auto oscill... | 2021-06-16 | We theoretically and numerically study the terahertz auto oscillations in
thin-film metallic non-collinear coplanar antiferromagnets (AFMs), such as
$\mathrm{Mn_{3}Sn}$ and $\mathrm{Mn_{3}Ir}$, under the effect of anti-damping
spin-torque with spin polarization perpendicular to the plane of the film. To
obtain the orde... | Spin-Torque-driven Terahertz Auto Oscillations in Non-Collinear Coplanar Antiferromagnets | 2106.08528v2 |
STABILITY OF THE WAVE EQUATIONS ON A TREE WITH LOCAL KELVIN-VOIGT DAMPING KAIS AMMARI, ZHUANGYI LIU, AND FARHAT SHEL Abstract. In this paper we study the stability problem of a tree of elastic strings with local Kelvin-Voigt damping on some of the edges. Under the compatibility condition of displacement and strain and ... | 2018-03-20 | In this paper we study the stability problem of a tree of elastic strings
with local Kelvin-Voigt damping on some of the edges. Under the compatibility
condition of displacement and strain and continuity condition of damping
coefficients at the vertices of the tree, exponential/polynomial stability are
proved. | Stability of the wave equations on a tree with local Kelvin-Voigt damping | 1803.07280v1 |
1 Comparison of micromagnetic parameters of ferromagnetic semiconductors (Ga,Mn)(As,P) and (Ga,Mn)As N. Tesařová1, D. Butkovi čová1, R. P. Campion2, A.W. Rushforth2, K. W. Edmonds, P. Wadley2, B. L. Gallagher2, E. Schmoranzerová,1 F. Trojánek1, P. Malý1, P. Motloch4, V. Novák3, T. Jungwirth3, 2, and P. N ěme... | 2014-05-19 | We report on the determination of micromagnetic parameters of epilayers of
the ferromagnetic semiconductor (Ga,Mn)As, which has easy axis in the sample
plane, and (Ga,Mn)(As,P) which has easy axis perpendicular to the sample plane.
We use an optical analog of ferromagnetic resonance where the
laser-pulse-induced preces... | Comparison of micromagnetic parameters of ferromagnetic semiconductors (Ga,Mn)(As,P) and (Ga,Mn)As | 1405.4677v1 |
Microscopic analysis of sound attenuation in low-temperature amorphous solids reveals quantitative importance of non-ane e ects Grzegorz Szamel1,a)and Elijah Flenner1 Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, USA (Dated: 4 April 2022) Sound attenuation in low temperature amorpho... | 2021-07-29 | Sound attenuation in low temperature amorphous solids originates from their
disordered structure. However, its detailed mechanism is still being debated.
Here we analyze sound attenuation starting directly from the microscopic
equations of motion. We derive an exact expression for the zero-temperature
sound damping coe... | Microscopic analysis of sound attenuation in low-temperature amorphous solids reveals quantitative importance of non-affine effects | 2107.14254v2 |
arXiv:2205.06399v1 [cond-mat.mes-hall] 13 May 2022Precession dynamics of a small magnet with non-Markovian da mping: Theoretical proposal for an experiment to determine the correlation tim e,✩✩ Hiroshi Imamura, Hiroko Arai, Rie Matsumoto, Toshiki Yamaj i, Hiroshi Tsukahara✩ National Institute of Advanced Industrial S... | 2022-05-13 | Recent advances in experimental techniques have made it possible to
manipulate and measure the magnetization dynamics on the femtosecond time scale
which is the same order as the correlation time of the bath degrees of freedom.
In the equations of motion of magnetization, the correlation of the bath is
represented by t... | Precession dynamics of a small magnet with non-Markovian damping: Theoretical proposal for an experiment to determine the correlation time | 2205.06399v1 |
arXiv:1211.2900v1 [math.AP] 13 Nov 2012CRITICAL EXPONENT FOR THE SEMILINEAR WAVE EQUATION WITH SCALE INVARIANT DAMPING YUTA WAKASUGI Abstract. In this paper we consider the critical exponent problem for t he semilinear damped wave equation with time-dependent coeffic ients. We treat the scale invariant cases. In this c... | 2012-11-13 | In this paper we consider the critical exponent problem for the semilinear
damped wave equation with time-dependent coefficients. We treat the scale
invariant cases. In this case the asymptotic behavior of the solution is very
delicate and the size of coefficient plays an essential role. We shall prove
that if the powe... | Critical exponent for the semilinear wave equation with scale invariant damping | 1211.2900v1 |
arXiv:1605.04543v1 [cond-mat.mtrl-sci] 15 May 2016Propagation of Thermally Induced Magnonic Spin Currents Ulrike Ritzmann, Denise Hinzke, and Ulrich Nowak Fachbereich Physik, Universit¨ at Konstanz, D-78457 Konst anz, Germany (Dated: 19.12.2013) The propagation of magnons in temperature gradients is inve stigated wit... | 2016-05-15 | The propagation of magnons in temperature gradients is investigated within
the framework of an atomistic spin model with the stochastic
Landau-Lifshitz-Gilbert equation as underlying equation of motion. We analyze
the magnon accumulation, the magnon temperature profile as well as the
propagation length of the excited m... | Propagation of Thermally Induced Magnonic Spin Currents | 1605.04543v1 |
Anisotropic Magnetization Relaxa tion in Ferromagnetic GaMnAs Thin Films Kh.Khazen, H.J.von Bardeleben, M.Cubukcu, J.L.Cantin Institut des Nanosciences de Paris, Université Paris 6, UMR 7588 au CNRS 140, rue de Lourmel, 75015 Paris, France V.Novak, K.Olejnik, M.Cukr Institut of Physics, Academy of Sciences,... | 2008-09-26 | The magnetic properties of annealed, epitaxial Ga0.93Mn0.07As layers under
tensile and compressive stress have been investigated by X-band (9GHz) and
Q-band (35GHz) ferromagnetic resonance (FMR) spectroscopy. From the analysis of
the linewidths of the uniform mode spectra the FMR Gilbert damping factor
"alpha" has been... | Damping and magnetic anisotropy of ferromagnetic GaMnAs thin films | 0809.4644v2 |
Gilbert damping in two-dimensional metallic anti-ferromagnets R. J. Sokolewicz,1, 2M. Baglai,3I. A. Ado,1M. I. Katsnelson,1and M. Titov1 1Radboud University, Institute for Molecules and Materials, 6525 AJ Nijmegen, the Netherlands 2Qblox, Delftechpark 22, 2628 XH Delft, the Netherlands 3Department of Physics and Astron... | 2023-11-27 | A finite spin life-time of conduction electrons may dominate Gilbert damping
of two-dimensional metallic anti-ferromagnets or anti-ferromagnet/metal
heterostructures. We investigate the Gilbert damping tensor for a typical
low-energy model of a metallic anti-ferromagnet system with honeycomb magnetic
lattice and Rashba... | Gilbert damping in two-dimensional metallic anti-ferromagnets | 2311.16268v2 |
arXiv:2203.01632v1 [math.AP] 3 Mar 2022STABILITY RESULTS OF LOCALLY COUPLED WAVE EQUATIONS WITH LO CAL KELVIN-VOIGT DAMPING: CASES WHEN THE SUPPORTS OF DAMPING AN D COUPLING COEFFICIENTS ARE DISJOINT MOHAMMAD AKIL1, HAIDAR BADAWI1, AND SERGE NICAISE1 Abstract. In this paper, we study the direct/indirect stability of ... | 2022-03-03 | In this paper, we study the direct/indirect stability of locally coupled wave
equations with local Kelvin-Voigt dampings/damping and by assuming that the
supports of the dampings and the coupling coefficients are disjoint. First, we
prove the well-posedness, strong stability, and polynomial stability for some
one dimen... | Stability results of locally coupled wave equations with local Kelvin-Voigt damping: Cases when the supports of damping and coupling coefficients are disjoint | 2203.01632v1 |
arXiv:2009.05372v1 [math.AP] 10 Sep 2020Blow – up results for semilinear damped wave equations in Einstein – de Sitter spacetime Alessandro Palmieri Abstract We prove by using an iteration argument some blow-up results for a semilinear damped wave equation in generalized Einstein-de Sitter spacetime with a time-de pe... | 2020-09-10 | We prove by using an iteration argument some blow-up results for a semilinear
damped wave equation in generalized Einstein-de Sitter spacetime with a
time-dependent coefficient for the damping term and power nonlinearity. Then,
we conjecture an expression for the critical exponent due to the main blow-up
results, which... | Blow-up results for semilinear damped wave equations in Einstein-de Sitter spacetime | 2009.05372v1 |
arXiv:1609.01063v2 [math.AP] 23 Nov 2016REMARKS ON AN ELLIPTIC PROBLEM ARISING IN WEIGHTED ENERGY ESTIMATES FOR WAVE EQUATIONS WITH SPACE-DEPENDENT DAMPING TERM IN AN EXTERIOR DOMAIN MOTOHIRO SOBAJIMA AND YUTA WAKASUGI Abstract. This paper is concerned with weighted energy estimates and d if- fusion phenomena for the... | 2016-09-05 | This paper is concerned with weighted energy estimates and diffusion
phenomena for the initial-boundary problem of the wave equation with
space-dependent damping term in an exterior domain. In this analysis, an
elliptic problem was introduced by Todorova and Yordanov. This attempt was
quite useful when the coefficient ... | Remarks on an elliptic problem arising in weighted energy estimates for wave equations with space-dependent damping term in an exterior domain | 1609.01063v2 |
1 Magnetic Damping in Epitaxial Fe Alloyed with Vanadium and Aluminum David A. Smith1, Anish Rai2,3, Youngmin Lim1, Timothy Hartnett4, Arjun Sapkota2,3, Abhishek Srivastava2,3, Claudia Mewes2,3, Zijian Jiang1, Michael Clavel5, Mantu K. Hudait5, Dwight D. Viehland6, Jean J. Heremans1, Prasanna V. Balachandran4,7, ... | 2020-04-09 | To develop low-moment, low-damping metallic ferromagnets for power-efficient
spintronic devices, it is crucial to understand how magnetic relaxation is
impacted by the addition of nonmagnetic elements. Here, we compare magnetic
relaxation in epitaxial Fe films alloyed with light nonmagnetic elements of V
and Al. FeV al... | Magnetic Damping in Epitaxial Fe Alloyed with Vanadium and Aluminum | 2004.04840v3 |
Magnetic damping anisotropy in the two-dimensional van der Waals material Fe3GeTe 2from rst principles Pengtao Yang, Ruixi Liu, Zhe Yuan, and Yi Liu The Center for Advanced Quantum Studies and Department of Physics, Beijing Normal University, 100875 Beijing, China (Dated: October 18, 2022) Magnetization relaxation in... | 2022-10-16 | Magnetization relaxation in the two-dimensional itinerant ferromagnetic van
der Waals material Fe$_3$GeTe$_2$, below the Curie temperature, is
fundamentally important for applications to low-dimensional spintronics
devices. We use first-principles scattering theory to calculate the
temperature-dependent Gilbert damping... | Magnetic damping anisotropy in the two-dimensional van der Waals material Fe$_3$GeTe$_2$ from first principles | 2210.08429v1 |
arXiv:1802.02415v1 [cond-mat.mes-hall] 7 Feb 2018Breaking the current density threshold in spin-orbit-torq ue magnetic random access memory Yin Zhang,1,2H. Y. Yuan,3,∗X. S. Wang,4,1and X. R. Wang1,2,† 1Physics Department, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong 2HKUST S... | 2018-02-07 | Spin-orbit-torque magnetic random access memory (SOT-MRAM) is a promising
technology for the next generation of data storage devices. The main bottleneck
of this technology is the high reversal current density threshold. This
outstanding problem of SOT-MRAM is now solved by using a current density of
constant magnitude... | Breaking the current density threshold in spin-orbit-torque magnetic random access memory | 1802.02415v1 |
Ferromagnetic resonance study of Co/Pd/Co/Ni multilayers with perpendicular anisotropy irradiated with Helium ions J-M. L. Beaujour, A. D. Kent,1D. Ravelosona,2and I. Tudosa and E. E. Fullerton3 1Department of Physics, New York University, 4 Washington Place, New York, NY 10003, USA 2Institut d'Electronique Fondamental... | 2010-10-01 | We present a ferromagnetic resonance (FMR) study of the effect of Helium ion
irradiation on the magnetic anisotropy, the linewidth and the Gilbert damping
of a Co/Ni multilayer coupled to Co/Pd bilayers. The perpendicular magnetic
anisotropy decreases linearly with He ion fluence, leading to a transition to
in-plane ma... | Ferromagnetic resonance study of Co/Pd/Co/Ni multilayers with perpendicular anisotropy irradiated with Helium ions | 1010.0268v2 |
Green’s function formalism for spin transport in metal-insulator-metal heterostructures Jiansen Zheng,1Scott Bender,1Jogundas Armaitis,2Roberto E. Troncoso,3,4and Rembert A. Duine1,5 1Institute for Theoretical Physics and Center for Extreme Matter and Emergent Phenomena, Utrecht University, Leuvenlaan 4, 3584 CE Utrech... | 2017-09-12 | We develop a Green's function formalism for spin transport through
heterostructures that contain metallic leads and insulating ferromagnets. While
this formalism in principle allows for the inclusion of various magnonic
interactions, we focus on Gilbert damping. As an application, we consider
ballistic spin transport b... | Green's function formalism for spin transport in metal-insulator-metal heterostructures | 1709.03775v1 |
2011-01-28 | The entanglement between two atoms in a damping Jaynes-Cummings model is
investigated with different decay coefficients of the atoms from the upper
level to other levels under detuning between the atomic frequency and the
quantized light field frequency. The results indicate that the larger the decay
coefficient is, th... | Entanglement between two atoms in a damping Jaynes-Cummings model | 1101.5522v1 | |
Dynamical depinning of chiral domain walls Simone Moretti,Michele Voto, and Eduardo Martinez Department of Applied Physics, University of Salamanca, Plaza de los Caidos, Salamanca 37008, Spain. The domain wall depinning eld represents the minimum magnetic eld needed to move a domain wall, typically pinned by samples... | 2017-05-21 | The domain wall depinning field represents the minimum magnetic field needed
to move a domain wall, typically pinned by samples' disorder or patterned
constrictions. Conventionally, such field is considered independent on the
Gilbert damping since it is assumed to be the field at which the Zeeman energy
equals the pinn... | Dynamical depinning of chiral domain walls | 1705.07489v2 |
arXiv:1409.2340v1 [math.AP] 8 Sep 2014Self-similar solutions of the one-dimensional Landau–Lifshitz–Gilbert equation Susana Gutiérrez1and André de Laire2 Abstract We consider the one-dimensional Landau–Lifshitz–Gilbert (LLG) equation, a model des- cribing the dynamics for the spin in ferromagnetic material s. Our mai... | 2014-09-08 | We consider the one-dimensional Landau-Lifshitz-Gilbert (LLG) equation, a
model describing the dynamics for the spin in ferromagnetic materials. Our main
aim is the analytical study of the bi-parametric family of self-similar
solutions of this model. In the presence of damping, our construction provides
a family of glo... | Self-similar solutions of the one-dimensional Landau-Lifshitz-Gilbert equation | 1409.2340v1 |
arXiv:1104.1625v1 [cond-mat.mes-hall] 8 Apr 2011Magnetization Dissipation in Ferromagnets from Scatterin g Theory Arne Brataas∗ Department of Physics, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway Yaroslav Tserkovnyak Department of Physics and Astronomy, University of Califor nia, Los Ange... | 2011-04-08 | The magnetization dynamics of ferromagnets are often formulated in terms of
the Landau-Lifshitz-Gilbert (LLG) equation. The reactive part of this equation
describes the response of the magnetization in terms of effective fields,
whereas the dissipative part is parameterized by the Gilbert damping tensor. We
formulate a... | Magnetization Dissipation in Ferromagnets from Scattering Theory | 1104.1625v1 |
arXiv:1409.6900v2 [cond-mat.mes-hall] 17 Apr 2015Dissipationless Multiferroic Magnonics Wei Chen1and Manfred Sigrist2 1Max-Planck-Institut f ¨ur Festk¨orperforschung, Heisenbergstrasse 1, D-70569 Stuttgart, G ermany 2Theoretische Physik, ETH-Z¨ urich, CH-8093 Z¨ urich, Switz erland (Dated: October 15, 2018) We propos... | 2014-09-24 | We propose that the magnetoelectric effect in multiferroic insulators with
coplanar antiferromagnetic spiral order, such as BiFeO$_{3}$, enables
electrically controlled dissipationless magnonics. Applying an oscillating
electric field in these materials with frequency as low as household frequency
can activate Goldston... | Dissipationless Multiferroic Magnonics | 1409.6900v2 |
Consistent microscopic analysis of spin pumping e ects Gen Tatara RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan Shigemi Mizukami WPI - Advanced Insitute for Materials Research, Tohoku University Katahira 2-1-1, Sendai, Japan (Dated: October 20, 2018) Abstract We present a ... | 2017-06-05 | We present a consistent microscopic study of spin pumping effects for both
metallic and insulating ferromagnets. As for metallic case, we present a simple
quantum mechanical picture of the effect as due to the electron spin flip as a
result of a nonadiabatic (off-diagonal) spin gauge field. The effect of
interface spin... | Consistent microscopic analysis of spin pumping effects | 1706.01185v1 |
Control of magnon-photon coupling by spin torque Anish Rai1,and M. Benjamin Jung
eisch1,y 1Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, United States (Dated: February 20, 2023) We demonstrate the in
uence of damping and eld-like torques in the magnon-photon coupling process by ... | 2023-02-17 | We demonstrate the influence of damping and field-like torques in the
magnon-photon coupling process by classically integrating the generalized
Landau-Lifshitz-Gilbert equation with RLC equation in which a phase correlation
between dynamic magnetization and microwave current through combined Amp\`ere
and Faraday effect... | Control of magnon-photon coupling by spin torque | 2302.08910v1 |
A reduced model for precessional switching of thin- lm nanomagnets under the in
uence of spin-torque Ross G. Lund1, Gabriel D. Chaves-O'Flynn2, Andrew D. Kent2, Cyrill B. Muratov1 1Department of Mathematical Sciences, New Jersey Institute of Technology , University Heights, Newark, NJ 07102, USA 2Department of Physics,... | 2016-05-27 | We study the magnetization dynamics of thin-film magnetic elements with
in-plane magnetization subject to a spin-current flowing perpendicular to the
film plane. We derive a reduced partial differential equation for the in-plane
magnetization angle in a weakly damped regime. We then apply this model to
study the experi... | A reduced model for precessional switching of thin-film nanomagnets under the influence of spin-torque | 1605.08698v1 |
arXiv:1503.01478v2 [cond-mat.mes-hall] 1 Aug 2015Critical current destabilizing perpendicular magnetizat ion by the spin Hall effect Tomohiro Taniguchi1, Seiji Mitani2, and Masamitsu Hayashi2 1National Institute of Advanced Industrial Science and Tech nology (AIST), Spintronics Research Center, Tsukuba 305-8568, Japan... | 2015-03-04 | The critical current needed to destabilize the magnetization of a
perpendicular ferromagnet via the spin Hall effect is studied. Both the
dampinglike and fieldlike torques associated with the spin current generated by
the spin Hall effect is included in the Landau-Lifshitz-Gilbert equation to
model the system. In the a... | Critical current destabilizing perpendicular magnetization by the spin Hall effect | 1503.01478v2 |
Nearly isotropic spin-pumping related Gilbert damping in Pt/Ni 81Fe19/Pt W. Cao,1,L. Yang,1S. Au ret,2and W.E. Bailey1, 2,y 1Materials Science and Engineering, Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA 2SPINTEC, Universit eGrenoble Alpes/CEA/CNRS, F-3800... | 2018-10-24 | A recent theory by Chen and Zhang [Phys. Rev. Lett. 114, 126602 (2015)]
predicts strongly anisotropic damping due to interfacial spin-orbit coupling in
ultrathin magnetic films. Interfacial Gilbert-type relaxation, due to the spin
pumping effect, is predicted to be significantly larger for magnetization
oriented parall... | Nearly isotropic spin-pumping related Gilbert damping in Pt/Ni$_{81}$Fe$_{19}$/Pt | 1810.10595v4 |
DAMPED INFINITE ENERGY SOLUTIONS OF THE 3D EULER AND BOUSSINESQ EQUATIONS WILLIAM CHEN AND ALEJANDRO SARRIA Abstract. We revisit a family of in nite-energy solutions of the 3D incompressible Euler equations proposed by Gibbon et al. [9] and shown to blowup in nite time by Constantin [6]. By adding a damping term to th... | 2016-05-29 | We revisit a family of infinite-energy solutions of the 3D incompressible
Euler equations proposed by Gibbon et al. [9] and shown to blowup in finite
time by Constantin [6]. By adding a damping term to the momentum equation we
examine how the damping coefficient can arrest this blowup. Further, we show
that similar inf... | Damped Infinite Energy Solutions of the 3D Euler and Boussinesq Equations | 1605.08965v3 |
arXiv:1504.06042v1 [cond-mat.mes-hall] 23 Apr 2015Magnetizationdamping innoncollinearspinvalveswithant iferromagnetic interlayer couplings Takahiro Chiba1, Gerrit E. W. Bauer1,2,3, and Saburo Takahashi1 1Institute for Materials Research, Tohoku University, Send ai, Miyagi 980-8577, Japan 2WPI-AIMR, Tohoku University,... | 2015-04-23 | We study the magnetic damping in the simplest of synthetic antiferromagnets,
i.e. antiferromagnetically exchange-coupled spin valves in which applied
magnetic fields tune the magnetic configuration to become noncollinear. We
formulate the dynamic exchange of spin currents in a noncollinear texture based
on the spindiff... | Magnetization damping in noncollinear spin valves with antiferromagnetic interlayer couplings | 1504.06042v1 |
arXiv:2109.12071v1 [cond-mat.mtrl-sci] 24 Sep 2021Damping in yttrium iron garnet film with an interface Ravinder Kumar,1,2,∗B. Samantaray,1Shubhankar Das,3Kishori Lal,1D. Samal,2,4and Z. Hossain1,5,† 1Department of Physics, Indian Institute of Technology, Kan pur 208016, India. 2Institute of Physics, Bhubaneswar 75100... | 2021-09-24 | We report strong damping enhancement in a 200 nm thick yttrium iron garnet
(YIG) film due to spin inhomogeneity at the interface. The growth-induced thin
interfacial gadolinium iron garnet (GdIG) layer antiferromagnetically (AFM)
exchange couples with the rest of the YIG layer. The out-of-plane angular
variation of fer... | Damping in yttrium iron garnet film with an interface | 2109.12071v1 |
Atomistic spin dynamic method with both damping and moment of inertia e ects included from rst principles S. Bhattacharjee, L. Nordstr om, and J. Fransson Department of Physics and Astronomy, Box 516, 75120, Uppsala University, Uppsala, Sweden (Dated: October 28, 2018) We consider spin dynamics for implementation in ... | 2011-10-15 | We consider spin dynamics for implementation in an atomistic framework and we
address the feasibility of capturing processes in the femtosecond regime by
inclusion of moment of inertia. In the spirit of an {\it s-d} -like interaction
between the magnetization and electron spin, we derive a generalized equation
of motio... | Atomistic spin dynamic method with both damping and moment of inertia effects included from first principles | 1110.3387v2 |
arXiv:0708.0463v1 [cond-mat.other] 3 Aug 2007Strong spin-orbit induced Gilbert damping and g-shift in ir on-platinum nanoparticles J¨ urgen K¨ otzler, Detlef G¨ orlitz, and Frank Wiekhorst Institut f¨ ur Angewandte Physik und Zentrum f¨ ur Mikrostruk turforschung, Universit¨ at Hamburg, Jungiusstrasse 11, D-20355 Ham... | 2007-08-03 | The shape of ferromagnetic resonance spectra of highly dispersed, chemically
disordered Fe_{0.2}Pt_{0.8} nanospheres is perfectly described by the solution
of the Landau-Lifshitz-Gilbert (LLG) equation excluding effects by crystalline
anisotropy and superparamagnetic fluctuations. Upon decreasing temperature, the
LLG d... | Strong spin-orbit induced Gilbert damping and g-shift in iron-platinum nanoparticles | 0708.0463v1 |
arXiv:2002.03418v2 [math.AP] 9 Jan 2021Noname manuscript No. (will be inserted by the editor) Fujita modified exponent for scale invariant damped semiline ar wave equations. Felisia Angela Chiarello ·Giovanni Girardi · Sandra Lucente Received: date / Accepted: date Abstract The aim of this paper is to prove a blow up ... | 2020-02-09 | The aim of this paper is to prove a blow up result of the solution for a
semilinear scale invariant damped wave equation under a suitable decay
condition on radial initial data. The admissible range for the power of the
nonlinear term depends both on the damping coefficient and on the pointwise
decay order of the initi... | Fujita modified exponent for scale invariant damped semilinear wave equations | 2002.03418v2 |
Comparative study of methodologies to compute the intrinsic Gilbert damping: interrelations, validity and physical consequences Filipe S. M. Guimar~ aes,J. R. Suckert, Jonathan Chico, Juba Bouaziz, Manuel dos Santos Dias, and Samir Lounis Peter Gr unberg Institut and Institute for Advanced Simulation, Forschungszentru... | 2018-07-31 | Relaxation effects are of primary importance in the description of magnetic
excitations, leading to a myriad of methods addressing the phenomenological
damping parameters. In this work, we consider several well-established forms of
calculating the intrinsic Gilbert damping within a unified theoretical
framework, mappin... | Comparative study of methodologies to compute the intrinsic Gilbert damping: interrelations, validity and physical consequences | 1807.11808v3 |
arXiv:2205.14166v2 [hep-ph] 27 Sep 2022Scalar field damping at high temperatures Dietrich B¨ odeker1, Jan Nienaber2 Fakult¨ at f¨ ur Physik, Universit¨ at Bielefeld, 33615 Biel efeld, Germany Abstract The motion of a scalar field that interacts with a hot plasma, l ike the inflaton during reheating, is damped, which is ... | 2022-05-27 | The motion of a scalar field that interacts with a hot plasma, like the
inflaton during reheating, is damped, which is a dissipative process. At high
temperatures the damping can be described by a local term in the effective
equation of motion. The damping coefficient is sensitive to multiple
scattering. In the loop ex... | Scalar field damping at high temperatures | 2205.14166v2 |
Coupled Spin-Light dynamics in Cavity Optomagnonics Silvia Viola Kusminskiy,1Hong X. Tang,2and Florian Marquardt1, 3 1Institute for Theoretical Physics, University Erlangen-Nürnberg, Staudtstraße 7, 91058 Erlangen, Germany 2Department of Electrical Engineering, Yale University, New Haven, Connecticut 06511, USA 3Max Pl... | 2016-04-24 | Experiments during the past two years have shown strong resonant
photon-magnon coupling in microwave cavities, while coupling in the optical
regime was demonstrated very recently for the first time. Unlike with
microwaves, the coupling in optical cavities is parametric, akin to
optomechanical systems. This line of rese... | Coupled Spin-Light dynamics in Cavity Optomagnonics | 1604.07053v3 |
arXiv:0807.2901v1 [cond-mat.str-el] 18 Jul 2008Current-induced dynamics of spiral magnet Kohei Goto,1,∗Hosho Katsura,1,†and Naoto Nagaosa1,2,‡ 1Department of Applied Physics, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan 2Cross-Correlated Materials Research Group (CMRG), ASI, RI KEN, Wako 35... | 2008-07-18 | We study the dynamics of the spiral magnet under the charge current by
solving the Landau-Lifshitz-Gilbert equation numerically. In the steady state,
the current ${\vec j}$ induces (i) the parallel shift of the spiral pattern
with velocity $v=(\beta/\alpha)j$ ($\alpha$, $\beta$: the Gilbert damping
coefficients), (ii) ... | Current-induced dynamics of spiral magnet | 0807.2901v1 |
Effective damping enhancement in noncollinear spin structures Levente Rózsa,1,∗Julian Hagemeister,1Elena Y. Vedmedenko,1and Roland Wiesendanger1 1Department of Physics, University of Hamburg, D-20355 Hamburg, Germany (Dated: August 29, 2021) Damping mechanisms in magnetic systems determine the lifetime, diffusion and tra... | 2018-05-04 | Damping mechanisms in magnetic systems determine the lifetime, diffusion and
transport properties of magnons, domain walls, magnetic vortices, and
skyrmions. Based on the phenomenological Landau-Lifshitz-Gilbert equation, here
the effective damping parameter in noncollinear magnetic systems is determined
describing the... | Effective damping enhancement in noncollinear spin structures | 1805.01815v2 |
Optimal damping of vibrating systems: dependence on initial conditions K. Lelasa,∗, I. Nakićb aFaculty of Textile Technology, University of Zagreb, Croatia bDepartment of Mathematics, Faculty of Science, University of Zagreb, Croatia Abstract Common criteria used for measuring performance of vibrating systems have one ... | 2023-07-05 | Common criteria used for measuring performance of vibrating systems have one
thing in common: they do not depend on initial conditions of the system. In
some cases it is assumed that the system has zero initial conditions, or some
kind of averaging is used to get rid of initial conditions. The aim of this
paper is to i... | Optimal damping of vibrating systems: dependence on initial conditions | 2307.02352v2 |
Sliding Dynamics of Current-Driven Skyrmion Crystal and Helix in Chiral Magnets Ying-Ming Xie,1Yizhou Liu,1and Naoto Nagaosa1,∗ 1RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan (Dated: December 14, 2023) The skyrmion crystal (SkX) and helix (HL) phases, present in typical chiral magnets, ... | 2023-12-12 | The skyrmion crystal (SkX) and helix (HL) phases, present in typical chiral
magnets, can each be considered as forms of density waves but with distinct
topologies. The SkX exhibits gyrodynamics analogous to electrons under a
magnetic field, while the HL state resembles topological trivial spin density
waves. However, u... | Sliding Dynamics of Current-Driven Skyrmion Crystal and Helix in Chiral Magnets | 2312.07116v2 |
arXiv:1308.3787v1 [cond-mat.mes-hall] 17 Aug 2013Thickness and power dependence of the spin-pumping effect in Y3Fe5O12/Pt heterostructures measured by the inverse spin Hall effect M. B. Jungfleisch,1,∗A. V. Chumak,1A. Kehlberger,2V. Lauer,1 D. H. Kim,3M. C. Onbasli,3C. A. Ross,3M. Kl¨ aui,2and B. Hillebrands1 1Fachberei... | 2013-08-17 | The dependence of the spin-pumping effect on the yttrium iron garnet
(Y3Fe5O12, YIG) thickness detected by the inverse spin Hall effect (ISHE) has
been investigated quantitatively. Due to the spin-pumping effect driven by the
magnetization precession in the ferrimagnetic insulator YIG film a
spin-polarized electron cur... | Thickness and power dependence of the spin-pumping effect in Y3Fe5O12/Pt heterostructures measured by the inverse spin Hall effect | 1308.3787v1 |
arXiv:1301.2114v1 [cond-mat.other] 10 Jan 2013APS/123-QED First-principles calculation of the Gilbert damping param eter via the linear response formalism with application to magnetic transition-metals and alloys S. Mankovsky1, D. K¨ odderitzsch1, G. Woltersdorf2, and H. Ebert1 1University of Munich, Department of Ch... | 2013-01-10 | A method for the calculations of the Gilbert damping parameter $\alpha$ is
presented, which based on the linear response formalism, has been implemented
within the fully relativistic Korringa-Kohn-Rostoker band structure method in
combination with the coherent potential approximation alloy theory. To account
for therma... | First-principles calculation of the Gilbert damping parameter via the linear response formalism with application to magnetic transition-metals and alloys | 1301.2114v1 |
Discovery and regulation of chiral magnetic solitons: Exact solution from Landau-Lifshitz-Gilbert equation Xin-Wei Jin,1, 2Zhan-Ying Yang,1, 2,∗Zhimin Liao,3Guangyin Jing,1, †and Wen-Li Yang2, 4 1School of Physics, Northwest University, Xi’an 710127, China 2Peng Huanwu Center for Fundamental Theory, Xi’an 710127, China... | 2023-08-16 | The Landau-Lifshitz-Gilbert (LLG) equation has emerged as a fundamental and
indispensable framework within the realm of magnetism. However, solving the LLG
equation, encompassing full nonlinearity amidst intricate complexities,
presents formidable challenges. In this context, we develop a precise mapping
through geomet... | Discovery and regulation of chiral magnetic solitons: Exact solution from Landau-Lifshitz-Gilbert equation | 2308.08331v1 |
Magnetoelastic Gilbert damping in magnetostrictive Fe 0.7Ga 0.3thin films W. K. Peria,1X. Wang,2H. Yu,2S. Lee,2, 3I. Takeuchi,2and P. A. Crowell1,∗ 1School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA 2Department of Materials Science and Engineering, University of Maryland, Colleg... | 2021-03-11 | We report an enhanced magnetoelastic contribution to the Gilbert damping in
highly magnetostrictive Fe$_{0.7}$Ga$_{0.3}$ thin films. This effect is
mitigated for perpendicular-to-plane fields, leading to a large anisotropy of
the Gilbert damping in all of the films (up to a factor of 10 at room
temperature). These clai... | Magnetoelastic Gilbert damping in magnetostrictive Fe$_{0.7}$Ga$_{0.3}$ thin films | 2103.07008v1 |
1 Predicting New Iron Garnet Thin Film s with Perpendicular Magnetic Anisotropy Saeedeh Mokarian Zanjani1, Mehmet C. Onbaşlı1,2,* 1 Graduate School of Materials Science and Engineering, Koç University , Sarıyer, 34450 Istanbul, Turkey . 2 Department of Electrical and Electronics Engineering, Koç University, Sa... | 2019-05-30 | Perpendicular magnetic anisotropy (PMA) is a necessary condition for many
spintronic applications like spin-orbit torques switching, logic and memory
devices. An important class of magnetic insulators with low Gilbert damping at
room temperature are iron garnets, which only have a few PMA types such as
terbium and sama... | Predicting New Iron Garnet Thin Films with Perpendicular Magnetic Anisotropy | 1905.13042v1 |
The fractional Landau-Lifshitz-Gilbert equation R.C. Verstraten1, T. Ludwig1, R.A. Duine1,2, C. Morais Smith1 1Institute for Theoretical Physics, Utrecht University, Princetonplein 5, 3584CC Utrecht, The Netherlands 2Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The... | 2022-11-23 | The dynamics of a magnetic moment or spin are of high interest to
applications in technology. Dissipation in these systems is therefore of
importance for improvement of efficiency of devices, such as the ones proposed
in spintronics. A large spin in a magnetic field is widely assumed to be
described by the Landau-Lifsh... | The fractional Landau-Lifshitz-Gilbert equation | 2211.12889v1 |
Magnetic field gradient driven dynamics of isolated skyrmions and antiskyrmions in frustrated magnets J. J. Liang1, J. H. Yu1, J. C hen1, M. H. Qin1,*, M. Zeng1, X. B. Lu1, X. S. Gao1, and J. –M. Liu2,† 1Institute for Advanced Materials , South China Academy of Advanced Optoelectronics and Guangdong Prov... | 2017-12-10 | The study of skyrmion/antiskyrmion motion in magnetic materials is very
important in particular for the spintronics applications. In this work, we
study the dynamics of isolated skyrmions and antiskyrmions in frustrated
magnets driven by magnetic field gradient, using the Landau-Lifshitz-Gilbert
simulations on the frus... | Magnetic field gradient driven dynamics of isolated skyrmions and antiskyrmions in frustrated magnets | 1712.03550v1 |
Spin Pumping in Ion-beam Sputtered Co2FeAl/Mo Bilayer s: Interfacial Gilbert Damping Sajid Husain, Vineet Barwal, and Sujeet Chaudhary* Thin Film Laboratory, Department of Physics, Indian Institute of Technology Delhi, New Delhi 110016 (INDIA) Ankit Kumar, Nilamani Behera, Serkan Akansel, and Peter Svedlindh Å... | 2017-11-20 | The spin pumping mechanism and associated interfacial Gilbert damping are
demonstrated in ion-beam sputtered Co2FeAl (CFA) /Mo bilayer thin films
employing ferromagnetic resonance spectroscopy. The dependence of the net spin
current transportation on Mo layer thickness, 0 to 10 nm, and the enhancement
of the net effect... | Spin Pumping in Ion-beam Sputtered Co_{2}FeAl/Mo Bilayers:Interfacial Gilbert Damping | 1711.07455v1 |
arXiv:1703.03485v2 [math.AP] 10 Apr 2017LONG-TIME DYNAMICS OF THE STRONGLY DAMPED SEMILINEAR PLATE EQUATION IN Rn AZER KHANMAMEDOV AND SEMA YAYLA Abstract. We investigate the initial-value problem for the semilinea r plate equation containing local- ized strong damping, localized weak damping and nonlocal no nlineari... | 2017-03-09 | We investigate the initial-value problem for the semilinear plate equation
containing localized strong damping, localized weak damping and nonlocal
nonlinearity. We prove that if nonnegative damping coefficients are strictly
positive almost everywhere in the exterior of some ball and the sum of these
coefficients is po... | Long-time dynamics of the strongly damped semilinear plate equation in $\mathbb{R}^{n}$ | 1703.03485v2 |
1 Magnetic Skyrmion Transport in a Nanotrack With Spatially Varying Damping and Non-adiabatic Torque Xichao Zhang1,2, Jing Xia1, G. P. Zhao3, Xiaoxi Liu4, and Yan Zhou1 1School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen 518172, China 2School of Electronic Science and Engineering, Nanjing ... | 2016-07-18 | Reliable transport of magnetic skyrmions is required for any future
skyrmion-based information processing devices. Here we present a micromagnetic
study of the in-plane current-driven motion of a skyrmion in a ferromagnetic
nanotrack with spatially sinusoidally varying Gilbert damping and/or
non-adiabatic spin-transfer... | Magnetic Skyrmion Transport in a Nanotrack With Spatially Varying Damping and Non-adiabatic Torque | 1607.04983v3 |
Structural scale q derivative and the LLG-Equation in a scenario with fractionality J.Weberszpil Universidade Federal Rural do Rio de Janeiro, UFRRJ-IM/DTL and Av. Governador Roberto Silveira s/n- Nova Iguaçú, Rio de Janeiro, Brasil, 695014. J. A. Helayël-Netoy Centro Brasileiro de Pesquisas Físicas-CBPF-Rua Dr Xavier... | 2017-01-27 | In the present contribution, we study the Landau-Lifshitz-Gilbert equation
with two versions of structural derivatives recently proposed: the scale
$q-$derivative in the non-extensive statistical mechanics and the axiomatic
metric derivative, which presents Mittag-Leffler functions as eigenfunctions.
The use of structu... | Structural scale $q-$derivative and the LLG-Equation in a scenario with fractionality | 1701.08076v2 |
Oscillation time and damping coecients in a nonlinear pendulum Jaime Arango March 24, 2022 Abstract We establish a relationship between the normalized damping co- ecients and the time that takes a nonlinear pendulum to complete one oscillation starting from an initial position with vanishing velocity. We establish so... | 2021-01-23 | We establish a relationship between the normalized damping coefficients and
the time that takes a nonlinear pendulum to complete one oscillation starting
from an initial position with vanishing velocity. We establish some conditions
on the nonlinear restitution force so that this oscillation time does not
depend monoto... | Oscillation time and damping coefficients in a nonlinear pendulum | 2101.09400v2 |
1 Scaling of spin Hall angle in 3 d, 4d and 5d metals from Y3Fe5O12/metal spin pumping H. L. Wang†, C. H. Du†, Y . Pu, R. Adur, P. C. Hammel*, F. Y . Yang* Department of Physics, The Ohio State University, Columbus, OH 43210 ,USA †These authors made equal contributions to this work *E-mails:fyyang@physics... | 2013-07-10 | Pure spin currents generated by spin pumping in ferromagnet/nonmagnet (FM/NM)
bilayers produce inverse spin Hall effect (ISHE) voltages in the NM, from which
spin pumping and transport characteristics of the NM can be extracted. Due to
its exceptionally low damping, Y3Fe5O12 (YIG) is an important and widely used
FM for... | Scaling of spin Hall angle in 3d, 4d and 5d metals from Y3Fe5O12/metal spin pumping | 1307.2648v2 |
Light-induced magnetization precession in GaMnAs E. Rozkotová, P. N ěmeca), P. Horodyská, D. Sprinzl, F. Trojánek, and P. Malý Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 3, 121 16 Prague 2, Czech Republic V. Novák, K. Olejník, M. Cukr, and T. Jungwirth Institute of Physics AS... | 2008-02-14 | We report dynamics of the transient polar Kerr rotation (KR) and of the
transient reflectivity induced by femtosecond laser pulses in ferromagnetic
(Ga,Mn)As with no external magnetic field applied. It is shown that the
measured KR signal consist of several different contributions, among which only
the oscillatory sign... | Light-induced magnetization precession in GaMnAs | 0802.2043v2 |
Mechanisms behind large Gilbert damping anisotropies I. P. Miranda1, A. B. Klautau2,∗A. Bergman3, D. Thonig3,4, H. M. Petrilli1, and O. Eriksson3,4 1Universidade de São Paulo, Instituto de Física, Rua do Matão, 1371, 05508-090, São Paulo, SP, Brazil 2Faculdade de Física, Universidade Federal do Pará, Belém, PA, Brazil ... | 2021-01-07 | A method with which to calculate the Gilbert damping parameter from a
real-space electronic structure method is reported here. The anisotropy of the
Gilbert damping with respect to the magnetic moment direction and local
chemical environment is calculated for bulk and surfaces of Fe$_{50}$Co$_{50}$
alloys from first pr... | Mechanisms behind large Gilbert damping anisotropies | 2101.02794v2 |
Hydrodynamic theory of coupled current and magnetization dynamics in spin-textured ferromagnets Clement H. Wong and Yaroslav Tserkovnyak Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA We develop the hydrodynamic theory of collinear spin currents coupled to magnetizatio... | 2009-05-28 | We develop the hydrodynamical theory of collinear spin currents coupled to
magnetization dynamics in metallic ferromagnets. The collective spin density
couples to the spin current through a U(1) Berry-phase gauge field determined
by the local texture and dynamics of the magnetization. We determine
phenomenologically th... | Hydrodynamic theory of coupled current and magnetization dynamics in spin-textured ferromagnets | 0905.4544v2 |
CONVERGENCE ANALYSIS OF AN IMPLICIT FINITE DIFFERENCE METHOD FOR THE INERTIAL LANDAU-LIFSHITZ-GILBERT EQUATION JINGRUN CHEN, PANCHI LI, AND CHENG WANG Abstract. The Landau-Lifshitz-Gilbert (LLG) equation is a widely used model for fast magnetization dynamics in ferromagnetic materials. Recently, the iner- tial LLG equa... | 2022-09-07 | The Landau-Lifshitz-Gilbert (LLG) equation is a widely used model for fast
magnetization dynamics in ferromagnetic materials. Recently, the inertial LLG
equation, which contains an inertial term, has been proposed to capture the
ultra-fast magnetization dynamics at the sub-picosecond timescale.
Mathematically, this gen... | Convergence analysis of an implicit finite difference method for the inertial Landau-Lifshitz-Gilbert equation | 2209.02914v2 |
1 Engineering Co 2MnAl xSi1-x Heusler compounds as a model system to correlate spin polarization, intrinsic Gilbert damping and ultrafast demagnetization C. Guillemard1,2, W. Zhang1*, G. Malinowski1, C. de Melo1, J. Gorchon1, S. Petit - Watelot1, J. Ghan baja1, S. Mangin1, P. Le Fèvre2, F. Bertran2, S. Andrieu1* ... | 2020-02-07 | Engineering of magnetic materials for developing better spintronic
applications relies on the control of two key parameters: the spin polarization
and the Gilbert damping responsible for the spin angular momentum dissipation.
Both of them are expected to affect the ultrafast magnetization dynamics
occurring on the femt... | Engineering Co$_2$MnAl$_x$Si$_{1-x}$ Heusler compounds as a model system to correlate spin polarization, intrinsic Gilbert damping and ultrafast demagnetization | 2002.02686v1 |
arXiv:2009.07777v1 [math.AP] 16 Sep 2020Exponential decay for semilinear wave equations with visco elastic damping and delay feedback Alessandro Paolucci∗Cristina Pignotti† Abstract In this paperwestudy aclassofsemilinearwavetype equationswith v iscoelasticdamping anddelayfeedbackwithtimevariablecoefficient.Bycombining... | 2020-09-16 | In this paper we study a class of semilinear wave type equations with
viscoelastic damping and delay feedback with time variable coefficient. By
combining semigroup arguments, careful energy estimates and an iterative
approach we are able to prove, under suitable assumptions, a well-posedness
result and an exponential ... | Exponential decay for semilinear wave equations with viscoelastic damping and delay feedback | 2009.07777v1 |
arXiv:1701.09110v1 [cond-mat.mes-hall] 31 Jan 2017Lack of correlation between the spin mixing conductance and the ISHE-generated voltages in CoFeB/Pt,Ta bilayers A. Conca,1,∗B. Heinz,1M. R. Schweizer,1S. Keller,1E. Th. Papaioannou,1and B. Hillebrands1 1Fachbereich Physik and Landesforschungszentrum OPTIMAS, Technisch... | 2017-01-31 | We investigate spin pumping phenomena in polycrystalline CoFeB/Pt and
CoFeB/Ta bilayers and the correlation between the effective spin mixing
conductance $g^{\uparrow\downarrow}_{\rm eff}$ and the obtained voltages
generated by the spin-to-charge current conversion via the inverse spin Hall
effect in the Pt and Ta laye... | Lack of correlation between the spin mixing conductance and the ISHE-generated voltages in CoFeB/Pt,Ta bilayers | 1701.09110v1 |
arXiv:2107.00982v3 [cond-mat.supr-con] 25 Aug 2021Anomalous Gilbert Damping and Duffing Features of the SFS ϕ0Josephson Junction Yu. M. Shukrinov1,2, I. R. Rahmonov1,3, A. Janalizadeh4, and M. R. Kolahchi4 1BLTP, JINR, Dubna, Moscow Region, 141980, Russia 2Dubna State University, Dubna, 141980, Russia 3Umarov Physical ... | 2021-07-02 | We demonstrate unusual features of phase dynamics, IV-characteristics and
magnetization dynamics of the $\varphi_0$ Josephson junction at small values of
spin-orbit interaction, ratio of Josephson to magnetic energy and Gilbert
damping. In particular, an anomalous shift of the ferromagnetic resonance
frequency with an ... | Anomalous Gilbert Damping and Duffing Features of the SFS {\boldmath $\varphi_0$} Josephson Junction | 2107.00982v3 |
The following article has been accepted by Applied Physics Letters from AIP. Magnon -mediated spin currents in Tm 3Fe5O12/Pt with perpendicular magnetic anisotropy G. L. S. Vilela1,2, J. E. Abrao3, E. Santos3, Y. Yao4,5, J. B. S. Mendes 6, R. L. Rodríguez -Suárez7, S. M. Rezende3, W. Han4,5, A. Azevedo3, ... | 2020-09-22 | The control of pure spin currents carried by magnons in magnetic insulator
(MI) garnet films with a robust perpendicular magnetic anisotropy (PMA) is of
great interest to spintronic technology as they can be used to carry, transport
and process information. Garnet films with PMA present labyrinth domain
magnetic struct... | Magnon-mediated spin currents in Tm3Fe5O12/Pt with perpendicular magnetic anisotropy | 2009.10299v1 |
1 Control of magnetization dynamics by substrate orientation in YIG thin films Ganesh Gurjar1, Vinay Sharma3, S. Patnaik1*, Bijoy K. Kuanr2,* 1School of Physical Sciences, Jawaharlal Nehru University, New Delhi, INDIA 110067 2Special Centre for Nanosciences, Jawaharlal Nehru University, New Delhi, INDIA 110067 ... | 2021-09-13 | Yttrium Iron Garnet (YIG) and bismuth (Bi) substituted YIG (Bi0.1Y2.9Fe5O12,
BYG) films are grown in-situ on single crystalline Gadolinium Gallium Garnet
(GGG) substrates [with (100) and (111) orientations] using pulsed laser
deposition (PLD) technique. As the orientation of the Bi-YIG film changes from
(100) to (111),... | Control of magnetization dynamics by substrate orientation in YIG thin films | 2109.05901v1 |
Spin transport and tunable Gilbert damping in a single-molecule magnet junction Milena Filipović,1Cecilia Holmqvist,1Federica Haupt,2and Wolfgang Belzig1 1Fachbereich Physik, Universität Konstanz, D-78457 Konstanz, Germany 2Institut für Theorie der Statistischen Physik, RWTH Aachen, D-52056 Aachen, Germany (Dated: Octo... | 2012-11-15 | We study time-dependent electronic and spin transport through an electronic
level connected to two leads and coupled with a single-molecule magnet via
exchange interaction. The molecular spin is treated as a classical variable and
precesses around an external magnetic field. We derive expressions for charge
and spin cu... | Spin transport and tunable Gilbert damping in a single-molecule magnet junction | 1211.3611v2 |
arXiv:0809.2910v1 [cond-mat.other] 17 Sep 2008Spin-transfer torque induced reversal in magnetic domains S. MurugeshaM. Lakshmananb aDepartment of Physics & Meteorology, IIT-Kharagpur, Kharagpu r 721 302, India bCentre for Nonlinear Dynamics, School of Physics, Bharathid asan University, Tiruchirappalli 620024, India ... | 2008-09-17 | Using the complex stereographic variable representation for the macrospin,
from a study of the nonlinear dynamics underlying the generalized
Landau-Lifshitz(LL) equation with Gilbert damping, we show that the
spin-transfer torque is effectively equivalent to an applied magnetic field. We
study the macrospin switching o... | Spin-transfer torque induced reversal in magnetic domains | 0809.2910v1 |
Antidamping spin-orbit torque driven by spin-
ip re
ection mechanism on the surface of a topological insulator: A time-dependent nonequilibrium Green function approach Farzad Mahfouzi,1,Branislav K. Nikoli c,2and Nicholas Kioussis1 1Department of Physics, California State University, Northridge, CA 91330-8268, USA 2D... | 2015-06-03 | Motivated by recent experiments observing spin-orbit torque (SOT) acting on
the magnetization $\vec{m}$ of a ferromagnetic (F) overlayer on the surface of
a three-dimensional topological insulator (TI), we investigate the origin of
the SOT and the magnetization dynamics in such systems. We predict that lateral
F/TI bil... | Antidamping spin-orbit torque driven by spin-flip reflection mechanism on the surface of a topological insulator: A time-dependent nonequilibrium Green function approach | 1506.01303v3 |
arXiv:1907.07470v2 [math.AP] 10 Dec 2019Inhomogeneous domain walls in spintronic nanowires L. Siemer∗I. Ovsyannikov†J.D.M. Rademacher‡ December 12, 2019 In case of a spin-polarized current, the magnetization dynamics in n anowires are governed by the classical Landau-Lifschitz equation with Gilbertdamp- ing term, aug... | 2019-07-17 | In case of a spin-polarized current, the magnetization dynamics in nanowires
are governed by the classical Landau-Lifschitz equation with Gilbert damping
term, augmented by a typically non-variational Slonczewski term. Taking axial
symmetry into account, we study the existence of domain wall type coherent
structure sol... | Inhomogeneous domain walls in spintronic nanowires | 1907.07470v2 |
1 Nonlinear s ub-switching regime of magnetization dynamics in photo -magnetic garnets A. Frej, I. Razdolski, A. Maziewski, and A. Stupakiewicz Faculty of Physics, University of Bialystok, 1L Ciolkowskiego, 1 5-245 Bialystok, Poland Abstract. We analyze, both experimentally and numerically, the nonlinear reg... | 2022-11-15 | We analyze, both experimentally and numerically, the nonlinear regime of the
photo-induced coherent magnetization dynamics in cobalt-doped yttrium iron
garnet films. Photo-magnetic excitation with femtosecond laser pulses reveals a
strongly nonlinear response of the spin subsystem with a significant increase
of the eff... | Nonlinear sub-switching regime of magnetization dynamics in photo-magnetic garnets | 2211.08048v2 |
arXiv:1903.05415v2 [math.NA] 20 Mar 2020HIGHER-ORDER LINEARLY IMPLICIT FULL DISCRETIZATION OF THE LANDAU–LIFSHITZ–GILBERT EQUATION GEORGIOS AKRIVIS, MICHAEL FEISCHL, BAL ´AZS KOV ´ACS, AND CHRISTIAN LUBICH Abstract. For the Landau–Lifshitz–Gilbert (LLG) equation of micromagnetics we study linearly implicit backward d... | 2019-03-13 | For the Landau--Lifshitz--Gilbert (LLG) equation of micromagnetics we study
linearly implicit backward difference formula (BDF) time discretizations up to
order $5$ combined with higher-order non-conforming finite element space
discretizations, which are based on the weak formulation due to Alouges but use
approximate ... | Higher-order linearly implicit full discretization of the Landau--Lifshitz--Gilbert equation | 1903.05415v2 |
Gilbert damping in metallic ferromagnets from Schwinger-Keldysh field theory: Intrinsically nonlocal and nonuniform, and made anisotropic by spin-orbit coupling Felipe Reyes-Osorio and Branislav K. Nikoli´ c∗ Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, USA (Dated: March 1, 2024) Under... | 2023-06-22 | Understanding the origin of damping mechanisms in magnetization dynamics of
metallic ferromagnets is a fundamental problem for nonequilibrium many-body
physics of systems where quantum conduction electrons interact with localized
spins assumed to be governed by the classical Landau-Lifshitz-Gilbert (LLG)
equation. It i... | Gilbert damping in metallic ferromagnets from Schwinger-Keldysh field theory: Intrinsically nonlocal and nonuniform, and made anisotropic by spin-orbit coupling | 2306.13013v4 |
Damped bead on a rotating circular hoop - a bifurcation zoo Shovan Dutta Department of Electronics and Telecommunication Engineering, Jadavpur University, Calcutta 700 032, India. Subhankar Ray Department of Physics, Jadavpur University, Calcutta 700 032, India. The evergreen problem of a bead on a rotating hoop shows... | 2012-01-05 | The evergreen problem of a bead on a rotating hoop shows a multitude of
bifurcations when the bead moves with friction. This motion is studied for
different values of the damping coefficient and rotational speeds of the hoop.
Phase portraits and trajectories corresponding to all different modes of motion
of the bead ar... | Damped bead on a rotating circular hoop - a bifurcation zoo | 1201.1218v1 |
The e ects of time-dependent dissipation on the basins of attraction for the pendulum with oscillating support James A. Wright1, Michele Bartuccelli1, Guido Gentile2 1Department of Mathematics, University of Surrey, Guildford, GU2 7XH, UK 2Dipartimento di Matematica e Fisica, Universit a di Roma Tre, 00146 Roma, Italy... | 2014-03-19 | We consider a pendulum with vertically oscillating support and time-dependent
damping coefficient which varies until reaching a finite final value. The sizes
of the corresponding basins of attraction are found to depend strongly on the
full evolution of the dissipation. In order to predict the behaviour of the
system, ... | The effects of time-dependent dissipation on the basins of attraction for the pendulum with oscillating support | 1403.4996v1 |
arXiv:1012.4455v1 [math.AP] 20 Dec 2010GLOBAL ATTRACTORS FOR THE ONE DIMENSIONAL WAVE EQUATION WITH DISPLACEMENT DEPENDENT DAMPING A.KH.KHANMAMEDOV Abstract. We study the long-time behavior of solutions of the one dimen sional wave equation with nonlinear damping coefficient. We prove that if the dampi ng coefficient fun... | 2010-12-20 | We study the long-time behavior of solutions of the one dimensional wave
equation with nonlinear damping coefficient. We prove that if the damping
coefficient function is strictly positive near the origin then this equation
possesses a global attractor. | Global attractors for the one dimensional wave equation with displacement dependent damping | 1012.4455v1 |
arXiv:1402.1787v1 [math.DS] 7 Feb 2014One-Dimensional Random Attractor and Rotation Number of the Stochastic Damped Sine-Gordon Equation Zhongwei Shena,1, Shengfan Zhoua,1,∗, Wenxian Shenb,2 aDepartment of Applied Mathematics, Shanghai Normal Univer sity, Shanghai 200234, PR China bDepartment of Mathematics and Stati... | 2014-02-07 | This paper is devoted to the study of the asymptotic dynamics of the
stochastic damped sine-Gordon equation with homogeneous Neumann boundary
condition. It is shown that for any positive damping and diffusion
coefficients, the equation possesses a random attractor, and when the damping
and diffusion coefficients are su... | One-dimensional random attractor and rotation number of the stochastic damped sine-Gordon equation | 1402.1787v1 |
arXiv:1608.00984v2 [cond-mat.mes-hall] 13 Aug 2016Ferromagnetic Damping/Anti-damping in a Periodic 2D Helic al surface; A Non-Equilibrium Keldysh Green Function Approach Farzad Mahfouzi1,∗and Nicholas Kioussis1 1Department of Physics, California State University, North ridge, California 91330-8268, USA In this paper,... | 2016-08-02 | In this paper, we investigate theoretically the spin-orbit torque as well as
the Gilbert damping for a two band model of a 2D helical surface state with a
Ferromagnetic (FM) exchange coupling. We decompose the density matrix into the
Fermi sea and Fermi surface components and obtain their contributions to the
electroni... | Ferromagnetic Damping/Anti-damping in a Periodic 2D Helical surface; A Non-Equilibrium Keldysh Green Function Approach | 1608.00984v2 |
arXiv:2309.08281v1 [math.AP] 15 Sep 2023ON THE FORMATION OF SINGULARITIES FOR THE SLIGHTLY SUPERCRITICAL NLS EQUATION WITH NONLINEAR DAMPING PAOLO ANTONELLI AND BORIS SHAKAROV Abstract. We consider the focusing, mass-supercritical NLS equation augmented with a nonlin- ear damping term. We provide sufficient conditions ... | 2023-09-15 | We consider the focusing, mass-supercritical NLS equation augmented with a
nonlinear damping term. We provide sufficient conditions on the nonlinearity
exponents and damping coefficients for finite-time blow-up. In particular,
singularities are formed for focusing and dissipative nonlinearities of the
same power, provi... | On the formation of singularities for the slightly supercritical NLS equation with nonlinear damping | 2309.08281v1 |
9-11 April 2008 ©EDA Publishing/DTIP 2008 ISBN: 978-2-35500-006-5 Comparison Between Damping Coefficients of Measured Perforated Structures and Compact Models T. Veijola1, G. De Pasquale2, and A. Somá2 1 Department of Radio Science and Engineering, Helsinky University of Technology P.O. Box 3000, 02015 TKK, Fi... | 2008-05-07 | Measured damping coefficients of six different perforated micromechanical
test structures are compared with damping coefficients given by published
compact models. The motion of the perforated plates is almost translational,
the surface shape is rectangular, and the perforation is uniform validating the
assumptions mad... | Comparison Between Damping Coefficients of Measured Perforated Micromechanical Test Structures and Compact Models | 0805.0893v1 |
1 Growth parameters of Bi 0.1Y2.9Fe5O12 thin films for high frequency applications Ganesh Gurjar1,4, Vinay Sharma2, S. Patnaik1,*, Bijoy K. Kuanr3 1School of Physical S ciences, Jawaharlal Neh ru University, New Delhi, INDIA 110067 2Department of Physics, Morgan State University, Baltimore, MD, USA 21251 3... | 2022-09-01 | The growth and characterization of Bismuth (Bi) substituted YIG (Bi-YIG,
Bi0.1Y2.9Fe5O12) thin films are reported. Pulsed laser deposited (PLD) films
with thicknesses ranging from 20 to 150 nm were grown on Gadolinium Gallium
Garnet substrates. Two substrate orientations of (100) and (111) were
considered. The enhanced... | Growth parameters of Bi0.1Y2.9Fe5O12 thin films for high frequency applications | 2209.00558v1 |
arXiv:1212.1772v3 [math.AP] 14 Mar 2013A NOTE ON THE LIFESPAN OF SOLUTIONS TO THE SEMILINEAR DAMPED WAVE EQUATION MASAHIRO IKEDA AND YUTA WAKASUGI Abstract. This paper concerns estimates of the lifespan of solutions t o the semilinear damped wave equation /squareu+Φ(t,x)ut=|u|pin (t,x)∈[0,∞)×Rn, where the coefficient o... | 2012-12-08 | This paper concerns estimates of the lifespan of solutions to the semilinear
damped wave equation. We give upper estimates of the lifespan for the
semilinear damped wave equation with variable coefficients in all space
dimensions. | A note on the lifespan of solutions to the semilinear damped wave equation | 1212.1772v3 |
Calculation of Gilbert damping and magnetic moment of inertia using torque-torque correlation model within ab initio Wannier framework Robin Bajaj1, Seung-Cheol Lee2, H. R. Krishnamurthy1, Satadeep Bhattacharjee2,∗and Manish Jain1† 1Centre for Condensed Matter Theory, Department of Physics, Indian Institute of Science,... | 2024-01-01 | Magnetization dynamics in magnetic materials are well described by the
modified semiclassical Landau-Lifshitz-Gilbert (LLG) equation, which includes
the magnetic damping $\alpha$ and the magnetic moment of inertia $\mathrm{I}$
tensors as key parameters. Both parameters are material-specific and physically
represent the... | Calculation of Gilbert damping and magnetic moment of inertia using torque-torque correlation model within ab initio Wannier framework | 2401.00714v1 |
arXiv:1608.04071v1 [physics.class-ph] 14 Aug 2016Mechanical energy and mean equivalent viscous damping for SDOF fractional oscillators Jian Yuan1,∗, Bao Shi, Mingjiu Gai, Shujie Yang Institute of System Science and Mathematics, Naval Aeronau tical and Astronautical University, Yantai 264001, P.R.China Abstract Thispa... | 2016-08-14 | This paper addresses the total mechanical energy of a single degree of
freedom fractional oscillator. Based on the energy storage and dissipation
properties of the Caputo fractional derivatives, the expression for total
mechanical energy in the single degree of freedom fractional oscillator is
firstly presented. The en... | Mechanical energy and mean equivalent viscous damping for SDOF fractional oscillators | 1608.04071v1 |
arXiv:2307.05981v1 [math.AP] 12 Jul 2023PARABOLIC-ELLIPTIC KELLER-SEGEL’S SYSTEM VALENTIN LEMARIÉ Abstract. We study on the whole space Rdthe compressible Euler system with damping coupled to the Poisson equation when the damping coefficient tends towards i nfinity. We first prove a result of global existence for the Eul... | 2023-07-12 | We study on the whole space R d the compressible Euler system with damping
coupled to the Poisson equation when the damping coefficient tends towards
infinity. We first prove a result of global existence for the Euler-Poisson
system in the case where the damping is large enough, then, in a second step,
we rigorously ju... | Parabolic-elliptic Keller-Segel's system | 2307.05981v1 |
1 Determination of intrinsic damping of perpendicularly magnetized ultrathin films from time resolved precessional magnetization measurements Amir Capua1,*, See -hun Yang1, Timothy Phung1, Stuart S. P. Parkin1,2 1 IBM Research Division, Almaden Research Center, 650 Harry Rd., San Jose, California 95120, US... | 2015-11-16 | Magnetization dynamics are strongly influenced by damping. An effective
damping constant {\alpha}eff is often determined experimentally from the
spectral linewidth of the free induction decay of the magnetization after the
system is excited to its non-equilibrium state. Such an {\alpha}eff, however,
reflects both intri... | Determination of intrinsic damping of perpendicularly magnetized ultrathin films from time resolved precessional magnetization measurements | 1511.04802v1 |
arXiv:1604.04688v1 [cond-mat.mtrl-sci] 16 Apr 2016A broadband Ferromagnetic Resonance dipper probe for magne tic damping measurements from 4.2 K to 300 K Shikun Hea)and Christos Panagopoulosb) Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological Univers ity, Sin... | 2016-04-16 | A dipper probe for broadband Ferromagnetic Resonance (FMR) operating from 4.2
K to room temperature is described. The apparatus is based on a 2-port
transmitted microwave signal measurement with a grounded coplanar waveguide.
The waveguide generates a microwave field and records the sample response. A
3-stage dipper de... | A broadband Ferromagnetic Resonance dipper probe for magnetic damping measurements from 4.2 K to 300 K | 1604.04688v1 |
arXiv:2010.01044v4 [math.NA] 6 Oct 2022Multilevel quasi-Monte Carlo for random elliptic eigenval ue problems I: Regularity and error analysis Alexander D. Gilbert1Robert Scheichl2 October 7, 2022 Abstract Stochastic PDE eigenvalue problems are useful models for quantify ing the uncer- tainty in several applications f... | 2020-10-02 | Stochastic PDE eigenvalue problems are useful models for quantifying the
uncertainty in several applications from the physical sciences and engineering,
e.g., structural vibration analysis, the criticality of a nuclear reactor or
photonic crystal structures. In this paper we present a multilevel quasi-Monte
Carlo (MLQM... | Multilevel quasi-Monte Carlo for random elliptic eigenvalue problems I: Regularity and error analysis | 2010.01044v4 |
Stoner-Wohlfarth switching of the condensate magnetization in a dipolar spinor gas and the metrology of excitation damping Seong-Ho Shinn,1Daniel Braun,2and Uwe R. Fischer1 1Department of Physics and Astronomy, Seoul National University, 08826 Seoul, Korea 2Eberhard-Karls-Universit at T ubingen, Institut f ur Theoretis... | 2020-02-20 | We consider quasi-one-dimensional dipolar spinor Bose-Einstein condensates in
the homogeneous-local-spin-orientation approximation, that is with
unidirectional local magnetization. By analytically calculating the exact
effective dipole-dipole interaction, we derive a Landau-Lifshitz-Gilbert
equation for the dissipative... | Stoner-Wohlfarth switching of the condensate magnetization in a dipolar spinor gas and the metrology of excitation damping | 2002.08723v2 |
1Thickness-dependentmagneticpropertiesinPt/[Co/Ni]n multilayerswithperpendicularmagneticanisotropy* ChunjieYan(晏春杰)1,LinaChen(陈丽娜)1,2,#,KaiyuanZhou(周恺元)1,Liupeng Yang(杨留鹏)1,QingweiFu(付清为)1,WenqiangWang(王文强)1,Wen-Cheng Yue(岳文诚)3,LikeLiang(梁立克)1,ZuiTao(陶醉)1,JunDu(杜军)1,Yong-Lei Wang(王永磊)3andRonghuaLiu(刘荣华)1* 1NationalLabo... | 2023-04-19 | We systematically investigated the Ni and Co thickness-dependent
perpendicular magnetic anisotropy (PMA) coefficient, magnetic domain
structures, and magnetization dynamics of Pt(5 nm)/[Co(t_Co nm)/Ni(t_Ni
nm)]5/Pt(1 nm) multilayers by combining the four standard magnetic
characterization techniques. The magnetic-relat... | Thickness-dependent magnetic properties in Pt[CoNi]n multilayers with perpendicular magnetic anisotropy | 2304.09366v1 |
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