publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
|---|---|---|---|
2010-02-26 | Bends In Nanotubes Allow Electric Spin Control and Coupling | We investigate combined effects of spin-orbit coupling and magnetic field in
carbon nanotubes containing one or more bends along their length. We show how
bends can be used to provide electrical control of confined spins, while spins
confined in straight segments remain insensitive to electric fields. Device
geometries... | 1003.0037v2 |
2010-02-27 | Cavity quantum electro-optics | The quantum dynamics of the coupling between a cavity optical field and a
resonator microwave field via the electro-optic effect is studied. This
coupling has the same form as the opto-mechanical coupling via radiation
pressure, so all previously considered opto-mechanical effects can in principle
be observed in electr... | 1003.0116v3 |
2010-03-01 | Isovector channel of quark-meson-coupling model and its effect on symmetry energy | The non-relativistic approximation of the quark-meson-coupling model has been
discussed and compared with the Skyrme-Hartree-Fock model which includes spin
exchanges. Calculations show that the spin-exchange interaction has important
effect on the descriptions of finite nuclei and nuclear matter through the Fock
exchan... | 1003.0271v2 |
2010-03-03 | From coupled elementary units to the complexity of the glass transition | Supercooled liquids display fascinating properties upon cooling such as the
emergence of dynamic length scales. Different models strongly vary with respect
to the choice of the elementary subsystems (CRR) as well as their mutual
coupling. Here we show via computer simulations of a glass former that both
ingredients can... | 1003.0781v1 |
2010-03-06 | Magnetoresistance studies of $La_{2/3} Sr_{1/3} MnO_3$ - $YBa_2 Cu_3 O_7$ - $La_{2/3} Sr_{1/3} Mn O_3$ trilayers with ferromagnetic coupling along the nodal direction of $YBa_2 Cu_3 O_7$ | I have successfully prepared (110) trilayers of \LSMO-\YBCO-\LSMO.
Magnetization measurements on these samples reveal a stronger coupling between
the ferromagnetic layers. The coupling is an order of magnitude higher than
that seen in the case of (001) trilayers. Magnetoresistance measurements show a
first order transi... | 1003.1414v1 |
2010-03-10 | Quantum Phase Transition in Coupled Superconducting Quantum Dots Array with Charge Frustration | We present the quantum phase transition in two capacitively coupled arrays of
superconducting quantum dots (SQD). We consider the presence of gate voltage in
each superconducting island. We show explicitly that the co-tunneling process
involves with two coupled SQD arrays, near the maximum charge frustration line
is no... | 1003.2038v1 |
2010-03-11 | Linewidth broadening of a quantum dot coupled to an off-resonant cavity | We study the coupling between a photonic crystal cavity and an off-resonant
quantum dot under resonant excitation of the cavity or the quantum dot.
Linewidths of the quantum dot and the cavity as a function of the excitation
laser power are measured. We show that the linewidth of the quantum dot,
measured by observing ... | 1003.2350v1 |
2010-03-14 | Mode Coupling in a Tapered Slow Light Waveguide | Metamaterials with simultaneous negative permittivity and negative
permeability (also called left-handed materials) open new avenues to achieving
unprecedented physical properties and functionality unattainable with naturally
occurring materials. It has been predicted that a metamaterial slab waveguide
can slow down li... | 1003.2768v1 |
2010-03-16 | Circuit approach to photonic heat transport | We discuss the heat transfer by photons between two metals coupled by a
linear element with a reactive impedance. Using a simple circuit approach, we
calculate the spectral power transmitted from one resistor to the other and
find that it is determined by the photon transmission coefficient, which
depends on the impeda... | 1003.3217v2 |
2010-03-17 | Study of the running coupling constant in 10-flavor QCD with the Schrödinger functional method | The electroweak gauge symmetry is allowed to be spontaneously broken by the
strongly interacting vector-like gauge dynamics. When the gauge coupling of a
theory runs slowly in a wide range of energy scale, the theory is a candidate
for walking technicolor. This may open up the possibility that the origin of
all masses ... | 1003.3288v1 |
2010-03-23 | Mean field approach to flavor susceptibilities with a vector interaction | We show that flavor diagonal and off-diagonal susceptibilities of light
quarks at vanishing chemical potential can be calculated consistently assuming
the baryon density and isospin density dependence of QCD to be expressed by a
vector-isoscalar and a vector-isovector coupling, respectively. At the mean
field level, th... | 1003.4428v2 |
2010-03-23 | Direct observation of mode-coupling instability in two-dimensional plasma crystals | Dedicated experiments on melting of 2D plasma crystals were carried out. The
melting was always accompanied by spontaneous growth of the particle kinetic
energy, suggesting a universal plasma-driven mechanism underlying the process.
By measuring three principal dust-lattice (DL) wave modes simultaneously, it is
unambig... | 1003.4479v1 |
2010-03-31 | Coupling Supersymmetric Nonlinear Sigma Models to Supergravity | It is known that supersymmetric nonlinear sigma models for the compact Kahler
manifolds G/H cannot be consistently coupled to supergravity, since the Kahler
potentials are not invariant under the G transformation. We show that the
supersymmetric nonlinear sigma models can be deformed such that the Kahler
potential be e... | 1003.5985v1 |
2010-04-12 | Magnetic field generation in Higgs inflation model | We study the generation of magnetic field in Higgs-inflation models where the
Standard Model Higgs boson has a large coupling to the Ricci scalar. We couple
the Higgs field to the Electromagnetic fields via a non- renormalizable
dimension six operator suppressed by the Planck scale in the Jordan frame. We
show that dur... | 1004.1927v1 |
2010-04-20 | Observations of temporal group delays in slow-light multiple coupled photonic crystal cavities | We demonstrate temporal group delays in coherently-coupled high-Q
multi-cavity photonic crystals, in an all-optical analogue to
electromagnetically induced transparency. We report deterministic control of
the group delay up to 4x the single cavity lifetime in our CMOS-fabricated
room-temperature chip. Supported by thre... | 1004.3477v1 |
2010-04-29 | Direct experimental measurement of phase-amplitude coupling in spin torque oscillators | We study spin-torque induced oscillations of MgO magnetic tunnel junctions in
the time domain. By using the Hilbert transform on the time traces, we obtain
for the first time a direct experimental measure of the coupling between the
power and the phase fluctuations. We deduce the power restoration rate and we
obtain lo... | 1004.5319v2 |
2010-06-01 | Self-pulsation in fiber-coupled on-chip microcavity lasers | We report self-pulsation in an erbium-doped silica toroidal microcavity laser
coupled to a tapered fiber and investigate the effects of pump power and
taper-cavity coupling condition on the dynamic behaviors of the pulse train.
The microcavity is pumped at 1444.8 nm, and lasing occurs at 1560.2 nm with a
threshold of 1... | 1006.0263v1 |
2010-06-03 | Shear Viscosity from the Effective Coupling of Gravitons | We review the progress in the holographic calculation of shear viscosity for
strongly coupled field theories. We focus on the calculation of shear viscosity
from the effective coupling of transverse gravitons and present some explicit
examples. | 1006.0539v3 |
2010-06-08 | Dark Viscous Fluid coupled with Dark Matter and future singularity | We study effects of viscous fluid coupled with dark matter in our universe.
We consider bulk viscosity in the cosmic fluid and we suppose the existence of
a coupling between fluid and dark matter, in order to reproduce a stable de
Sitter universe protected against future-time singularities. More general
inhomogeneous f... | 1006.1610v3 |
2010-06-10 | Semi-classical dynamics of nano-electromechanical systems | We investigate the dynamics of a single phonon (oscillator) mode linearly
coupled to an electronic few-level system in contact with external particle
reservoirs (leads). A stationary electronic current through the system
generates non-trivial dynamical behaviour of the oscillator. Using
Feynman-Vernon influence functio... | 1006.2076v1 |
2010-06-13 | A New Approach on the Seating Couples Problem | A king invites n couples to sit around a round table with 2n+1 seats. For
each couple, the king decides a prescribed distance d between 1 and n which the
two spouses have to be seated from each other (distance d means that they are
separated by exactly d-1 chairs). We will show that there is a solution for
every choice... | 1006.2571v1 |
2010-06-15 | Converting Divergent Weak-Coupling into Exponentially Fast Convergent Strong-Coupling Expansions | With the help of a simple variational procedure it is possible to convert the
partial sums of order $N$ of many divergent series expansions
$f(g)=\sum_{n=0}^\infty a_n g^n$ into partial sums $\sum_{n=0}^N b_n g^{-
\omega n}$, where $0<\omega<1$ is a parameter that parametrizes the approach to
the large-$g$ limit. The l... | 1006.2910v1 |
2010-06-18 | Broadband Homonuclear Decoupling | We present a solution to the problem of broadband decoupling of a coupled
homonuclear two-spin system. We describe a pulse sequence that creates an
effective field perpendicular to the coupling interaction with a magnitude
propotional to the chemical shift of the spins over a broad range of chemical
shifts. When the ch... | 1006.3815v3 |
2010-06-23 | Dissipation Properties of Coupled Cavity Arrays | We propose an approach to analyze the dissipation properties of coupled
cavity arrays. Employing a kind of quasi-boson, it is shown that the coupling
to a bath renormalizes the localized mode and the interaction between cavities.
By virtue of without having to mention the coordinates of bath, this approach
would be gre... | 1006.4412v1 |
2010-06-25 | Konishi operator at intermediate coupling | TBA equations for two-particle states from the sl(2) sector proposed by
Arutyunov, Suzuki and the author are solved numerically for the Konishi
operator descendent up to 't Hooft's coupling lambda ~ 2046. The data obtained
is used to analyze the properties of Y-functions and address the issue of the
existence of the cr... | 1006.5032v2 |
2010-06-29 | Extensive escape rate in lattices of weakly coupled expanding maps with holes | This paper discusses possible approaches to the escape rate in infinite
lattices of weakly coupled maps with uniformly expanding repeller. It is proved
that computed-via-volume rates of spatially periodic approximations grow
linearly with the period size, suggesting normalized escape rate as the
appropriate notion for ... | 1006.5528v1 |
2010-07-07 | Singlet-triplet relaxation induced by confined phonons in nanowire-based quantum dots | The singlet-triplet relaxation in nanowire-based quantum dots induced by
confined phonons is investigated theoretically. Due to the
quasi-one-dimensional nature of the confined phonons, the singlet-triplet
relaxation rates exhibit multi-peaks as function of magnetic field and the
relaxation rate between the singlet and... | 1007.1070v1 |
2010-07-13 | Quantum phase transitions in a new exactly solvable quantum spin biaxial model with multiple spin interactions | The new integrable quantum spin model is proposed. The model has a biaxial
magnetic anisotropy of alternating coupling between spins together with
multiple spin interactions. Our model gives the possibility to exactly find
thermodynamic characteristics of the considered spin chain. The ground state of
the model can rev... | 1007.2045v1 |
2010-07-15 | Coupling the inflaton to an expanding aether | We consider a Lorentz-violating theory of inflation consisting of
Einstein-aether theory with a scalar inflaton coupled bilinearly to the
expansion of the aether. We determine the conditions for linearized stability,
positive energy, and vanishing of preferred-frame post-Newtonian parameters,
and find that all these co... | 1007.2594v2 |
2010-07-19 | Mass anomalous dimension in SU(2) with six fundamental fermions | We simulate SU(2) gauge theory with six massless fundamental Dirac fermions.
We measure the running of the coupling and the mass in the Schroedinger
Functional scheme. We observe very slow running of the coupling constant. We
measure the mass anomalous dimension gamma, and find it is between 0.135 and
1.03 in the range... | 1007.3067v3 |
2010-07-20 | Strong Coupling Constants of Decuplet Baryons with Vector Mesons | We provide a comprehensive study of strong coupling constants of decuplet
baryons with light nonet vector mesons in the framework of light cone QCD sum
rules. Using the symmetry arguments, we argue that all coupling constants
entering the calculations can be expressed in terms of only one invariant
function even if the... | 1007.3389v1 |
2010-07-23 | Cascading of Liquid Crystal Elastomer Photomechanical Optical Devices | Photomechanical actuation is demonstrated in two coupled liquid crystal
elastomer photomechanical optical devices (PODs) acting in series. The response
function of an individual POD is characterized and used to predict the temporal
response of the coupled system. The predicted coupled-system response agrees
with the ex... | 1007.4032v2 |
2010-07-23 | Controllable, driven phase transitions in the Fractional quantum Hall states in bilayer graphene | Here we report from our theoretical studies that in biased bilayer graphene,
one can induce phase transitions from an incompressible fractional quantum Hall
state to a compressible state by tuning the bandgap at a given electron
density. The nature of such phase transitions is different for weak and strong
inter-layer ... | 1007.4188v1 |
2010-07-25 | Coexistence of Coulomb blockade and zero bias anomaly in a strongly coupled quantum dot | The current-voltage characteristics through a metallic quantum dot which is
well coupled to a metallic lead are measured. It is shown that the I-V curves
are composed of two contributions. One is a suppression of the tunneling
conductivity at the Fermi level and the second is an oscillating feature which
shifts with ga... | 1007.4300v1 |
2010-07-26 | Technicolor at Criticality | We propose an asymptotically non-free, natural model for dynamical
electro-weak symmetry breaking characterized by the emergence of a weakly
coupled Higgs in the IR regime. Due to the large anomalous dimension of the
Higgs operator, the model is capable of solving the hierarchy problem without
losing the phenomenologic... | 1007.4573v2 |
2010-07-28 | Current-induced torques in the presence of spin-orbit coupling | In systems with strong spin-orbit coupling, the relationship between
spin-transfer torque and the divergence of the spin current is generalized to a
relation between spin transfer torques, total angular momentum current, and
mechanical torques. In ferromagnetic semiconductors, where the spin-orbit
coupling is large, th... | 1007.5037v1 |
2010-07-29 | Modular values and weak values of quantum observables | The concept of a modular value of an observable of a pre- and post-selected
quantum system is introduced. It is similar in form and in some cases has a
close connection to the weak value of an observable, but instead of describing
an effective interaction when the coupling is weak, it describes a coupling of
any streng... | 1007.5281v1 |
2010-08-02 | Strong Coupling between On Chip Notched Ring Resonator and Nanoparticle | We have demonstrated a new photonic structure to achieve strong optical
coupling between nanoparticle and photonic molecule by utilizing a notched
micro ring resonators. By creating a notch in the ring resonator and putting a
nanoparticle inside the notch, large spectral shifts and splittings at nm scale
can be achieve... | 1008.0282v1 |
2010-08-03 | Synchronization of Phase-coupled Oscillators with Distance-dependent Delay | By means of numerical integration we investigate the coherent and incoherent
phases in a generalized Kuramoto model of phase-coupled oscillators with
distance-dependent delay. Preserving the topology of a complete graph, we
arrange the nodes on a square lattice while introducing finite interaction
velocity, which gives... | 1008.0494v1 |
2010-08-06 | Observation of magneto-phonon resonance of Dirac fermions in graphite | Coherent coupling of Dirac fermion magneto-excitons with an optical phonon is
observed in graphite as marked magnetic-field dependent splittings and
anti-crossing behavior of the two coupled modes. The sharp magneto-phonon
resonance occurs in regions of the graphite sample with properties of superior
single-layer graph... | 1008.1206v1 |
2010-08-19 | Impurity Scattering in Luttinger Liquid with Electron-Phonon Coupling | We study the influence of electron-phonon coupling on electron transport
through a Luttinger liquid with an embedded weak scatterer or weak link. We
derive the renormalization group (RG) equations which indicate that the
directions of RG flows can change upon varying either the relative strength of
the electron-electro... | 1008.3270v1 |
2010-08-26 | Asymptotic Spreading Fastened by Inter-Specific Coupled Nonlinearities: a Cooperative System | This paper is concerned with the asymptotic spreading of a Lotka-Volterra
cooperative system. By using the theory of asymptotic spreading of
nonautonomous equations, the asymptotic speeds of spreading of unknown
functions formulated by a coupled system are estimated. Our results imply that
the asymptotic spreading of o... | 1008.4507v2 |
2010-09-07 | Parton saturation at strong coupling from AdS/CFT | I describe the parton picture at strong coupling emerging from the
gauge/gravity duality, with emphasis on the universality of the phenomenon of
parton saturation. I discuss several consequences of this picture for the
phenomenology of a strongly coupled quark-gluon plasma, which are potentially
relevant for heavy ion ... | 1009.1278v1 |
2010-09-08 | Coupling solutions of BGG-equations in conformal spin geometry | BGG-equations are geometric overdetermined systems of PDEs on parabolic
geometries. Normal solutions of BGG-equations are particularly interesting and
we give a simple formula for the necessary and sufficient additional
integrability conditions on a solution. We then discuss a procedure for
coupling known solutions of ... | 1009.1547v1 |
2010-09-16 | Evidence for site-centered stripes from magnetic excitations in CuO superconductors | The success of models of coupled two-leg spin ladders in describing the
magnetic excitation spectrum of La_[2-x]Ba_xCuO_4 has been widely interpreted
as evidence for bond-centered stripes. Here, we determine the magnetic coupling
induced by the charge stripes between bond- or site-centered spin stripes
modeled by two- ... | 1009.3122v1 |
2010-09-16 | Complexity of waves in nonlinear disordered media | The statistical properties of the phases of several modes nonlinearly coupled
in a random system are investigated by means of a Hamiltonian model with
disordered couplings. The regime in which the modes have a stationary
distribution of their energies and the phases are coupled is studied for
arbitrary degrees of rando... | 1009.3290v1 |
2010-09-18 | Tunneling characteristic of a chain of Majorana bound states | We consider theoretically tunneling characteristic of a junction between a
normal metal and a chain of coupled Majorana bound states generated at
crossings between topological and non-topological superconducting sections, as
a result of, for example, disorder in nanowires. While an isolated Majorana
state supports a re... | 1009.3533v1 |
2010-09-19 | Strong coupling constants of light pseudoscalar mesons with heavy baryons in QCD | We calculate the strong coupling constants of light pseudoscalar mesons with
heavy baryons within the light cone QCD sum rules method. It is shown that
sextet--sextet, sextet--antitriplet and antitriplet--antitriplet transitions
are described by one universal invariant function for each class. A comparison
of our resul... | 1009.3658v2 |
2010-09-20 | Quantum Criticality in Einstein-Maxwell-Dilaton Gravity | We investigate the quantum Lifshitz criticality in a general background of
Einstein-Maxwell-Dilaton gravity. In particular, we demonstrate the existence
of critical point with dynamic critical exponent z by tuning a nonminimal
coupling to its critical value. We also study the effect of nonminimal coupling
and exponent ... | 1009.3952v1 |
2010-09-21 | Mueller Navelet jets, jet gap jets and anomalous $WWγγ$ couplings in $γ$-induced processes at the LHC | We describe two different important measurements to be performed at the LHC.
The Mueller Navelet jet and jet gap jet cross section represent a test of BFKL
dynamics and we perform a NLL calculation of these processes and compare it
with recent Tevatron measurements. The study of the $WW\gamma \gamma$ couplings
at the L... | 1009.4229v1 |
2010-09-22 | A superconducting qubit with Purcell protection and tunable coupling | We present a superconducting qubit for the circuit quantum electrodynamics
architecture that has a tunable coupling strength g. We show that this coupling
strength can be tuned from zero to values that are comparable with other
superconducting qubits. At g = 0 the qubit is in a decoherence free subspace
with respect to... | 1009.4470v1 |
2010-09-23 | Trouble Finding the Optimal AdS/QCD | In the bottom-up approach to AdS/QCD based on a five-dimensional gravity
dilaton action the exponential of the dilaton field is usually identified as
the strong or 't Hooft coupling. There is currently no model known which fits
the measurements of the running coupling and lattice results for pressure at
the same time. ... | 1009.4639v2 |
2010-09-23 | Strong-Coupling Theory of Counter-ions at Charged Plates | We present an analytical approach to the strong coupling regime of similarly
and highly charged plates in the presence of counter-ions. The procedure is
physically transparent and based on an exact expansion around the ground state
formed by the two-dimensional Wigner crystal of counter-ions. The one plate
problem is w... | 1009.4640v1 |
2010-09-24 | Gaussification of quantum states of traveling light beams in atomic memory | We propose and investigate a protocol for Gaussification of quantum states of
traveling light beams in an atomic quantum memory that couples to light via
quantum non-demolition interaction. The protocol relies on a periodic switching
between two different QND couplings and the total coupling strength scales only
logari... | 1009.4808v1 |
2023-09-21 | Lateral Solid Phase Epitaxy of Yttrium Iron Garnet | Solid phase epitaxy is a crystallization technique used to produce high
quality thin films. Lateral solid phase epitaxy furthermore enables the
realization of non-planar structures, which are interesting, e.g., in the field
of spintronics. Here, we demonstrate lateral solid phase epitaxy of yttrium
iron garnet over an ... | 2309.12002v1 |
2019-01-25 | Focused ion beam modification of non-local magnon-based transport in yttrium iron garnet/platinum heterostructures | We study the impact of Ga ion exposure on the local and non-local
magnetotransport response in heterostructures of the ferrimagnetic insulator
yttrium iron garnet and platinum. In particular, we cut the yttrium iron garnet
layer in between two electrically separated wires of platinum using a Ga ion
beam, and study the ... | 1901.08894v1 |
2017-12-27 | Finite temperature magnon spectra in yttrium iron garnet from mean field approach in tight-binding model | We study magnon spectra at finite temperature in yttrium iron garnet from
tight-binding model with nearest neighboring exchange interaction. The spin
reduction due to thermal magnon excitation are taken into account via the mean
field approximation to the local spin and found to be different at two sets of
iron atoms. ... | 1712.09512v1 |
2023-02-21 | Aluminium substituted yttrium iron garnet thin films with reduced Curie temperature | Magnetic garnets such as yttrium iron garnet (Y$_3$Fe$_5$O$_{12}$, YIG) are
widely used in spintronic and magnonic devices. Their magnetic and
magneto-optical properties can be modified over a wide range by tailoring their
chemical composition. Here, we report the successful growth of Al-substituted
yttrium iron garnet... | 2302.10517v2 |
2012-07-13 | Magnetic relaxation in bilayers of yttrium iron garnet/platinum due to the dynamic coupling at the interface | We show that in ferromagnetic (FM)/normal metal (NM) bilayers the dynamic
coupling at the interface transfers an additional magnetic relaxation from the
heavily damped motion of the conduction electron spins in the NM layer to the
FM spins. While the FM relaxation rates due to two-magnon scattering and spin
pumping dec... | 1207.3330v1 |
2013-02-28 | Spin mixing conductance at a well-controlled platinum/yttrium iron garnet interface | A platinum (Pt)/yttrium iron garnet (YIG) bilayer system with a
well-controlled interface has been developed; spin mixing conductance at the
Pt/YIG interface has been studied. Crystal perfection at the interface is
experimentally demonstrated to contribute to large spin mixing conductance. The
spin mixing conductance i... | 1302.7091v3 |
2013-09-09 | Induced magneto-transport properties at palladium/yttrium iron garnet interface | As a thin layer of palladium (Pd) is directly deposited on an yttrium iron
garnet or YIG (Y3Fe5O12) magnetic insulator film, Pd develops both low- and
high-field magneto-transport effects that are absent in standalone Pd or thick
Pd on YIG. While the low-field magnetoresistance peak of Pd tracks the coercive
field of t... | 1309.2213v1 |
2016-07-12 | Thermal spin dynamics of yttrium iron garnet | Yttrium Iron Garnet is the prototypical material used to study pure spin
currents. It is a complex material with 20 magnetic atoms in the unit cell.
Almost all theories and experimental analysis approximates this complicated
material to a simple ferromagnet with a single spin wave mode. We use the
method of atomistic s... | 1607.03263v1 |
2018-11-06 | Parametrically squeezed states of microwave magnons in yttrium iron garnet films | We demonstrate theoretically, and confirm experimentally, that nonlinear spin
waves excited in thin yttrium iron garnet films are good candidates for
squeezing vacuum quantum noise. The experimental demonstration is in the form
of a measurement of spin-wave induced modulation instability (IMI) conducted in
the classica... | 1811.02104v1 |
2002-02-10 | Stable Magnetostatic Solitons in Yttrium Iron Garnet Film Waveguides for Tilted in-Plane Magnetic Fields | The possibility of nonlinear pulses generation in Yttrium Iron Garnet thin
films for arbitrary direction between waveguide and applied static in-plane
magnetic field is considered. Up to now only the cases of in-plane magnetic
fields either perpendicular or parallel to waveguide direction have been
studied both experim... | 0202167v1 |
2020-11-17 | Non-local magnon-based transport in yttrium iron garnet/platinum heterostructures at high temperatures | The spin Hall effect in a heavy metal thin film allows to probe the magnetic
properties of an adjacent magnetic insulator via magnetotransport measurements.
Here, we investigate the magnetoresistive response of yttrium iron
garnet/platinum heterostructures from room temperature to beyond the Curie
temperature $T_\mathr... | 2011.08589v1 |
2022-03-08 | Enhancement of thermal spin pumping by orbital angular momentum of rare earth iron garnet | In a bilayer of ferromagnetic and non-magnetic metal, spin pumping can be
generated by a thermal gradient. The spin current generation depends on the
spin mixing conductance of the interface and the magnetic properties of the
ferromagnetic layer. Due to its low intrinsic damping, rare earth iron garnet
is often used fo... | 2203.03915v2 |
2014-02-26 | Magneto-elastic modes and lifetime of magnons in thin yttrium-iron garnet films | We calculate the effects of the spin-lattice coupling on the magnon spectrum
of thin ferromagnetic films consisting of the magnetic insulator yttrium-iron
garnet. The magnon-phonon hybridisation generates a characteristic minimum in
the spin dynamic structure factor which quantitatively agrees with recent
Brillouin lig... | 1402.6575v2 |
2016-02-24 | Spin Seebeck effect at microwave frequencies | We experimentally study the transient voltage response of yttrium iron
garnet/platinum bilayer samples subject to periodic heating up to gigahertz
frequencies. We observe an intrinsic cutoff frequency of the induced
thermopower voltage, which characteristically depends on the thickness of the
yttrium iron garnet film. ... | 1602.07442v2 |
2021-12-06 | Accumulation of magnetoelastic bosons in yttrium iron garnet: kinetic theory and wave vector resolved Brillouin light scattering | We derive and solve quantum kinetic equations describing the accumulation of
magnetoelastic bosons in an overpopulated magnon gas realized in a thin film of
the magnetic insulator yttrium iron garnet. We show that in the presence of a
magnon condensate, there is a non-equilibrium steady state in which incoherent
magnet... | 2112.03310v2 |
2020-09-30 | Electronic structure and finite temperature magnetism of yttrium iron garnet | Yttrium iron garnet is a complex ferrimagnetic insulator with 20 magnon modes
which is used extensively in fundamental experimental studies of magnetisation
dynamics. As a transition metal oxide with moderate gap (2.8 eV), yttrium iron
garnet requires a careful treatment of electronic correlation. We have applied
quasi... | 2009.14601v1 |
2018-07-02 | Picosecond acoustic excitation driven ultrafast magnetization dynamics in dielectric Bi-substituted yttrium iron garnet | Using femtosecond optical pulses, we have investigated the ultrafast
magnetization dynamics induced in a dielectric film of bismuth-substituted
yttrium iron garnet (Bi-YIG) buried below a thick Cu/Pt metallic bilayer. We
show that exciting the sample from Pt surface launches an acoustic strain pulse
propagating into th... | 1807.00610v1 |
2019-03-01 | Nanoscale X-Ray Imaging of Spin Dynamics in Yttrium Iron Garnet | Time-resolved scanning transmission x-ray microscopy (TR-STXM) has been used
for the direct imaging of spin wave dynamics in thin film yttrium iron garnet
(YIG) with spatial resolution in the sub 100 nm range. Application of this
x-ray transmission technique to single crystalline garnet films was achieved by
extracting... | 1903.00498v1 |
2018-03-15 | Synthetic antiferromagnetic coupling between ultra-thin insulating garnets | The use of magnetic insulators is attracting a lot of interest due to a rich
variety of spin-dependent phenomena with potential applications to spintronic
devices. Here we report ultra-thin yttrium iron garnet (YIG) / gadolinium iron
garnet (GdIG) insulating bilayers on gadolinium iron garnet (GGG). From spin
Hall magn... | 1803.05545v1 |
2021-09-24 | Damping in yttrium iron garnet film with an interface | 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... | 2109.12071v1 |
2021-07-14 | Ultrafast Optomagnonics in Ferrimagnetic Multi-Sublattice Garnets | This review discusses the ultrafast magnetization dynamics within the
gigahertz to terahertz frequency range in ferrimagnetic rare-earth iron garnets
with different substitutions. In these garnets, the roles of spin-orbit and
exchange interactions have been detected using femtosecond laser pulses via the
inverse Farada... | 2107.06597v1 |
2016-04-28 | Platinum/Yttrium Iron Garnet Inverted Structures for Spin Current Transport | 30-80 nm thick yttrium iron garnet (YIG) films are grown by pulsed laser
deposition on a 5 nm thick sputtered Pt atop gadolinium gallium garnet
substrate (GGG) (110). Upon post-growth rapid thermal annealing, single crystal
YIG(110) emerges as if it were epitaxially grown on GGG(110) despite the
presence of the interme... | 1604.08465v1 |
2019-01-08 | Fabrication of yttrium-iron-garnet/Pt multilayers for the longitudinal spin Seebeck effect | For longitudinal spin Seebeck effect (LSSE) devices, a multilayer structure
comprising ferromagnetic and nonmagnetic layers is expected to improve their
thermoelectric power. In this study, we developed the fabrication method for
alternately stacked yttrium-iron-garnet (YIG)/Pt multilayer films on a
gadolinium gallium ... | 1901.02129v1 |
2019-02-12 | Ultra-low damping in lift-off structured yttrium iron garnet thin films | We show that using maskless photolithography and the lift-off technique,
patterned yttrium iron garnet thin films possessing ultra-low Gilbert damping
can be accomplished. The films of 70 nm thickness were grown on (001)-oriented
gadolinium gallium garnet by means of pulsed laser deposition, and they exhibit
high cryst... | 1902.04605v1 |
2020-08-21 | Integration and characterization of micron-sized YIG structures with very low Gilbert damping on arbitrary substrates | We present a novel process that allows the transfer of monocrystalline
yttrium-iron-garnet microstructures onto virtually any kind of substrate. The
process is based on a recently developed method that allows the fabrication of
freestanding monocrystalline YIG bridges on gadolinium-gallium-garnet. Here the
bridges' spa... | 2008.09390v1 |
2021-12-14 | Robust perpendicular magnetic anisotropy in Ce substituted yttrium iron garnet epitaxial thin films | Cerium substituted yttrium iron garnet (Ce:YIG) epitaxial thin films are
prepared on gadolinium gallium garnet (GGG) substrate with pulsed laser
deposition (PLD). It is observed that the films grown on GGG(111) substrate
exhibit perpendicular magnetic anisotropy (PMA) as compared to films grown on
GGG(100) substrate. T... | 2112.07264v1 |
2017-02-10 | Relative weight of the inverse spin Hall and spin rectification effects for metallic Py,Fe/Pt and insulating YIG/Pt bilayers estimated by angular dependent spin pumping measurements | We quantify the relative weight of inverse spin Hall and spin rectification
effects occurring in RF-sputtered polycrystalline permalloy, molecular beam
epitaxy-grown epitaxial iron and liquid phase epitaxy-grown yttrium-iron-garnet
bilayer systems with different capping materials. To distinguish the spin
rectification ... | 1702.03119v1 |
2019-02-01 | Quantum thermodynamics of complex ferrimagnets | High-quality magnets such as yttrium iron garnet (YIG) are electrically
insulating and very complex. By implementing a quantum thermostat into
atomistic spin dynamics we compute YIG's key thermodynamic properties, viz. the
magnon power spectrum and specific heat, for a large temperature range. The
results differ (somet... | 1902.00449v1 |
2022-08-17 | Polarization-selective magneto-optical modulation | We study magneto-optical coupling in a ferrimagnetic sphere resonator made of
Yttrium iron garnet. We find that the resonator can be operated in the telecom
band as a polarization-selective optical modulator. Intermodulation gain can be
employed in the nonlinear regime for amplification. | 2208.08148v2 |
2022-10-08 | One Analytical Approach of Rashba-Edelstein Magnetoresistance in 2D Materials | We study analytically the Rashba-Edelstein magnetoresistance (REMR) in a
structure made from an insulator ferromagnet, such as yttrium iron garnet
(YIG), and a 2D material (2DM) with direct and inverse Rashba-Edelstein
effects, such as SLG and MoS$_2$. Our results represent an efficient way of
analyzing the Rashba-Edel... | 2210.03854v1 |
2024-01-17 | A Distributed Magnetostatic Resonator | This work reports the design, fabrication, and characterization of
coupling-enhanced magnetostatic forward volume wave resonators with significant
spur suppression. The fabrication is based on surface micro-machining of
yttrium iron garnet (YIG) film on a gadolinium gallium garnet (GGG) substrate
with thick gold transd... | 2401.08911v1 |
2019-10-07 | Chiral spin-wave velocities induced by all-garnet interfacial Dzyaloshinskii-Moriya interaction in ultrathin yttrium iron garnet films | Spin waves can probe the Dzyaloshinskii-Moriya interaction (DMI) which gives
rise to topological spin textures, such as skyrmions. However, the DMI has not
yet been reported in yttrium iron garnet (YIG) with arguably the lowest damping
for spin waves. In this work, we experimentally evidence the interfacial DMI in
a 7~... | 1910.02599v2 |
2020-12-01 | Magnon hybridization in ferrimagnetic heterostructures | We study magnon hybridization in a ferrimagnetic heterostructure consisting
of ultrathin gadolinium iron garnet and yttrium iron garnet layers and show the
localized and extended spatial profiles of the magnon modes with different
polarizations. These modes are expected to have distinct thermal excitation
properties in... | 2012.00576v1 |
2008-10-15 | Magnetic susceptibility and magnetization fluctuation measurements of mixed Gadolinium-Yttrium Iron Garnets | We study the magnetic properties of Gadolinium-Yttrium Iron Garnet
($\text{Gd}_{x}\text{Y}_{3-x}\text{Fe}_5\text{0}_{12}$, $x=3,1.8$) ferrite
ceramics. The complex initial permeability is measured in the temperature range
2 K to 295 K at frequency of 1 kHz, and in the frequency range 100 Hz to 200
MHz at temperatures 4... | 0810.2770v1 |
2012-08-03 | Field-dependence of magnon decay in yttrium iron garnet thin films | We discuss threshold field-dependence of the decay rate of the uniform magnon
mode in yttrium iron garnet (YIG) thin films. We demonstrate that decays must
cease to exist in YIG films of thickness less than 1 \mu m, the lengthscale
defined by the exchange length. We show that due to the symmetry of the
three-magnon cou... | 1208.0831v1 |
2013-01-15 | Spin-Hall Magnetoresistance in Platinum on Yttrium Iron Garnet: Dependence on platinum thickness and in-plane/out-of-plane magnetization | The occurrence of Spin-Hall Magnetoresistance (SMR) in platinum (Pt) on top
of yttrium iron garnet (YIG) has been investigated, for both in-plane and
out-of-plane applied magnetic fields and for different Pt thicknesses [3, 4, 8
and 35nm]. Our experiments show that the SMR signal directly depends on the
in-plane and ou... | 1301.3266v2 |
2013-02-27 | Optimization of the yttrium iron garnet/platinum interface for spin pumping-based applications | The dependence of the spin pumping efficiency and the spin mixing conductance
on the surface processing of yttrium iron garnet (YIG) before the platinum (Pt)
deposition has been investigated quantitatively. The ferromagnetic resonance
driven spin pumping injects a spin polarized current into the Pt layer, which
is tran... | 1302.6697v1 |
2013-11-25 | Spin-wave excitation and propagation in microstructured waveguides of yttrium iron garnet (YIG)/Pt bilayers | We present an experimental study of spin-wave excitation and propagation in
microstructured waveguides patterned from a 100 nm thick yttrium iron garnet
(YIG)/platinum (Pt) bilayer. The life time of the spin waves is found to be
more than an order of magnitude higher than in comparably sized metallic
structures despite... | 1311.6305v1 |
2014-10-02 | Simultaneous detection of the spin-Hall magnetoresistance and the spin-Seebeck effect in Platinum and Tantalum on Yttrium Iron Garnet | The spin-Seebeck effect (SSE) in platinum (Pt) and tantalum (Ta) on yttrium
iron garnet (YIG) has been investigated by both externally heating the sample
(using an on-chip Pt heater on top of the device) as well as by current-induced
heating. For SSE measurements, external heating is the most common method to
obtain cl... | 1410.0551v2 |
2015-07-07 | Rayleigh-Jeans condensation of pumped magnons in thin film ferromagnets | We show that the formation of a magnon condensate in thin ferromagnetic films
can be explained within the framework of a classical stochastic non-Markovian
Landau-Lifshitz-Gilbert equation where the properties of the random magnetic
field and the dissipation are determined by the underlying phonon dynamics. We
have num... | 1507.01717v2 |
2016-02-04 | Investigation of the unidirectional spin heat conveyer effect in a 200nm thin Yttrium Iron Garnet film | We have investigated the unidirectional spin wave heat conveyer effect in
sub-micron thick yttrium iron garnet (YIG) films using lock-in thermography
(LIT). Although the effect is small in thin layers this technique allows us to
observe asymmetric heat transport by magnons which leads to asymmetric
temperature profiles... | 1602.01662v1 |
2016-12-07 | Gilbert damping of magnetostatic modes in a yttrium iron garnet sphere | The magnetostatic mode (MSM) spectrum of a 300$\mu$m diameter single
crystalline sphere of yttrium iron garnet is investigated using broadband
ferromagnetic resonance (FMR). The individual MSMs are identified via their
characteristic dispersion relations and the corresponding mode number tuples
$(nmr)$ are assigned. Ta... | 1612.02360v1 |
2016-12-31 | First-Principles Study of Exchange Interactions of Yttrium Iron Garnet | Yttrium Iron Garnet is the ubiquitous magnetic insulator used for studying
pure spin currents. The exchange constants reported in the literature vary
considerably between different experiments and fitting procedures. Here we
calculate them from first-principles. The local Coulomb correction (U - J) of
density functiona... | 1701.00110v1 |
2017-01-03 | Magnetic control of Goos-Hanchen shifts in a yttrium-iron-garnet film | We investigate the Goos-Hanchen (G-H) shifts reflected and transmitted by a
yttrium-iron-garnet (YIG) film for both normal and oblique incidence. It is
found that the nonreciprocity effect of the MO material does not only result in
a nonvanishing reflected shift at normal incidence, but also leads to a
slab-thickness-i... | 1701.01462v2 |
2017-01-31 | Lateral transport properties of thermally excited magnons in yttrium iron garnet films | Spin information carried by magnons is attractive for computing technology
and the development of magnon-based computing circuits is of great interest.
However, magnon transport in insulators has been challenging, different from
the clear physical picture for spin transport in conductors. Here we
investigate the latera... | 1701.08932v1 |
2017-05-18 | The Final Chapter In The Saga Of YIG | The magnetic insulator Yttrium Iron Garnet can be grown with exceptional
quality, has a ferrimagnetic transition temperature of nearly 600 K, and is
used in microwave and spintronic devices that can operate at room temperature.
The most accurate prior measurements of the magnon spectrum date back nearly 40
years, but c... | 1705.06594v1 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.