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2018-03-22 | Transient dynamics of strongly coupled spin vortex pairs: effects of anharmonicity and resonant excitation on inertial switching | Spin vortices in magnetic nanopillars are used as GHz oscillators, with
frequency however essentially fixed in fabrication. We demonstrate a model
system of a two-vortex nanopillar, in which the resonance frequency can be
changed by an order of magnitude, without using high dc magnetic fields. The
effect is due to swit... | 1803.08413v1 |
2018-02-22 | Chaotic dynamics in spin-vortex pairs | We report on spin-vortex pair dynamics measured at temperatures low enough to
suppress stochastic core motion, thereby uncovering the highly non-linear
intrinsic dynamics of the system. Our analysis shows that the decoupling of the
two vortex cores is resonant and can be enhanced by dynamic chaos. We detail
the regions... | 1802.08271v1 |
2020-04-01 | Interaction-induced current asymmetries in resonant transport through interacting quantum-dot spin valves revealed by iterative summation of path integrals | Resonant tunneling of electrons between two ferromagnets and a quantum dot in
the presence of an externally applied magnetic field reveals a strong gate
dependence in the linear and nonlinear bias regime. This gate dependence
originates from the interplay between Coulomb interactions and spin-dependent
hybridization be... | 2004.00432v1 |
2016-03-17 | Theoretical interpretation of a spin-two diphoton excess | A spin-two resonance would have couplings to the SM, suppressed via
higher-dimensional operators. Therefore, a sizeable cross-section would
indicate that the scale of additional new phenomena cannot be too far above the
750 GeV mark. Below I present some theoretical arguments to place the resonance
in a wider framework... | 1603.05574v1 |
2021-04-28 | Simulation of multiple-quantum NMR dynamics of spin dimer on quantum computer | Dymanics of spin dimers in multiple quantum NMR experiment is studied on the
5-qubit superconducting quantum processor of IBM {Quantum Experience} for the
both {pure} ground and thermodynamic equilibrium (mixed) initial states. The
work can be considered as a first step towards an application of quantum
computers to so... | 2104.13777v1 |
2021-08-09 | Temperature Measurement Based on Electron Spin Resonance of Magnetic Nanoparticles | Magnetic nanoparticles (MNPs) have excellent magnetic-temperature
characteristic. However, current temperature measurement based on MNPs is
interfered by concentration. Utilizing the electron spin resonance (ESR), we
propose a highly sensitive temperature measurement method without concentration
coupling. The anisotrop... | 2108.03797v2 |
2003-12-30 | Direct perturbation theory on the shift of Electron Spin Resonance | We formulate a direct and systematic perturbation theory on the shift of the
main paramagnetic peak in Electron Spin Resonance, and derive a general
expression up to second order. It is applied to one-dimensional XXZ and
transverse Ising models in the high field limit, to obtain explicit results
including the polarizat... | 0312698v2 |
2019-07-29 | Ground state cooling of nanomechanical resonators by electron transport | We discuss two theoretical proposals for controlling the nonequilibrium
steady state of nanomechanical resonators using quantum electronic transport.
Specifically?, we analyse two approaches to achieve the ground-state cooling of
the mechanical vibration coupled to a quantum dot embedded between (i)
spin-polarised cont... | 1907.12397v1 |
2019-08-03 | Resonant inelastic x-ray scattering study of $α$-RuCl$_3$: a progress report | Ru M$_3$-edge resonant inelastic x-ray scattering (RIXS) measurements of
RuCl$_3$ with 27 meV resolution reveals a spin-orbit exciton without noticeable
splitting. We extract values for the spin-orbit coupling constant
($\lambda=154\pm2$ meV) and trigonal distortion field energy
($\left|\Delta\right|<65$ meV) which sup... | 1908.01190v1 |
2020-07-10 | The determination of the spin and parity of a vector-vector system | We present a construction of the reaction amplitude for the inclusive
production of a resonance decaying to a pair of identical vector particles such
as $J/\psi J/\psi$, $\rho\rho$, $\phi\phi$. The method provides the possibility
of determining the spin and parity of a resonance in a model-independent way.
The methodol... | 2007.05501v2 |
2021-05-03 | Anisotropy-Exchange Resonance as a Mechanism for Entangled State Switching | We explore the three-particle spin model of an $S_{1}=\frac{1}{2}$ particle
(e.g. a stationary electron) interacting with two spin-coupled $S_{\text{2,3}}$
particles with exchange coupling and magnetic anisotropy. We find that in the
case of $S_{2,3}=1$ particles, the coupled particle entanglement states can be
prepare... | 2105.01126v1 |
2021-05-05 | Zero-field 29Si nuclear magnetic resonance signature of helimagnons in MnSi | The low temperature dependence of the nuclear magnetic resonance frequency
and spin-lattice relaxation rate measured in the chiral magnet MnSi by Yasuoka
and coworkers [J. Phys. Soc. Jpn. 85, 073701 (2016)] is interpreted in terms of
helimagnon excitations. The theoretically predicted gapless and anisotropic
dispersion... | 2105.02194v1 |
2022-01-09 | Properties of Gamow-Teller and charge-exchange giant spin-monopole resonances in medium-heavy closed-shell parent nuclei: a semi-microscopic description | The basic version of the semi-microscopic particle-hole dispersive optical
model is implemented to describe main properties of the Gamow-Teller and
charge-exchange giant spin-monopole resonances in medium-heavy closed-shell
parent nuclei. Calculation results obtained for $^{48}Ca$, $^{90}Zr$,
$^{132}Sn$, and $^{208}Pb$... | 2201.02965v2 |
2022-06-11 | Multi-state interferometric measurement of nonlinear AC Stark shift | We demonstrate measurement of quadratic AC Stark shifts between Zeeman
sublevels in an $^{87}$Rb Bose--Einstein condensate using a multi-state atomic
interferometer. The interferometer can detect a quadratic shift without being
affected by relatively large state-independent shifts, thereby improving the
measurement pre... | 2206.05465v1 |
2023-03-14 | Magnetic and Structural Properties of 5d Osmate Double Perovskites Probed by Nuclear Magnetic Resonance | The combined effect of electronic correlation and strong
spin-orbit-coupling(SOC) can give rise to a variety of exotic quantum phases.
Double perovskites provide a simple structure to study the spin-orbit-lattice
entangled states. In this thesis, focusing on the 5d osmate double perovskite
system, we conduct a combinat... | 2303.07573v1 |
2023-09-27 | Regulating spin dynamics in magnetic nanomaterials | Magnetic nanomaterials can be used in the construction of devices for
information processing and memory storage. For this purpose, they have to enjoy
two contradictory properties, from one side being able of keeping for long time
magnetization frozen, hence information stored, and from the other side
allowing for quick... | 2309.15568v1 |
2024-03-27 | The effect of cutoff dependence on heavy quark spin symmetry partners | Hadron spectroscopy is revealed by observing heavy resonances. Among various
explanations of the internal structure of these hadronic states, hadronic
molecules play a unique role. For hadronic molecules, which are associated with
meson-meson or meson-baryon interactions, the $\Lambda$ cutoff is a significant
factor in... | 2403.18633v1 |
1992-04-10 | Spin Singlet Quantum Hall Effect and Nonabelian Landau-Ginzburg Theory | We show that the Halperin-Haldane SQHE wave function can be written in the
form of a product of a wave function for charged semions in a magnetic field
and a wave function for the Chiral Spin Liquid of neutral spin-$\12$ semions.
We introduce field-theoretic model in which the electron operators are
factorized in terms... | 9204002v1 |
1994-07-08 | $J_1-J_2$ Quantum Heisenberg Antiferromagnet: Improved Spin-Wave Theories Versus Exact-Diagonalization Data | We reconsider the results cocerning the extreme-quantum $S=1/2$
square-lattice Heisenberg antiferromagnet with frustrating diagonal couplings
($J_1-J_2$ model) drawn from a comparison with exact-diagonalization data. A
combined approach using also some intrinsic features of the self-consistent
spin-wave theory leads to... | 9407042v1 |
1996-08-21 | The effect of magnetic dipolar interactions on the interchain spin wave dispersion in CsNiF_3 | Inelastic neutron scattering measurements were performed on the ferromagnetic
chain system CsNiF_3 in the collinear antiferromagnetic ordered state below T_N
= 2.67K. The measured spin wave dispersion was found to be in good agreement
with linear spin wave theory including dipolar interactions. The additional
dipole te... | 9608085v1 |
1999-03-15 | Interplay of spin density wave and superconductivity with different pairing symmetry | A model study for the coexistence of the spin density wave and
superconductivity is presented. With reference to the recent angle resolved
photo emmission experimental data in high T_c cuprates, presence of the nested
pieces of bands is assumed. The single band Hubbard model, therefore, when
treated within the Hatree-F... | 9903234v1 |
2001-02-04 | Spin wave specific heat in quasiperiodic Fibonacci structures | The energy spectra of a variety of collective modes on quasiperiodic
structures exhibit a complex fractal profile. Among the modes that have
attracted particular attention in this context, are the spin wave spectra of
quasiperiodic magnetic multilayers that obey a substitutional sequence of the
Fibonacci type. They are... | 0102046v1 |
2001-02-07 | Interplay between spin-density-wave and superconducting states in quasi-one-dimensional conductors | The interference between spin-density-wave and superconducting instabilities
in quasi-one-dimensional correlated metals is analyzed using the
renormalization group method. At the one-loop level, we show how the
interference leads to a continuous crossover from a spin-density-wave state to
unconventional superconductivi... | 0102139v1 |
2001-06-18 | Low-frequency dynamics of disordered XY spin chains and pinned density waves: from localized spin waves to soliton tunneling | A long-standing problem of the low-energy dynamics of a disordered XY spin
chain is re-examined. The case of a rigid chain is studied where the quantum
effects can be treated quasiclassically. It is shown that as the frequency
decreases, the relevant excitations change from localized spin waves to
two-level systems to ... | 0106350v3 |
2001-10-16 | Analytical and numerical study of hardcore bosons in two dimensions | We study various properties of bosons in two dimensions interacting only via
onsite hardcore repulsion. In particular, we use the lattice spin-wave
approximation to calculate the ground state energy, the density, the condensate
density and the superfluid density in terms of the chemical potential. We also
calculate the... | 0110314v1 |
2002-02-02 | Spin Wave Propagation in the Domain State of a Random Field Magnet | Inelastic neutron scattering with high wave-vector resolution has
characterized the propagation of transverse spin wave modes near the
antiferromagnetic zone center in the metastable domain state of a random field
Ising magnet. A well-defined, long wavelength excitation is observed despite
the absence of long-range mag... | 0202038v2 |
2005-04-04 | Theory of Spin-Wave Frequency Gaps in 3D Magnonic Crystals. Application to Manganites | his study is an investigation of spin wave spectrum in macrostructures
composed of two ferromagnetic materials and showing a 3D periodicity: spherical
ferromagnetic grains disposed in the nodes of a 3D crystal lattice are embedded
in a matrix with different ferromagnetic properties. Frequency ranges forbidden
to spin w... | 0504073v1 |
2005-05-16 | Spin Waves in a Periodically Layered Magnetic Nanowire | We report a simple theoretical derivation of the spectrum and damping of spin
waves in a cylindrical periodically structured magnetic nanowire (cylindrical
magnonic crystal) in the "effective medium" approximation. The dependence of
the "effective" magnetic parameters upon the individual layer parameters is
shown to be... | 0505382v1 |
2005-11-19 | Measurement of spin waves and activation volumes in superparamagnetic Fe films on GaAs(100) | Spin wave frequencies are observed in ultra-thin Fe/GaAs(100) films at
temperatures where the spontaneous zero field magnetization is zero. The films
exhibit good cyrstalline structure, and the effect of magnetic anisotropies is
apparent even though no zero field spin wave energy gap exists. An analysis is
given in ter... | 0511482v1 |
1992-02-08 | Spin Singlet Quantum Hall Effect and Nonabelian Landau-Ginzburg Theory | In this paper we present a theory of Singlet Quantum Hall Effect (SQHE). We
show that the Halperin-Haldane SQHE wave function can be written in the form of
a product of a wave function for charged semions in a magnetic field and a wave
function for the Chiral Spin Liquid of neutral spin-$\12$ semions. We introduce
fiel... | 9202029v1 |
2006-11-10 | Eikonal Approximation in AdS/CFT: Conformal Partial Waves and Finite N Four-Point Functions | We introduce the impact-parameter representation for conformal field theory
correlators of the form A ~ < O_1 O_2 O_1 O_2 >. This representation is
appropriate in the eikonal kinematical regime, and approximates the conformal
partial-wave decomposition in the limit of large spin and dimension of the
exchanged primary. ... | 0611123v1 |
2005-09-30 | Macroscopic quantum information channel via the polarization-sensitive interaction between the light and spin subsystems | We discuss the quantum information channel, which is based on coherent and
polarization sensitive interaction of light and atomic spin waves. We show that
the joint Heisenberg dynamics of the polarization Stokes components of light
and of the angular momenta of atoms has a wave nature and can be properly
described in t... | 0509220v1 |
2007-04-05 | Partially disordered state near ferromagnetic transition in MnSi | The polarized neutron scattering in helimagnetic MnSi at low $T$ reveals
existence of a partially disordered chiral state at ambient pressure in the
magnetic field applied along $<111>$ axis below the first order transition to
the non-chiral ferromagnetic state. This unexpected phenomenon is explained by
the analysis o... | 0704.0683v1 |
2007-07-09 | Comment on "Multiferroicity Induced by Dislocated Spin-Density Waves" | I show that the claims in Phys. Rev. Lett. 98, 257602 by Betouras et al
concerning YMn2O5 are incorect. | 0707.1327v1 |
2007-11-16 | Spin waves and local magnetizations on the Penrose tiling | We consider a Heisenberg antiferromagnet on the Penrose tiling, a
quasiperiodic system having an inhomogeneous Neel-ordered ground state. Spin
wave energies and wavefunctions are studied in the linear spin wave
approximation. A linear dispersion law is found at low energies, as in other
bipartite antiferromagnets, with... | 0711.2670v3 |
2007-12-18 | Dynamics Of Proton Spin : Role Of $qqq$ Force | The analytic structure of the $qqq$ wave function, obtained recently in the
high momentum regime of QCD, is employed for the formulation of baryonic
transition amplitudes via quark loops. A new aspect of this study is the role
of a direct ($Y$-shaped, Mercedes-Benz type) $qqq$ force in generating the
$qqq$ wave functio... | 0712.2896v1 |
2008-04-04 | Modification of the thermal spin-wave spectrum in a Ni81Fe19 stripe by a domain wall | The thermal spin-wave distribution in a Ni81Fe19 stripe with an asymmetric
transverse domain wall has been investigated using Brillouin light scattering
microscopy. Clear evidence has been found that the existence of the domain wall
influences the spin-wave distribution of the thermal modes. The thermal
spin-wave modes... | 0804.0734v2 |
2008-11-03 | Dispersion in magnetostatic CoTaZr spin wave-guides | Magnetostatic spin wave dispersion and loss are measured in micron scale spin
wave-guides in ferromagnetic, metallic CoTaZr. Results are in good agreement
with model calculations of spin wave dispersion and up to three different modes
are identified. Attenuation lengths of the order of 3 microns are several of
orders o... | 0811.0350v2 |
2009-01-19 | Chiral asymmetry of the spin-wave spectra in ultrathin magnetic films | We raise the possibility that the chiral degeneracy of the magnons in
ultrathin films can be lifted due to the presence of Dzyaloshinskii-Moriya
interactions. By using simple symmetry arguments, we discuss under which
conditions such a chiral asymmetry occurs. We then perform relativistic first
principles calculations ... | 0901.2671v1 |
2009-02-13 | Anomalous spin-waves and the commensurate-incommensurate magnetic phase transition in LiNiPO4 | Detailed spin-wave spectra of magneto-electric LiNiPO4 have been measured by
neutron scattering at low temperatures in the commensurate (C)
antiferromagnetic (AF) phase with ordering temperature 20.8 K. An anomalous
low-energy mode is observed at the modulation vector of the incommensurate (IC)
AF phase appearing above... | 0902.2288v1 |
2009-06-19 | Bounding the mass of the graviton with gravitational waves: Effect of spin precessions in massive black hole binaries | Observations of gravitational waves from massive binary black hole systems at
cosmological distances can be used to search for a dependence of the speed of
propagation of the waves on wavelength, and thereby to bound the mass of a
hypothetical graviton. We study the effects of precessions of the spins of the
black hole... | 0906.3602v2 |
2009-07-22 | Fluctuating spin density waves in metals | Recent work has used a U(1) gauge theory to describe the physics of Fermi
pockets in the presence of fluctuating spin density wave order. We generalize
this theory to an arbitrary band structure and ordering wavevector. The
transition to the large Fermi surface state, without pockets induced by local
spin density wave ... | 0907.3732v2 |
2009-08-17 | Demonstration of atomic frequency comb memory for light with spin-wave storage | We present a light-storage experiment in a praseodymium-doped crystal where
the light is mapped onto an inhomogeneously broadened optical transition shaped
into an atomic frequency comb. After absorption of the light the optical
excitation is converted into a spin-wave excitation by a control pulse. A
second control pu... | 0908.2309v2 |
2009-10-04 | Zero temperature phases of the frustrated J1-J2 antiferromagnetic spin-1/2 Heisenberg model on a simple cubic lattice | At zero temperature magnetic phases of the quantum spin-1/2 Heisenberg
antiferromagnet on a simple cubic lattice with competing first and second
neighbor exchanges (J1 and J2) is investigated using the non-linear spin wave
theory. We find existence of two phases: a two sublattice Neel phase for small
J2 (AF), and a col... | 0910.0638v2 |
2009-11-10 | Spin-wave propagation in a microstructured magnonic crystal | Transmission of microwave spin waves through a microstructured magnonic
crystal in the form of a permalloy waveguide of a periodically varying width
was studied experimentally and theoretically. The spin wave characteristics
were measured by spatially-resolved Brillouin light scattering microscopy. A
rejection frequenc... | 0911.1920v1 |
2010-03-31 | Magnonic Crystal with Two-Dimensional Periodicity as a Waveguide for Spin Waves | We describe a simple method of including dissipation in the spin wave band
structure of a periodic ferromagnetic composite, by solving the Landau-Lifshitz
equation for the magnetization with the Gilbert damping term. We use this
approach to calculate the band structure of square and triangular arrays of Ni
nanocylinder... | 1003.6092v1 |
2010-06-26 | Spin-Orbit Coupled Spinor Bose-Einstein Condensates | An effective spin-orbit coupling can be generated in cold atom system by
engineering atom-light interactions. In this letter we study spin-1/2 and
spin-1 Bose-Einstein condensates with Rashba spin-orbit coupling, and find that
the condensate wave function will develop non-trivial structures. From
numerical simulation w... | 1006.5148v4 |
2010-07-03 | Second-order quantum corrections for the frustrated, spatially anisotropic, spin-1/2 Heisenberg antiferromagnet on a square lattice | The effects of quantum fluctuations due to directional anisotropy and
frustration between nearest neighbors and next-nearest neighbors of the quantum
spin-1/2 Heisenberg antiferromagnet on a square lattice are investigated using
spin-wave expansion. We have calculated the spin-wave energy dispersion in the
entire Brill... | 1007.0502v4 |
2010-09-28 | The magnonic limit of domain wall propagation in ferromagnetic nanotubes | We report a study on the field-driven propagation of vortex-like domain walls
in ferromagnetic nanotubes. This particular geometry gives rise to a special
feature of the static wall configuration, which significantly influences its
dynamics. Unlike domain walls in flat strips, the left-right symmetry of domain
wall pro... | 1009.5552v1 |
2011-07-07 | Method to characterize spinons as emergent elementary particles | We develop a technique to directly study spinons (emergent spin S = 1/2
particles) in quantum spin models in any number of dimensions. The size of a
spinon wave packet and of a bound pair (a triplon) are defined in terms of
wave-function overlaps that can be evaluated by quantum Monte Carlo
simulations. We show that th... | 1107.1439v2 |
2011-08-16 | Magnetic rogue wave in a perpendicular anisotropic ferromagnetic nanowire with spin-transfer torque | We present the current controlled motion of dynamic soliton embedded in spin
wave background in ferromagnetic nanowire. With the stronger breather character
we get the novel magnetic rogue wave and clarify its formation mechanism. The
generation of magnetic rogue wave is mainly arose from the accumulation of
energy and... | 1108.3252v2 |
2011-10-26 | SpinWaves in Ferromagnetic Dots 2D Honeycomb Lattice Stripes | In this work, the spin wave calculations were carried out using the
Heisenberg Hamiltonian to study the allowed spin waves of zigzag and armchair
edged stripes for ferromagnetic nanodots arrayed in a 2D honeycomb lattice
\cite{Selim2011}. The Hamiltonian is used to construct the $\mathbf{E}$ matrix
which encodes the ex... | 1110.5716v1 |
2011-12-19 | About spin electromagnetic wave-particle with ring singularity | An axisymmetric space-localized solution of nonlinear electrodynamics is
considered as massive charged particle with spin and magnetic moment. The
appropriate solution for nonlinear electrodynamics with ring singularity is
investigated. In view of this problem the system of toroidal waves in linear
electrodynamics is c... | 1112.4437v1 |
2012-04-16 | Topological chiral magnonic edge mode in a magnonic crystal | Topological phases have been explored in various fields in physics such as
spintronics, photonics, liquid helium, correlated electron system and
cold-atomic system. This leads to the recent foundation of emerging materials
such as topological band insulators, topological photonic crystals and
topological superconductor... | 1204.3349v3 |
2012-11-20 | Microscopic magnetic structuring of a spin-wave waveguide by ion implantation in a Ni(81)Fe(19) layer | We investigate the spin-wave excitation in microscopic waveguides fabricated
by localized Cr+ ion implantation in a ferromagnetic Ni(81)Fe(19) film. We
demonstrate that spin-wave waveguides can be conveniently made by this
technique. The magnetic patterning technique yields an increased damping and a
reduction in satur... | 1211.4786v1 |
2013-01-29 | Single-photon-level optical storage in a solid-state spin-wave memory | A long-lived quantum memory is a firm requirement for implementing a quantum
repeater scheme. Recent progress in solid-state rare-earth-ion-doped systems
justifies their status as very strong candidates for such systems. Nonetheless
an optical memory based on spin-wave storage at the single-photon-level has not
been sh... | 1301.6924v1 |
2013-04-26 | A micro-structured ion-implanted magnonic crystal | We investigate spin-wave propagation in a microstructured magnonic-crystal
waveguide fabricated by localized ion implantation. The irradiation caused a
periodic variation in the saturation magnetization along the waveguide. As a
consequence, the spin-wave transmission spectrum exhibits a set of frequency
bands, where s... | 1304.7122v1 |
2013-05-21 | Effect of Hole Shape on Spin-Wave Band Structure in One-Dimensional Magnonic Antidot Waveguide | We present the possibility of tuning the spin-wave band structure,
particularly the bandgaps in a nanoscale magnonic antidot waveguide by varying
the shape of the antidots. The effects of changing the shape of the antidots on
the spin-wave dispersion relation in a waveguide have been carefully monitored.
We interpret t... | 1305.4812v2 |
2013-05-28 | Magnonic band gaps in waveguides with a periodic variation of the saturation magnetization | We present a micromagnetic analysis of spin-wave propagation in a magnonic
crystal realized as a permalloy spin-wave waveguide with a spatial periodical
variation of its saturation magnetization. Frequency band gaps were clearly
observed in the spin-wave transmission spectra and their origin is traced back
to an overla... | 1305.6619v1 |
2014-05-04 | Charge and Spin Density Waves observed through their spatial fluctuations by coherent and simultaneous X-ray diffraction | Spatial uctuations of spin density wave (SDW) and charge density wave (CDW)
in chromium have been compared by combining coherent and simultaneous X-ray
diffraction experiments. Despite their close relationship, spatial fluctuations
of the spin and of the charge density waves display a very different behavior:
the satel... | 1405.0738v2 |
2014-11-14 | Lifetimes of Magnons in Two-Dimensional Diluted Ferromagnetic Systems | Spin dynamics in low dimensional magnetic systems has been of fundamental
importance for a long time and has currently received an impetus owing to the
emerging field of nanoelectronics. Knowledge of the spin wave lifetimes, in
particular, can be favorable for future potential applications. We investigate
the low-tempe... | 1411.3876v2 |
2014-11-26 | Pattern Recognition with Magnonic Holographic Memory Device | In this work, we present experimental data demonstrating the possibility of
using magnonic holographic devices for pattern recognition. The prototype
eight-terminal device consists of a magnetic matrix with micro-antennas placed
on the periphery of the matrix to excite and detect spin waves. The principle
of operation ... | 1411.7082v1 |
2015-01-16 | A solid state spin-wave quantum memory for time-bin qubits | We demonstrate the first solid-state spin-wave optical quantum memory with
on-demand read-out. Using the full atomic frequency comb scheme in a \PrYSO
crystal, we store weak coherent pulses at the single-photon level with a signal
to noise ratio $> 10$. Narrow-band spectral filtering based on spectral hole
burning in a... | 1501.03980v2 |
2015-05-05 | Three-dimensional Character of the Magnetization Dynamics in Magnetic Vortex Structures - Hybridization of Flexure Gyromodes with Spin Waves | Three-dimensional linear spin-wave eigenmodes of a Permalloy disk having
finite thickness are studied by micromagnetic simulations based on the
Landau-Lifshitz-Gilbert equation. The eigenmodes found in the simulations are
interpreted as linear superpositions (hybridizations) of 'approximate'
three-dimensional eigenmode... | 1505.01148v2 |
2015-06-12 | Criticality at the Haldane-insulator charge-density-wave quantum phase transition | Exploiting the entanglement concept within a matrix-product-state based
infinite density-matrix renormalization group approach, we show that the
spin-density-wave and bond-order-wave ground states of the one-dimensional
half-filled extended Hubbard model give way to a symmetry-protected topological
Haldane state in cas... | 1506.04003v2 |
2015-06-17 | Local spin-density-wave order inside vortex cores in multiband superconductors | Coexistence of antiferromagnetic order with superconductivity in many
families of newly discovered iron-based superconductors has renewed interest to
this old problem. Due to competition between the two types of order, one can
expect appearance of the antiferromagnetism inside the cores of the vortices
generated by the... | 1506.05440v2 |
2015-12-04 | Polarization dependence of nonlinear wave mixing of spinor polaritons in semiconductor microcavities | The pseudo-spin dynamics of propagating exciton-polaritons in semiconductor
microcavities are known to be strongly influenced by TE-TM splitting. As a
vivid consequence, in the Rayleigh scattering regime, the TE-TM splitting gives
rise to the optical spin Hall effect (OSHE). Much less is known about its role
in the non... | 1512.01378v1 |
2016-02-03 | Two-dimensional dispersion of magnetostatic volume spin waves | The dipolar (magnetostatic) interaction dominates the behavior of spin waves
in magnetic films in the long-wavelength regime. In an in-plane magnetized
film, volume modes exist with a negative group velocity (backward volume
magnetostatic spin waves), in addition to the forward surface-localized mode
(Damon-Eshbach). I... | 1602.01362v1 |
2016-04-26 | Modulated spin helicity stabilized by incommensurate orbital density waves in a quadruple perovskite manganite | Through a combination of neutron diffraction and Landau theory we describe
the spin ordering in the ground state of the quadruple perovskite manganite
CaMn7O12 - a magnetic multiferroic supporting an incommensurate orbital density
wave that onsets above the magnetic ordering temperature, TN1 = 90 K. The
multi-k magneti... | 1604.07747v1 |
2016-07-05 | Non-classical correlations between a C-band telecom photon and a stored spin-wave | Future ground-based quantum information networks will likely use single
photons transmitted through optical fibers to entangle individual network
nodes. To extend communication distances and overcome limitations due to photon
absorption in fibers the concept of quantum repeaters has been proposed. For
that purpose, it ... | 1607.01350v1 |
2016-09-27 | Sewing Greenberger-Horne-Zeilinger states with a quantum zipper | A mechanism of a chiral spin wave rotation is introduced to systematically
generate mesoscopic Greenberger-Horne-Zeilinger states. | 1609.08589v1 |
2017-08-21 | Micromagnetic simulations of magnetoelastic spin wave excitation in scaled magnetic waveguides | We study the excitation of spin waves in scaled magnetic waveguides using the
magnetoelastic effect. In uniformly magnetized systems, normal strains parallel
or perpendicular to the magnetization direction do not lead to spin wave
excitation since the magnetoelastic torque is zero. Using micromagnetic
simulations, we s... | 1708.06428v1 |
2018-03-26 | Tunable Snell's law for spin waves in heterochiral magnetic films | Thin ferromagnetic films with an interfacially induced DMI exhibit nontrivial
asymmetric dispersion relations that lead to unique and useful magnonic
properties. Here we derive an analytical expression for the magnon propagation
angle within the micromagnetic framework and show how the dispersion relation
can be approx... | 1803.09648v1 |
2014-06-23 | Magnon-Driven Domain-Wall Motion with the Dzyaloshinskii-Moriya Interaction | We study domain wall (DW) motion induced by spin waves (magnons) in the
presence of Dzyaloshinskii-Moriya interaction (DMI). The DMI exerts a torque on
the DW when spin waves pass through the DW, and this torque represents a linear
momentum exchange between the spin wave and the DW. Unlike angular momentum
exchange bet... | 1406.5997v2 |
2014-06-27 | Observation of propagating edge spin waves modes | Broadband magnetization response of equilateral triangular 1000 nm Permalloy
dots has been studied under an in-plane magnetic field, applied parallel
(buckle state) and perpendicular (Y state) to the triangles base. Micromagnetic
simulations identify edge spin waves (E-SWs) in the buckle state as SWs
propagating along ... | 1406.7186v1 |
2018-12-13 | Spin-Orbital Density Wave and a Mott Insulator in a Two-Orbital Hubbard Model on a Honeycomb Lattice | Inspired by recent discovery of correlated insulating states in twisted
bilayer graphene (TBG), we study a two-orbital Hubbard model on the honeycomb
lattice with two electrons per unit cell. Based on the real-space density
matrix renormalization group (DMRG) simulation, we identify a metal-insulator
transition around ... | 1812.05661v3 |
2019-02-19 | Spatial spin-wave modulator for quantum memory assisted adaptive measurements | Utilization of the spatial degree of freedom vastly enhances informational
capacity of light at the cost of stringent requirements on the processing
devices. Multi-mode quantum memories constitute a viable candidate for quantum
and classical information processing; however, full utilization of the assets
of high-dimens... | 1902.07255v1 |
2019-06-19 | Edge localization of spin waves in antidot multilayers with perpendicular magnetic anisotropy | We study the spin-wave dynamics in nanoscale antidot lattices based on Co/Pd
multilayers with perpendicular magnetic anisotropy. Using time-resolved
magneto-optical Kerr effect measurements we demonstrate that the variation of
the antidot shape introduces significant change in the spin-wave spectra,
especially in the l... | 1906.08109v2 |
2019-06-21 | Goos-Hänchen effect of spin waves at heterochiral interfaces | We theoretically investigate the Goos-H\"{a}nchen (GH) effect of spin-wave
beams reflected from the interface between two ferromagnetic films with
different Dzyaloshinskii-Moriya interactions (DMIs). The formula of the GH
shift as functions of the incident angle and material parameters is derived
analytically. We show ... | 1906.08999v2 |
2016-03-03 | Cloaking the magnons | We propose two approaches to cloak the spin waves (magnons) by investigating
magnetization dynamics. One approach is based on a spatially inhomogeneous
anisotropic magnetic moment tensor. The other mechanism is using a spatially
inhomogeneous anisotropic gyromagnetic factor tensor and an inhomogeneous
external magnetic... | 1603.01000v1 |
2016-12-15 | Experimental prototype of a spin-wave majority gate | Featuring low heat dissipation, devices based on spin-wave logic gates
promise to comply with increasing future requirements in information
processing. In this work, we present the experimental realization of a majority
gate based on the interference of spin waves in an Yttrium-Iron-Garnet-based
waveguiding structure. ... | 1612.07708v1 |
2017-10-25 | Collective spin waves in arrays of Permalloy nanowires with single-side periodically modulated width | We have experimentally and numerically investigated the dispersion of
collective spin waves prop-agating through arrays of longitudinally magnetized
nanowires with periodically modulated width. Two nanowire arrays with
single-side modulation and different periodicity of modulation were studied and
compared to the nanow... | 1710.09163v1 |
2018-04-16 | Quantum optics of spin waves through ac Stark modulation | We bring the set of linear quantum operations, important for many fundamental
studies in photonic systems, to the material domain of collective excitations
known as spin waves. Using the ac Stark effect we realize quantum operations on
single excitations and demonstrate a spin-wave analogue of Hong-Ou-Mandel
effect, re... | 1804.05854v2 |
2019-03-03 | Spin wave damping in periodic and quasiperiodic magnonic structures | We investigated the lifetime of spin wave eigenmodes in periodic and
quasiperiodic sequences of Py and Co wires. Those materials differ
significantly in damping coefficients, therefore, the spatial distribution of
the mode amplitude within the structure is important for the lifetime of
collective spin wave excitations.... | 1903.00856v1 |
2019-03-11 | Spin waves in thin films and magnonic crystals with Dzyaloshinskii-Moriya interactions | The influence of the Dzyaloshinskii-Moriya interaction in ultra-thin
ferromagnetic films and chiral magnonic crystals on the behavior of spin waves
is reviewed. During the last decade, it has been shown, both theoretically and
experimentally, that this anisotropic exchange interaction produces
non-reciprocal features o... | 1903.04288v2 |
2019-05-08 | Nanoscale spin-wave wake-up receiver | We present the concept of a passive spin-wave device which is able to
distinguish different radio-frequency pulse trains and validate its
functionality using micromagnetic simulations. The information is coded in the
phase of the individual pulses which are transformed into spin-wave packets.
The device splits every in... | 1905.03006v1 |
2019-05-13 | Unmodelled Clustering Methods for Gravitational Wave Populations of Compact Binary Mergers | The mass and spin distributions of compact binary gravitational-wave sources
are currently uncertain due to complicated astrophysics involved in their
formation. Multiple sub-populations of compact binaries representing different
evolutionary scenarios may be present among sources detected by Advanced LIGO
and Advanced... | 1905.04825v2 |
2020-09-17 | Spin-wave focusing induced skyrmion generation | We propose a new method to generate magnetic skyrmions through spin-wave
focusing in chiral ferromagnets.A lens is constructed to focus spin waves by a
curved interface between two ferromagnetic thin films with different
perpendicular magnetic anisotropies. Based on the principle of identical
magnonic path length, we d... | 2009.08091v1 |
2020-11-02 | Spin wave propagation in corrugated waveguides | Curvature-induced effects allow us to tailor the static and dynamic response
of a magnetic system with a high degree of freedom. We study corrugated
magnonic waveguides deposited on a sinusoidally modulated substrate prepared by
focused electron beam deposition. The surface curvature in films with
thicknesses comparabl... | 2011.01274v1 |
2020-11-23 | Asymmetric spin wave dispersion due to a saturation magnetization gradient | We demonstrate using micromagnetic simulations and a theoretical model that a
gradient in the saturation magnetization ($M_s$) of a perpendicularly
magnetized ferromagnetic film induces a non-reciprocal spin wave propagation
and, consequently an asymmetric dispersion relation. The $M_s$ gradient adds a
linear potential... | 2011.11148v2 |
2021-08-02 | Spin Wave Computing using pre-recorded magnetization patterns | We propose a novel type of a spin wave computing device, based on a bilayer
structure which includes a bias layer, made from a hard magnetic material and a
propagation layer, made from a magnetic material with low damping, for example,
Yttrium Garnet (YiG) or Permalloy. The bias layer maintains a stable
pre-recorded ma... | 2108.00909v1 |
2016-11-29 | Superdirectional Beam of Surface Spin Wave | The visualized diffraction patterns of surface spin wave excited by
arbitrarily oriented linear transducer are investigated experimentally in the
plane of tangentially magnetized ferrite film for the case where the transducer
length D is much larger than the wavelength L. It is shown experimentally and
theoretically th... | 1611.09595v2 |
2017-03-20 | Spin-wave excitations in the SDW state of doped iron pnictides | We investigate the spin-wave excitations in the spin-density wave state of
doped iron pnictides within a five-orbital model. We find that the excitations
along ($\pi, 0$)$\rightarrow$($\pi, \pi$) are very sensitive to the doping
whereas they do not exhibit a similar sensitivity along ($0, 0$) $\rightarrow$
($\pi, 0$). ... | 1703.06601v1 |
2019-01-18 | Magnon-Fluxon interaction in a ferromagnet/superconductor heterostructure | Ferromagnetism and superconductivity are most fundamental phenomena in
condensed matter physics. Entailing opposite spin orders, they share an
important conceptual similarity: Disturbances in magnetic ordering in magnetic
materials can propagate in the form of spin waves (magnons) while magnetic
fields penetrate superc... | 1901.06156v1 |
2019-09-16 | Skyrmions and spin waves in frustrated ferromagnets at low applied magnetic field | A continuum model of frustrated ferromagnets is analyzed in detail in the
regime of low applied magnetic field, $H_0<1/4$, where the ground state is a
spatially varying conical spiral. By changing variables to a corotating spin
field, the model is reformulated as a gauged sigma model in a fixed background
gauge, allowi... | 1909.07970v2 |
2019-09-21 | Deterministic generation and partial retrieval of a spin-wave excitation in an atomic ensemble | In this paper, we report a generation of a spin-wave excitation (SWE) with a
near-unity () probability in a given time (~730). Such deterministic generation
relies on a feedback scheme with a millisecond quantum memory. The millisecond
memory is achieved by maximizing the wavelength of the spin wave and storing
the SWE... | 1909.09766v1 |
2020-01-18 | Off-axial focusing of spin-wave lens in the presence of Dzyaloshinskii-Moriya interaction | We theoretically study the effect of Dzyaloshinskii-Moriya interaction (DMI)
on the focusing of a spin-wave lens that is constructed by a circular interface
between two magnetic films. We analytically derive the generalized Snell's law
in the curved geometry and the position of the focal point which exhibits a
peculiar... | 2001.06604v1 |
2020-02-11 | Sub-micrometer near-field focusing of spin waves in ultrathin YIG films | We experimentally demonstrate tight focusing of a spin wave beam excited in
extended nanometer-thick films of Yttrium Iron Garnet by a simple microscopic
antenna functioning as a single-slit near-field lens. We show that the focal
distance and the minimum transverse width of the focal spot can be controlled
in a broad ... | 2002.04284v1 |
2021-06-17 | Anomalous spin waves in CsFeCl$_{3}$ and RbFeCl$_{3}$ | We investigate magnetic excitations in the $S=1$ easy-plan-type triangular
antiferromagnets CsFeCl$_{3}$ and RbFeCl$_{3}$ through a combination of
inelastic neutron scattering measurements and spin-wave theory calculations
based on an established exchange-coupling Hamiltonian. We show that in either
material the model ... | 2106.09447v2 |
2021-09-22 | Theory of the dipole-exchange spin wave spectrum in ferromagnetic films with in-plane magnetization revisited | We present a refinement of the widely accepted spin-wave spectrum that
Kalinikos and Slavin computed for magnetic films with an in-plane magnetization
(1986). The spin wave spectrum that follows from the diagonal approximation in
this theory becomes inaccurate for relatively thick films, as has already been
noted by Kr... | 2109.10597v2 |
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