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2023-06-08 | Series Solution for Interaction of Scalar Plane Wave with Spatially Decaying Gravitational Wave | In this paper we present the power series solution of the Klein-Gordon
equation in the spacetime background of a gravitational wave with amplitude
that decays with distance from the source. The resulting solution describes the
interaction of a scalar plane wave travelling in an arbitrary direction
relative to the direc... | 2306.05394v1 |
1999-04-20 | Birth of resonances in the spin-orbit problem of Celestial Mechanics | The behaviour of resonances in the spin-orbit coupling in Celestial Mechanics
is investigated. We introduce a Hamiltonian nearly-integrable model describing
an approximation of the spin-orbit interaction. A parametric representation of
periodic orbits is presented. We provide explicit formulae to compute the
Taylor ser... | 9904035v1 |
1997-10-14 | Pi excitation of the t-J model | In this paper, we present analytical and numerical calculations of the pi
resonance in the t-J model. We show in detail how the pi resonance in the
particle-particle channel couples to and appears in the dynamical spin
correlation function in a superconducting state. The contribution of the pi
resonance to the spin exc... | 9710139v1 |
2001-11-29 | Zeeman effects on the impurity-induced resonances in d-wave superconductors | It is shown how the resonant states induced by a single spinless impurity in
a d-wave superconductor evolve under the effect of an applied Zeeman magnetic
field. Moreover, it is demonstrated that the spin-orbit coupling to the
impurity potential can have important and characteristic effects on the
resonant states and t... | 0111554v2 |
2004-03-24 | Resonant magnetic excitations at high energy in superconducting $\bf YBa_2Cu_3O_{6.85}$ | A detailed inelastic neutron scattering study of the high temperature
superconductor $\rm YBa_2Cu_3O_{6.85}$ provides evidence of new resonant
magnetic features, in addition to the well known resonant mode at 41 meV: (i) a
commensurate magnetic resonance peak at 53 meV with an even symmetry under
exchange of two adjace... | 0403609v1 |
2011-04-02 | Vector meson-Baryon dynamics and generation of resonances | The purpose of this work is to study vector meson-octet baryon interactions
with the aim to find dynamical generation of resonances in such systems. For
this, we consider s-, t-, u-channel diagrams along with a contact interaction
originating from the hidden local symmetry Lagrangian. We find the contribution
from all ... | 1104.0307v1 |
2011-09-10 | Entanglement Evolution via Quantum Resonances | We consider two qubits interacting with local and collective thermal
reservoirs. Each spin-reservoir interaction consists of an energy exchange and
an energy conserving channel. We prove a resonance representation of the
reduced dynamics of the spins, valid for all times t>=0, with errors (small
interaction) estimated ... | 1109.2235v1 |
2013-06-18 | The confinement induced resonance in spin-orbit coupled cold atoms with Raman coupling | We investigate the confinement induced resonance in spin-orbit coupled cold
atoms with Raman coupling. We find that the quasi-bound levels induced by the
spin-orbit coupling and Raman coupling result in the Feshbach-type resonances.
For sufficiently large Raman coupling, the bound states in one dimension exist
only for... | 1306.4099v5 |
2013-10-09 | Spin resonance in AFe2Se2 with s-wave pairing symmetry | We study spin resonance in the superconducting state of recently discovered
alkali-intercalated iron selenide materials A_xFe_(2-y)Se_2 (A=K,Rb,Cs) in
which the Fermi surface has only electron pockets. Recent angle-resolved
photoemission spectroscopy (ARPES) studies [M. Xu et al., Phys. Rev. B 85,
220504(R) (2012)] wer... | 1310.2334v2 |
2015-07-27 | Electron spin resonance in a model S=1/2 chain antiferromagnet with a uniform Dzyaloshinskii--Moriya interaction | The electron spin resonance spectrum of a quasi 1D S=1/2 antiferromagnet
K2CuSO4Br2 was found to demonstrate an energy gap and a doublet of resonance
lines in a wide temperature range between the Curie--Weiss and Ne\`{e}l
temperatures. This type of magnetic resonance absorption corresponds well to
the two-spinon contin... | 1507.07518v1 |
2016-07-27 | The Role of Multilevel Landau-Zener Interference in Extreme Harmonic Generation | Motivated by the observation of multiphoton electric dipole spin resonance
processes in InAs nanowires, we theoretically study the transport dynamics of a
periodically driven five-level system, modeling the level structure of a
two-electron double quantum dot. We show that the observed multiphoton
resonances, which are... | 1607.08207v1 |
2017-07-04 | High-Resolution Nanoscale Solid-State Nuclear Magnetic Resonance Spectroscopy | We present a new method for high-resolution nanoscale magnetic resonance
imaging (nano-MRI) that combines the high spin sensitivity of nanowire-based
magnetic resonance detection with high spectral resolution nuclear magnetic
resonance (NMR) spectroscopy. By applying NMR pulses designed using optimal
control theory, we... | 1707.01062v1 |
2019-11-26 | Ultrastrong coupling between a microwave resonator and antiferromagnetic resonances of rare earth ion spins | Quantum magnonics is a new and active research field, leveraging the strong
collective coupling between microwaves and magnetically ordered spin systems.
To date work in quantum magnonics has focused on transition metals and almost
entirely on ferromagnetic resonances in yttrium iron garnet (YIG).
Antiferromagnetic sys... | 1911.11311v1 |
2018-04-01 | Resonance states near a quantum magnetic impurity in single-layer FeSe superconductors with $d$-wave symmetry | In this work, we investigate the local density of states (LDOS) near a
magnetic impurity in single-layer FeSe superconductors. The two-orbital model
with spin-orbit coupling proposed in Ref. [{\emph{Phys. Rev. Lett.}
\textbf{119}, 267001 (2017)}] is used to describe the FeSe superconductor. In
the strong coupling regim... | 1804.00258v1 |
2020-02-11 | Revisiting the Possible 4f7 5d1 Ground State of Gd Impurities in SmB6 by Electron Spin Resonance | The search for topological states in strongly correlated electron systems has
renewed the interest in the Kondo insulator SmB6. One of the most intriguing
previous results was an anomalous electron spin resonance spectrum in Gd-doped
SmB6. This spectrum was attributed to Gd2+ ions because it could be very well
decribed... | 2002.04572v1 |
2020-07-28 | Dynamical Zeeman resonance in spin-orbit-coupled spin-1 Bose gases | We predict a dynamical resonant effect, which is driven by externally applied
linear and quadratic Zeeman fields, in a spin-orbit-coupled spin-1
Bose-Einstein condensate. The Bose-Einstein condensate is assumed to be
initialized in some superposed state of Zeeman sublevels and subject to a
sudden shift of the trapping ... | 2007.14131v1 |
2021-07-16 | Influence of inter-sublattice coupling on the terahertz nutation spin dynamics in antiferromagnets | Spin nutation resonance has been well-explored in one-sublattice
ferromagnets. Here, we investigate the spin nutation in two-sublattice
antiferromagnets as well as, for comparison, ferrimagnets with inter-and
intra-sublattice nutation coupling. In particular, we derive the susceptibility
of the two-sublattice magnetic ... | 2107.07939v2 |
2021-09-20 | Electron Spin Resonance of the itinerant ferromagnets LaCrGe3, CeCrGe3 and PrCrGe3 | We report Electron Spin Resonance of the itinerant ferromagnets LaCrGe3,
CeCrGe3, and PrCrGe3. These compounds show well defined and very similar
spectra of itinerant Cr 3d spins in the paramagnetic temperature region. Upon
cooling and crossing the Cr-ferromagnetic ordering (below around 90 K) strong
spectral structure... | 2109.09341v1 |
2022-05-09 | Coupling Spin Defects in Hexagonal Boron Nitride to Titanium Oxide Ring Resonators | Spin-dependent optical transitions are attractive for a plethora of
applications in quantum technologies. Here we report on utilization of high
quality ring resonators fabricated from TiO2 to enhance the emission from
negatively charged boron vacancies in hexagonal Boron Nitride. We show that the
emission from these de... | 2205.04031v1 |
2023-12-19 | Three-photon electron spin resonances | We report the observation of a three-photon resonant transition of
charge-carrier spins in an organic light-emitting diode using electrically
detected magnetic resonance (EDMR) spectroscopy at room temperature. Under
strong magnetic-resonant drive (drive field $B_1$ ~ static magnetic field
$B_0$), a $B_0$-field swept E... | 2312.12609v1 |
2002-12-19 | Trapped particle bounds on stimulated scatter in the large k/kD regime | In the strongly damped regime, the convective gain rate for stimulated
scatter varies inversely with the plasma wave damping rate. Electron trapping
effects reduce the damping but also lead to loss of resonance for large enough
amplitude waves. This leads to a gain rate bound and corresponding optimum
scattered light f... | 0212071v1 |
2006-05-02 | Enhanced transmission of light through a gold film due to excitation of standing surface plasmon Bloch waves | We have observed enhanced transmission of light through a gold film due to
excitation of standing surface plasmon Bloch waves in a surface Fabry-Perot
resonator. Our experimental results strongly contradict the recently suggested
model of light transmission via excitation of a composite diffractive
evanescent wave. | 0605020v1 |
2005-01-19 | Einstein's coefficients and the wave-particle duality in the theory of thermal radiation | It is shown that the concept of elementary resonator in the theory of thermal
radiation implies the indivisible connection between particles (photons) and
electromagnetic waves. This wave-particle duality covers both the Wien and
Rayleigh-Jeans regions of spectrum. | 0501103v1 |
2014-04-17 | Tuning resonant interaction of orthogonally polarized solitons and dispersive waves with the soliton power | We demonstrate that the relatively small power induced changes in the soliton
wavenumber comparable with splitting of the effective indexes of the
orthogonally polarized waveguide modes result in significant changes of the
efficiency of the interaction between solitons and dispersive waves and can be
used to control en... | 1404.4476v1 |
2021-10-04 | Asymptotic stability of solitary waves for the 1D cubic-quintic Schrödinger equation with no internal mode | For the Schr\"odinger equation with a cubic-quintic, focusing-defocusing
nonlinearity in one space dimension, we prove the asymptotic stability of
solitary waves for a large range of admissible frequencies. For this model, the
linearized problem around the solitary waves does not have internal mode nor
resonance. | 2110.01492v1 |
2021-10-18 | Zeroth-order considerations on an accelerator-based gravitational wave amplifier | The operation of an accelerator-based gravitational wave amplifier has been
studied, taking into account the interaction between beam and gravitational
wave and neglecting all effects related to the emission of - and interaction
with electromagnetic radiation. The small-gain operation mode has been
considered. The grav... | 2110.09025v1 |
2022-07-08 | Unconventional Collective Resonance as Nonlinear Mechanism of Ectopic Activity in Excitable Media | Many physical, chemical and biological processes rely on intrinsic
oscillations to employ resonance responses to external stimuli of certain
frequency. Such resonance phenomena in biological systems are typically
explained by one of two mechanisms: either a classical linear resonance of
harmonic oscillator, or entrainm... | 2207.03975v1 |
2020-10-05 | Floquet spin states in OLEDs | Weakly spin-orbit coupled electron and hole spins in organic light-emitting
diodes (OLEDs) constitute near-perfect two-level systems to explore the
interaction of light and matter in the ultrastrong-drive regime. Under such
highly non-perturbative conditions, the frequency at which the spin oscillates
between states, t... | 2010.02170v1 |
2007-05-24 | Optical investigations of quantum-dot spin dynamics | We have performed all-optical measurements of spin relaxation in single
self-assembled InAs/GaAs quantum dots (QD) as a function of static external
electric and magnetic fields. To study QD spin dynamics we measure the degree
of resonant absorption which results from a competition between optical spin
pumping induced b... | 0705.3557v1 |
2010-01-20 | Spin electric effects in molecular antiferromagnets | Molecular nanomagnets show clear signatures of coherent behavior and have a
wide variety of effective low-energy spin Hamiltonians suitable for encoding
qubits and implementing spin-based quantum information processing. At the
nanoscale, the preferred mechanism for control of quantum systems is through
application of e... | 1001.3584v1 |
2014-01-12 | Sub-nanometer resolution in three-dimensional magnetic-resonance imaging of individual dark spins | Magnetic resonance imaging (MRI) has revolutionized biomedical science by
providing non-invasive, three-dimensional biological imaging. However, spatial
resolution in conventional MRI systems is limited to tens of microns, which is
insufficient for imaging on molecular and atomic scales. Here we demonstrate an
MRI tech... | 1401.2674v2 |
2016-06-17 | Discrimination between spin-dependent charge transport and spin dependent recombination in π-conjugated polymers by correlated current and electroluminescence-detected magnetic resonance | Spin-dependent processes play a crucial role in organic electronic devices.
Spin coherence can give rise to spin mixing due to a number of processes such
as hyperfine coupling, and leads to a range of magnetic field effects. However,
it is not straightforward to differentiate between pure single-carrier
spin-dependent ... | 1606.05680v1 |
2013-12-19 | Dynamics of a localized spin excitation close to the spin-helix regime | The time evolution of a local spin excitation in a (001)-confined
two-dimensional electron gas subjected to Rashba and Dresselhaus spin-orbit
interactions of similar strength is investigated theoretically and compared
with experimental data. Specifically, the consequences of the finite spatial
extension of the initial ... | 1312.5529v1 |
2015-05-13 | Excitations in a spin-polarized tow-dimensional electron gas | A remarkably long-lived spin plasmon may exist in two-dimensional electron
liquids with imbalanced spin up and spin down population. Predictions for this
interesting mode by Agarwal et al. [Phys. Rev. B 90, 155409 (2014)] are based
on the random phase approximation. We here show how to account for spin
dependent correl... | 1505.03370v3 |
2019-09-30 | Ultrathin SnTe films as a route towards all-in-one spintronics devices | Spin transistors based on a semiconducting channel attached to ferromagnetic
electrodes suffer from fast spin decay and extremely low spin
injection/detection efficiencies. Here, we propose an alternative all-in-one
spin device whose operation principle relies on electric manipulation of the
spin lifetime in two-dimens... | 1909.13865v2 |
2013-08-24 | Spin Dynamics in Graphene and Graphene like Nanocarbon Doped with Nitrogen the ESR Analysis | Nano engineered spin degree of freedom in carbon system may offer desired
exchange coupling with optimum spin orbit interaction which is essential, to
construct solid state qubits, for fault tolerant quantum computation. The
purpose of this communication is to analyze spin dynamics of, basically, four
types of systems,... | 1308.5291v1 |
2021-10-21 | The spin-spin problem in Celestial Mechanics | We study the dynamics of two homogeneous rigid ellipsoids subject to their
mutual gravitational influence. We assume that the spin axis of each ellipsoid
coincides with its shortest physical axis and is perpendicular to the orbital
plane. Due to such assumptions, the problem is planar and depends on particular
paramete... | 2110.11152v1 |
2020-07-24 | Determination of the spin Hall angle, spin mixing conductance and spin diffusion length in Ir/CoFeB for spin-orbitronic devices | Iridium is a very promising material for spintronic applications due to its
interesting magnetic properties such as large RKKY exchange coupling as well as
its large spin-orbit coupling value. Ir is for instance used as a spacer layer
for perpendicular synthetic antiferromagnetic or ferrimagnet systems. However,
only a... | 2007.12413v1 |
2000-08-23 | Two-step contribution to the spin-longitudinal and spin-transverse cross sections of the quasielastic (p,n) reactions | The two-step contribution to the spin-longitudinal and the spin-transverse
cross sections of ^{12}C,^{40}Ca(p,n) reactions at 494 MeV and 346 MeV is
calculated. We use a plane-wave approximation and evaluate the relative
contributions from the one-step and the two-step processes. We found that the
ratios of the two-ste... | 0008045v2 |
2006-05-23 | All-electrical control of single ion spins in a semiconductor | We propose a method for all-electrical initialization, control and readout of
the spin of single ions substituted into a semiconductor. Mn ions in GaAs form
a natural example. In the ion's ground state the Mn core spin magnetic moment
locks antiparallel to the spin and orbital magnetic moment of a bound valence
hole fr... | 0605203v2 |
2008-07-14 | Electric-field induced spin excitations in two-dimensional spin-orbit coupled systems | Rigorous coupled spin-charge drift-diffusion equations are derived from
quantum-kinetic equations for the spin-density matrix that incorporate effects
due to k-linear spin-orbit interaction, an in-plane electric field, and the
elastic scattering on nonmagnetic impurities. The explicit analytical solution
for the induce... | 0807.2142v1 |
2012-05-10 | 3D quaternionic condensations, Hopf invariants, and skyrmion lattices with synthetic spin-orbit coupling | We study the topological configurations of the two-component condensates of
bosons with the $3$D $\vec{\sigma}\cdot \vec{p}$ Weyl-type spin-orbit coupling
subject to a harmonic trapping potential. The topology of the condensate
wavefunctions manifests in the quaternionic representation. In comparison to
the $U(1)$ comp... | 1205.2162v3 |
2014-10-28 | A solution of the Boltzmann transport equations for spin and charge transport in a solid. Spin Proximity effect | A solution of the modified Boltzmann transport equations is found, which
describes features of the spin and charge transport in a solid. Two
modifications of the Boltzmann transport equation were introduced. The first
modification describes the fact that a delocalized electrons can either be of
the running-wave type or... | 1410.7511v1 |
2015-03-26 | Spin nematic fluctuations near a spin-density-wave phase | We study an interacting electronic system exhibiting a spin nematic
instability. Using a phenomenological form for the spin fluctuation spectrum
near the spin-density-wave (SDW) phase, we compute the spin nematic
susceptibility in energy and momentum space as a function of temperature and
the magnetic correlation lengt... | 1503.07646v1 |
2015-04-14 | Spin dynamics in relativistic light-matter interaction | Various spin effects are expected to become observable in light-matter
interaction at relativistic intensities. Relativistic quantum mechanics
equipped with a suitable relativistic spin operator forms the theoretical
foundation for describing these effects. Various proposals for relativistic
spin operators have been of... | 1504.03489v1 |
2017-09-28 | Spin-orbit interaction of light induced by transverse spin angular momentum engineering | We report the first demonstration of a direct interaction between the
extraordinary transverse spin angular momentum in evanescent waves and the
intrinsic orbital angular momentum in optical vortex beams. By tapping the
evanescent wave of whispering gallery modes in a micro-ring-based optical
vortex emitter and enginee... | 1709.09811v1 |
2008-06-05 | Magnetization Relaxation and Collective Spin Excitations in Correlated Double--Exchange Ferromagnets | We study spin relaxation and dynamics of collective spin excitations in
correlated double--exchange ferromagnets. For this, we introduce an expansion
of the Green's functions equations of motion that treats non--perturbativerly
all correlations between a given number of spin and charge excitations and
becomes exact wit... | 0806.0938v2 |
2017-04-06 | Spin-valley half-metal as a prospective material for spin-valley-tronics | Half-metallicity (full spin polarization of the Fermi surface) usually occurs
in strongly correlated electron systems. We demonstrate that doping a
spin-density wave insulator in the weak-coupling regime may also stabilize
half-metallic states. The undoped spin-density wave is formed by four nested
bands [i.e., each ba... | 1704.01727v1 |
2021-01-09 | Many-particle Quantum Hydrodynamics of Spin-1 Bose-Einstein Condensates | We develop a novel model of the magnetized spin-1 Bose-Einstein condensate
(BEC) of neutral atoms, using the method of many-particle quantum hydrodynamic
(QHD) and propose an original derivation of the system of continual equations.
We consider bosons with a spin-spin interaction and a short range interaction
in the fi... | 2101.03422v1 |
2021-12-02 | Spin dynamics of the spin chain antiferromagnet RbFeS$_2$ | We report transport and inelastic neutron scattering studies on electronic
properties and spin dynamics of the quasi-one-dimensional spin chain
antiferromagnet RbFeS$_2$. An antiferromagnetic phase transition at
$T_N\approx195$ K and dispersive spin waves with a spin gap of 5 meV are
observed. By modeling the spin exci... | 2112.00951v3 |
2022-01-04 | Mechanism of antisymmetric spin polarization in centrosymmetric multiple-$Q$ magnets based on bilinear and biquadratic spin cross products | We investigate how to engineer an antisymmetric spin-split band structure
under spin density waves with finite ordering wave vectors in centrosymmetric
systems without the relativistic spin-orbit coupling. On the basis of a
perturbative analysis for the spin-charge coupled model in centrosymmetric
itinerant magnets, we... | 2201.01354v1 |
2024-02-11 | Inferring small neutron star spins with neutron star-black hole mergers | The precise measurement of neutron star (NS) spins can provide important
insight into the formation and evolution of compact binaries containing NS.
While traditional methods of NS spin measurement rely on pulsar observations,
gravitational wave detections offer a complementary avenue. However,
determining component sp... | 2402.07075v1 |
1995-01-30 | On the spin density wave transition in a two dimensional spin liquid | Strongly correlated two dimensional electrons are believed to form a spin
liquid in some regimes of density and temperature. As the density is varied,
one expects a transition from this spin liquid state to a spin density wave
antiferromagnetic state. In this paper we show that it is self-consistent to
assume that this... | 9501133v1 |
1997-07-07 | Spin Liquid Phases in 2D Frustrated XY Model | In this paper we consider the $J_1-J_2-J_3$ classical and quantum 2D XY
model. Spin wave calculations show that a spin liquid phase still exists in the
quantum case as for Heisenberg models. We formulate a semiclassical approach of
these models based on spin wave action and use a variational method to study
the role pl... | 9707074v1 |
1998-08-18 | Spin-density-functional theory of circular and elliptical quantum dots | Using spin-density-functional theory, we study the electronic states of a
two-dimensional parabolic quantum dot with up to N=58 electrons. We observe a
shell structure for the filling of the dot with electrons. Hund's rule
determines the spin configuration of the ground state, but only up to 22
electrons. At specific N... | 9808193v1 |
1999-08-16 | Current-driven Magnetization Reversal and Spin Wave Excitations in Co/Cu/Co Pillars | Using thin film pillars ~100 nm in diameter, containing two ferromagnetic Co
layers of different thicknesses separated by a paramagnetic Cu spacer, we
examine effects of torques due to spin-polarized currents flowing perpendicular
to the layers. In accordance with spin-transfer theory, spin-polarized
electrons flowing ... | 9908231v1 |
2000-12-10 | Theory of spin wave excitations of metallic A-type antiferromagnetic manganites | The spin dynamic of the metallic A-type antiferromagnetic manganites is
studied. An effective nearest-neighbour Heisenberg spin wave dispersion is
derived from the double exchange model taking into account the superexchange
interaction between the core spins. The result of inelastic neutron scattering
experiment on ${N... | 0012166v2 |
2002-10-10 | Spin wave theory for antiferromagnetic XXZ spin model on a triangle lattice in the presence of an external magnetic field | Spin wave theory is applied to a quantum antiferromagnetic XXZ model on a
triangle lattice in the presence of an in-plane magnetic field. The effect of
the field is found to enhance the quantum fluctuation and to reduce the
sublattice magnetization at the intermediate field strength in the anisotropic
case. The possibl... | 0210222v1 |
2003-06-10 | Correlation functions for 1d interacting fermions with spin-orbit coupling | We compute correlation functions for one-dimensional electron systems which
spin and charge degrees of freedom are coupled through spin-orbit coupling.
Charge density waves, spin density waves, singlet- triplet- superconducting
fluctuations are studied. We show that the spin-orbit interaction modify the
exponents and t... | 0306251v1 |
2003-08-06 | Exciton Spin Relaxation Time in Quantum Dots Measured by Continuous-Wave Photoluminescence Spectroscopy | We demonstrate a new method of measuring the exciton spin relaxation time in
semiconductor nanostructures by continuous-wave photoluminescence. We find that
for self-assembled CdTe quantum dots the degree of circular polarization of
emission is larger when exciting polarized excitons into the lower energy spin
state th... | 0308116v1 |
2004-11-10 | Maxwell Equation for the Coupled Spin-Charge Wave Propagation | We show that the dissipationless spin current in the ground state of the
Rashba model gives rise to a reactive coupling between the spin and charge
propagation, which is formally identical to the coupling between the electric
and the magnetic fields in the 2+1 dimensional Maxwell equation. This analogy
leads to a remar... | 0411276v1 |
2005-05-18 | Spin Dynamics in the Two-Dimensional Spin 1/2 Heisenberg Antiferromagnet | We present low-temperature dynamic properties of the quantum two-dimensional
antiferromagnetic Heisenberg model with spin S=1/2. The calculation of the
dynamic correlation function is performed by combining a projection operator
formalism and the modified spin-wave theory (MSW), which gives a gap in the
dispersion rela... | 0505458v1 |
2005-07-01 | Spin accumulation in ballistic Rashba bar | We propose an analytic model to study intrinsic spin polarization effect in a
ballistic Rashba bar with two semi-infinite leads. The wave functions expanded
with plane waves in Rashba bar are required to satisfy boundary conditions at
both longitudinal and transverse interfaces. We find out-of-plane spin Hall
accumulat... | 0507025v1 |
2005-08-29 | Spin-Phonon Coupling in High-T_c Copper Oxides | Band calculations on HgBa$_2$CuO$_4$ and La$_{(2-x)}$Sr$_x$CuO$_4$ with
phonon and spin-waves within the CuO planes show that partial gaps are created
at various energies depending on wavelengths. Spin and phonon gaps appear at
different energies when the modulations are along [1,1,0], while they are at
the same energy... | 0508672v1 |
2006-02-23 | Two-dimensional electron scattering in regions of nonuniform spin-orbit coupling | We present a theoretical study of elastic spin-dependent electron scattering
caused by a nonuniform Rashba spin-orbit coupling strength. Using the
spin-generalized method of partial waves the scattering amplitude is exactly
derived for the case of a circular shape of scattering region. We found that
the polarization of... | 0602560v1 |
2006-06-02 | Parametric instability of homogeneous precession of spin in the superfluid 3He-B | Stability of homogeneous precession of spin due to parametric excitation of
spin waves is considered as the explanation of the "catastrophic relaxation",
that is observed in the superfluid 3He-B. It is shown, that at sufficiently low
temperatures homogeneous precession of spin becomes unstable (Suhl
instability). At ze... | 0606054v1 |
2006-10-13 | Efficient switching of Rashba spin splitting in wide modulation-doped quantum wells | We demonstrate that the size of the electric-field-induced Rashba spin
splitting in an 80 nm wide modulation-doped InGaSb quantum well can depend
strongly on the spatial variation of the electric field. In a slightly
asymmetric quantum well it can be an order of magnitude stronger than for the
average uniform electric ... | 0610371v1 |
2007-02-07 | Damping of antiferromagnetic spin waves by valence fluctuations in the double layer perovskite YBaFe2O5 | Inelastic neutron scattering experiments show that spin dynamics in the
charge ordered insulating ground state of the double-layer perovskite YBaFe2O5
is well described in terms of eg superexchange interactions. Above the Verwey
transition at TV = 308 K, t2g double exchange-type conduction within
antiferromagnetic FeO2... | 0702181v1 |
2002-07-02 | Gravitational Waves from Spinning Compact Binaries | Binary systems of rapidly spinning compact objects, such as black holes or
neutron stars, are prime targets for gravitational wave astronomers. The
dynamics of these systems can be very complicated due to spin-orbit and
spin-spin couplings. Contradictory results have been presented as to the nature
of the dynamics. Her... | 0207016v1 |
2006-04-05 | Self interaction of spins in binary systems | Beyond point mass effects various contributions add to the radiative
evolution of compact binaries. We present all the terms up to the second
post-Newtonian order contributing to the rate of increase of gravitational wave
frequency and the number of gravitational wave cycles left until the final
coalescence for binary ... | 0604022v1 |
2004-09-02 | Spinning particle in an external linearized gravitational wave field | We study the interaction of a scalar and a spinning particle with a coherent
linearized gravitational wave field treated as a classical spin two external
field. The spin degrees of freedom of the spinning particle are described by
skew-commuting variables. We derive the explicit expressions for the
eigenfunctions and t... | 0409027v1 |
2005-07-28 | Quantum entanglement dynamics and decoherence wave in spin chains at finite temperatures | We analyze the quantum entanglement at the equilibrium in a class of exactly
solvable one-dimensional spin models at finite temperatures and identify a
region where the quantum fluctuations determine the behavior of the system. We
probe the response of the system in this region by studying the spin dynamics
after proje... | 0507266v1 |
2008-03-25 | Long range order for lattice dipoles | We consider a system of classical Heisenberg spins on a cubic lattice in
dimensions three or more, interacting via the dipole-dipole interaction. We
prove that at low enough temperature the system displays orientational long
range order, as expected by spin wave theory. The proof is based on reflection
positivity metho... | 0803.3576v1 |
2008-09-23 | The Spin Distribution of Millisecond X-ray Pulsars | The spin frequency distribution of accreting millisecond X-ray pulsars cuts
off sharply above 730 Hz, well below the breakup spin rate for most neutron
star equations of state. I review several different ideas for explaining this
cutoff. There is currently considerable interest in the idea that gravitational
radiation ... | 0809.4031v1 |
2008-09-24 | Gated combo nanodevice for sequential operations on single electron spin | An idea for a nanodevice in which an arbitrary sequence of three basic
quantum single qubit gates - negation, Hadamard and phase shift - can be
performed on a single electron spin. The spin state is manipulated using the
spin-orbit coupling and the electron trajectory is controlled by the electron
wave function self-fo... | 0809.4195v1 |
2009-03-09 | d-Wave Spin Density Wave phase in the Attractive Hubbard Model with Spin Polarization | We investigate the possibility of unconventional spin density wave (SDW) in
the attractive Hubbard model with finite spin polarization. We show that
pairing and density fluctuations induce the transverse d-wave SDW near the
half-filling. This novel SDW is related to the d-wave superfluidity induced by
antiferromagnetic... | 0903.1491v1 |
2009-03-12 | Simulation of a spin-wave instability from atomistic spin dynamics | We study the spin dynamics of a Heisenberg model at finite temperature in the
presence of an external field or a uniaxial anisotropy. For the case of the
uniaxial anisotropy our simulations show that the macro moment picture breaks
down. An effect which we refer to as a spin-wave instability (SWI) results in a
non-diss... | 0903.2186v1 |
2010-09-13 | Helical spin textures in dipolar Bose-Einstein condensates | We numerically study elongated helical spin textures in ferromagnetic spin-1
Bose-Einstein condensates subject to dipolar interparticle forces. Stationary
states of the Gross-Pitaevskii equation are solved and analyzed for various
values of the helical wave vector and dipolar coupling strength. We find two
helical spin... | 1009.2372v3 |
2012-04-27 | Spin-dependent electron grating effect from helical magnetization in multiferroic tunnel junctions | In multiferroic oxides with a transverse helical magnetic order, the
magnetization exchange coupling is sinusoidally space-dependent. We
theoretically investigate the spin-dependent electron grating effect in
normal-metal/helical-multiferroic/ferromagnettic heterojunctions. The spin wave
vector of the spiral can be add... | 1204.6095v1 |
2012-12-24 | Landau versus Spin Superfluidity in Spinor Bose-Einstein Condensates | We consider a spin-1/2 Bose-Einstein condensate prepared initially in a
single spin projection. The two channels of excitations existing in such a
system (namely density and spin waves) are discussed and we show how pure spin
waves can be excited in the presence of local magnetic defects. We analyze the
role played by ... | 1212.5894v2 |
2013-07-05 | Spin liquid phase due to competing classical orders in the semiclassical theory of the Heisenberg model with ring exchange on an anisotropic triangular lattice | Linear spin wave theory shows that ring exchange induces a quantum disordered
region in the phase diagram of the title model. Spin wave spectra show that
this is a direct manifestation of competing classical orders. A spin liquid is
found in the `Goldilocks zone' of frustration, where the quantum fluctuations
are large... | 1307.1535v1 |
2014-11-03 | Inelastic-impurity-scattering-induced spin texture and topological transitions in surface electron waves | Inelastic scattering off magnetic impurities in a spin-chiral two-dimensional
electron gas, e.g., the Rashba system, is shown to generate topological changes
in the spin texture of the electron waves emanating from the scattering center.
While elastic scattering gives rise to a purely in-plane spin texture for an
in-pl... | 1411.0377v3 |
2015-09-08 | Anomalous Hall effect driven by dipolar spin waves in uniform ferromagnets | A new type of anomalous Hall effect is shown to arise from the interaction of
conduction electrons with dipolar spin waves in ferromagnets. This effect
exists even in homogeneous ferromagnets without relativistic spin-orbit
coupling. The leading contribution to the Hall conductivity is proportional to
the chiral spin c... | 1509.02284v1 |
2016-09-15 | Route toward high-speed nano-magnonics | We study experimentally the possibility to utilize pulses of pure spin
current, produced via the nonlocal spin injection mechanism, to generate short
packets of spin waves propagating in nanoscale magnetic waveguides. The
spatially and time-resolved micro-focus Brillouin light scattering spectroscopy
measurements demon... | 1609.04526v1 |
2012-09-27 | Spin effects on gravitational waves from inspiraling compact binaries at second post-Newtonian order | We calculate the gravitational waveform for spinning, precessing compact
binary inspirals through second post-Newtonian order in the amplitude. When
spins are collinear with the orbital angular momentum and the orbits are
quasi-circular, we further provide explicit expressions for the
gravitational-wave polarizations a... | 1209.6349v2 |
2020-08-19 | Loop spin effects in intense background fields | Radiative and non-radiative electron spin flip probabilities are analysed in
both plane wave and focussed laser backgrounds. We provide a simple and
physically transparent description of spin dynamics in plane waves, and
demonstrate that there exists a kinematic regime in which the usual leading
order perturbative hier... | 2008.08578v1 |
2019-03-30 | Background noise pushes azimuthal instabilities away from spinning states | Azimuthal instabilities occur in rotationally symmetric systems, either as
spinning (rotating) waves or standing waves. We make use of a novel ansatz to
derive a differential equation characterizing the state of these instabilities
in terms of their amplitude, orientation, nature (standing/spinning) and
temporal phase.... | 1904.00213v1 |
2024-01-29 | Dissipative effects on the propagation of spin modes | In relativistic hydrodynamics with spin, following de Groot--van Leeuwen--van
Weert's energy-momentum and spin tensor definitions, we analyze the propagation
of spin degrees of freedom. We deduce an analytical formula for spin wave
velocity, finding that it approaches half the speed of light in the
ultra-relativistic l... | 2401.16007v1 |
2018-10-16 | Exact discrete resonances in the Fermi-Pasta-Ulam-Tsingou system | In systems of N coupled anharmonic oscillators, exact resonant interactions
play an important role in the energy exchange between normal modes. In the
weakly nonlinear regime, those interactions may facilitate energy equipartition
in Fourier space. We consider analytically resonant wave-wave interactions for
the celebr... | 1810.06902v1 |
2005-12-26 | Spin waves in a band ferromagnet: spin-rotationally symmetric study with self-energy and vertex corrections | First-order quantum corrections to the transverse spin-fluctuation propagator
are obtained within a systematic inverse-degeneracy 1/N expansion, which
provides a spin-rotationally symmetric scheme for including self-energy and
vertex corrections while preserving the Goldstone mode. An expression is
obtained for the spi... | 0512648v2 |
2010-05-12 | Spin effects in the phasing of gravitational waves from binaries on eccentric orbits | We compute here the spin-orbit and spin-spin couplings needed for an accurate
computation of the phasing of gravitational waves emitted by comparable-mass
binaries on eccentric orbits at the second post-Newtonian (PN) order. We use a
quasi-Keplerian parametrization of the orbit free of divergencies in the zero
eccentri... | 1005.2046v1 |
2012-05-10 | Multiboson spin-wave theory for Ba2CoGe2O7, a spin-3/2 easy-plane Neel antiferromagnet with strong single-ion anisotropy | We consider the square-lattice antiferromagnetic Heisenberg Hamiltonian
extended with a single-ion axial anisotropy term as a minimal model for the
multiferroic Ba2CoGe2O7. Developing a multiboson spin-wave theory, we
investigate the dispersion of the spin excitations in this spin-3/2 system. As
a consequence of a stro... | 1205.2196v2 |
2015-01-07 | Quadratic-in-spin effects in the orbital dynamics and gravitational-wave energy flux of compact binaries at the 3PN order | We investigate the dynamics of spinning binaries of compact objects at the
next-to-leading order in the quadratic-in-spin effects, which corresponds to
the third post-Newtonian order (3PN). Using a Dixon-type multipolar formalism
for spinning point particles endowed with spin-induced quadrupoles and
computing iterative... | 1501.01529v1 |
2018-06-13 | Phase-locking between different partial-waves in atom-ion spin-exchange collisions | We present a joint experimental and theoretical study of spin dynamics of a
single $^{88}$Sr$^+$ ion colliding with an ultracold cloud of Rb atoms in
various hyperfine states. While spin-exchange between the two species occurs
after 9.1(6) Langevin collisions on average, spin-relaxation of the Sr$^+$ ion
Zeeman qubit o... | 1806.05150v2 |
2019-02-08 | Spin dynamics of a millisecond pulsar orbiting closely around a massive black hole | We investigate the spin dynamics of a millisecond pulsar (MSP) in a tightly
bounded orbit around a massive black hole. These binaries are progenitors of
the extreme-mass-ratio-inspirals (EMRIs) and intermediate-mass-ratio-inspirals
(IMRIs) gravitational wave events. The Mathisson-Papapetrou-Dixon (MPD)
formulation is u... | 1902.03146v1 |
2020-03-27 | Electrical detection of unconventional transverse spin-currents in obliquely magnetized thin films | In a typical experiment in magnonics, thin films are magnetized in-plane and
spin waves only carry angular momentum along their spatial propagation
direction. Motivated by the experiments of Bozhko et al. [Phys. Rev. Research
2, 023324 (2020)], we show theoretically that for obliquely magnetized thin
films, exchange-di... | 2003.12520v4 |
2021-02-20 | Observation of Coherent Spin Waves in a Three-Dimensional Artificial Spin Ice Structure | Harnessing high-frequency spin dynamics in three-dimensional (3D)
nanostructures may lead to paradigm-shifting, next generation devices including
high density spintronics and neuromorphic systems. Despite remarkable progress
in fabrication, the measurement and interpretation of spin dynamics in complex
3D structures re... | 2102.10270v1 |
2022-04-29 | All-magnonic Stern-Gerlach effect in antiferromagnets | The Stern-Gerlach (SG) effect is well known as the spin-dependent splitting
of a beam of atoms carrying magnetic moments by a magnetic-field gradient,
leading to the concept of electron spin. Antiferromagnets can accommodate two
magnon modes with opposite spin polarizations, which is equivalent to the spin
property of ... | 2204.13942v1 |
2022-11-02 | Spin wave excitations in a nanowire spin-torque oscillator with perpendicular magnetic anisotropy | Spin torque oscillators (STOs) are emerging microwave devices that can
potentially be used in spin-logic devices and the next-generation high-speed
computing architecture. Thanks to their non-linear nature, STOs are easily
tunable by the magnetic field and the dc current. Spin Hall nano-oscillators
(SHNOs) are promisin... | 2211.01078v1 |
2023-02-27 | Spin Hall effects in the sky | In many areas of physics, the propagation of wave packets carrying intrinsic
angular momentum is generally influenced by spin-orbit interactions. This is
the main mechanism behind spin Hall effects, which result in wave packets
following spin-dependent trajectories. Spin Hall effects have been observed in
several exper... | 2302.13634v2 |
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