publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
|---|---|---|---|
2013-06-10 | Testing the validity of the single-spin approximation in inspiral-merger-ringdown waveforms | Gravitational-wave signals from black-hole binaries with non-precessing spins
are described by four parameters -- each black hole's mass and spin. It has
been shown that the dominant spin effects can be modeled by a \emph{single}
spin parameter, leading to the development of several \emph{three-parameter}
waveform mode... | 1306.2320v1 |
2015-12-07 | An anisotropic spin model of strong spin-orbit-coupled triangular antiferromagnets | Motivated by the recent experimental progress on the strong
spin-orbit-coupled rare earth triangular antiferromagnet, we analyze the highly
anisotropic spin model that describes the interaction between the
spin-orbit-entangled Kramers' doublet local moments on the triangular lattice.
We apply the Luttinger-Tisza method... | 1512.02151v3 |
2016-09-20 | Efficiency of nonspinning templates in gravitational wave searches for aligned-spin binary black holes | We study the efficiency of nonspinning waveform templates in gravitational
wave searches for aligned-spin binary black holes (BBHs). We use PhenomD, which
is the most recent phenomenological waveform model designed to generate the
full inspiral-merger-ringdown waveforms emitted from BBHs with the spins
aligned with the... | 1609.06039v2 |
2016-10-21 | An electric-field representation of the harmonic XY model | The two-dimensional harmonic XY (HXY) model is a spin model in which the
classical spins interact via a piecewise parabolic potential. We argue that the
HXY model should be regarded as the canonical classical lattice spin model of
phase fluctuations in two-dimensional condensates, as it is the simplest model
that guara... | 1610.06692v2 |
2017-12-08 | Numerical Relativity Simulations of Precessing Binary Neutron Star Mergers | We present the first set of numerical relativity simulations of binary
neutron mergers that include spin precession effects and are evolved with
multiple resolutions. Our simulations employ consistent initial data in general
relativity with different spin configurations and dimensionless spin magnitudes
$\sim 0.1$. The... | 1712.02992v1 |
2020-04-09 | Massive Spinning Bosons on the Celestial Sphere | A natural extension of the Pasterski-Shao-Strominger (PSS) prescription is
described, enabling the map of Minkowski space amplitudes with massive spinning
external legs to the celestial sphere to be performed. An integral
representation for the conformal primary wave function (CPW) of massive
spinning bosons on the cel... | 2004.04309v2 |
2017-02-14 | Quantum spin liquid and magnetic order in a two-dimensional non-symmorphic lattice: considering the distorted Kagome lattice of Volborthite | The Kagome-lattice-based material, Volborthite, $\mathrm{Cu_3 V_2 O_7 (OH)_2
\cdot 2 H_2 O}$, has been considered as a promising platform for discovery of
unusual quantum ground states due to the frustrated nature of spin
interactions. Here we explore possible quantum spin liquid and magnetically
ordered phases in a tw... | 1702.04360v2 |
2016-11-22 | Gravitational waves and mass ejecta from binary neutron star mergers: Effect of the stars' rotation | We present new (3+1) dimensional numerical relativity simulations of the
binary neutron star (BNS) mergers that take into account the NS spins. We
consider different spin configurations, aligned or antialigned to the orbital
angular momentum, for equal and unequal mass BNS and for two equations of
state. All the simula... | 1611.07367v1 |
2017-04-12 | Absorption and generation of femtosecond laser-pulse excited spin currents in non-collinear magnetic bilayers | Spin currents can be generated on an ultrafast timescale by excitation of a
ferromagnetic (FM) thin film with a femtosecond laser-pulse. Recently, it has
been demonstrated that these ultrafast spin currents can transport angular
momentum to neighbouring FM layers, being able to change both the magnitude and
orientation... | 1704.03746v1 |
2022-04-25 | Scattering phenomena for spin transport in Kitaev spin liquid | The Kitaev model exhibits a canonical quantum spin liquid as a ground state
and hosts two fractional quasiparticles, itinerant Majorana fermion and
localized flux excitation. The former can carry heat and spin modulations in
the quantum spin liquid, but the role of the latter remains unknown for the
transport phenomena... | 2204.11578v1 |
2022-06-01 | Signatures of spin precession and nutation in isolated black-hole binaries | The spin precession of binary black holes (BBHs) that originate from isolated
high-mass binary stars is determined by the interplay of phenomena such as
tides, winds, accretion, common-envelope evolution, natal kicks, and stellar
core-envelope coupling. In previous work, we identified regions of the
parameter space tha... | 2206.00391v2 |
2023-01-18 | Charged magnons on the surface of a topological insulator | We study a system of two-dimensional Dirac electrons (as is realized on the
surface of a 3D topological insulator) coupled to an array of localized spins.
The spins are coupled ferromagnetically to each other, forming an ordered
ground state with low-energy spin-wave excitations (magnons). The Dirac
electrons couple to... | 2301.07754v2 |
2003-01-11 | Coherent transport of neutral atoms in spin-dependent optical lattice potentials | We demonstrate the controlled coherent transport and splitting of atomic wave
packets in spin-dependent optical lattice potentials. Such experiments open
intriguing possibilities for quantum state engineering of many body states.
After first preparing localized atomic wave functions in an optical lattice
through a Mott... | 0301169v1 |
1998-09-02 | Group Theoretical Examination of the Relativistic Wave Equations on Curved Spaces. III. Real reducible spaces | The group theoretical approach to the relativistic wave equations on the real
reducible spaces for spin~0, 1/2 and~1 massless particles is considered. The
invariant wave equations which determine the appropriate irreducible
representations are constructed. The coincidence of these equations with the
general-covariant K... | 9809011v1 |
2011-04-29 | Tail-induced spin-orbit effect in the gravitational radiation of compact binaries | Gravitational waves contain tail effects which are due to the back-scattering
of linear waves in the curved space-time geometry around the source. In this
paper we improve the knowledge and accuracy of the two-body inspiraling
post-Newtonian (PN) dynamics and gravitational-wave signal by computing the
spin-orbit terms ... | 1104.5659v2 |
2014-03-06 | A method for narrow-band searches of continuous gravitational wave signals | Targeted searches of continuous waves from spinning neutron stars normally
assume that the frequency of the gravitational wave signal is at a given known
ratio with respect to the rotational frequency of the source, e.g. twice for an
asymmetric neutron star rotating around a principal axis of inertia. In fact
this assu... | 1403.1484v1 |
2017-07-04 | Dirac electron in a chiral space-time crystal created by counterpropagating circularly polarized plane electromagnetic waves | The family of solutions to the Dirac equation for an electron moving in an
electromagnetic lattice with the chiral structure created by counterpropagating
circularly polarized plane electromagnetic waves is obtained. At any nonzero
quasimomentum, the dispersion equation has two solutions which specify bispinor
wave fun... | 1707.01140v2 |
2016-03-21 | Engineering chiral density waves and topological band structures by multiple-$Q$ superpositions of collinear up-up-down-down orders | Magnetic orders characterized by multiple ordering vectors harbor
noncollinear and noncoplanar spin textures and can be a source of unusual
electronic properties through the spin Berry phase mechanism. We theoretically
show that such multiple-$Q$ states are stabilized in itinerant magnets in the
form of superpositions ... | 1603.06646v1 |
2019-03-11 | Wave Functions and Leptonic Decays of Bottom Mesons In the Relativistic Potential Model | We study the wave functions and purely leptonic decays of $b$-flavored mesons
(pseudoscalars, vector mesons, and higher excited states that are well
established in experiment) in the relativistic potential model based on our
previous works. The wave functions are obtained by solving the wave equation
including the spin... | 1903.04295v1 |
2020-12-15 | Propagation of polarized gravitational waves | The propagation of high-frequency gravitational waves can be analyzed using
the geometrical optics approximation. In the case of large but finite
frequencies, the geometrical optics approximation is no longer accurate, and
polarization-dependent corrections at first order in wavelength modify the
propagation of gravita... | 2012.08363v1 |
2020-12-21 | Inverse Faraday Effect in an Optomagnonic Waveguide | Single-mode high-index-contrast waveguides have been ubiquitously exploited
in optical, microwave, and phononic structures for achieving enhanced
wave-matter interactions. Although micro-scale optomechanical and
electro-optical devices have been widely studied, optomagnonic devices remain a
grand challenge at the micro... | 2012.11119v2 |
2022-12-14 | Measuring neutron-star distances and properties with gravitational-wave parallax | Gravitational-wave astronomy allows us to study objects and events invisible
to electromagnetic waves. So far, only signals triggered by coalescing binaries
have been detected. However, as the interferometers' sensitivities improve over
time, we expect to observe weaker signals in the future, e.g. emission of
continuou... | 2212.07506v3 |
2023-10-16 | Gravitational wave analogues in spin nematics and cold atoms | Many large-scale phenomena in our Universe, such as gravitational waves, are
challenging to reproduce in laboratory settings. However, parallels with
condensed matter systems can provide alternative routes for experimental
accessibility. Here we show how spin nematic phases provide a low-energy avenue
for accessing the... | 2310.10078v1 |
2014-11-11 | Magnonic Charge Pumping via Spin-Orbit Coupling | The interplay between spin, charge, and orbital degrees of freedom has led to
the development of spintronic devices like spin-torque oscillators, spin-logic
devices, and spin-transfer torque magnetic random-access memories. In this
development spin pumping, the process where pure spin-currents are generated
from magnet... | 1411.2779v1 |
2006-07-03 | Persistent current generation by small polarons in a spin-density wave background | Persistent current generation by small polarons embedded in a spin-density
wave background in a two dimensional lattice is theoretically studied. When the
embedded small polarons become cores of merons and antimerons (vortices in spin
configuration with winding numbers +1 and -1, respectively), a spin Berry phase
arise... | 0607033v1 |
2013-05-26 | Final spin and radiated energy in numerical simulations of binary black holes with equal masses and equal, aligned or anti-aligned spins | The behavior of merging black holes (including the emitted gravitational
waves and the properties of the remnant) can currently be computed only by
numerical simulations. This paper introduces ten numerical relativity
simulations of binary black holes with equal masses and equal spins aligned or
anti-aligned with the o... | 1305.5991v2 |
2014-11-15 | Cubic order spin effects in the dynamics and gravitational wave energy flux of compact object binaries | We investigate cubic-in-spin effects for inspiralling compact objects
binaries, both in the dynamics and the energy flux emitted in gravitational
waves, at the leading post-Newtonian order. We use a Lagrangian formalism to
implement finite-size effects, and extend it at cubic order in the spins, which
corresponds to th... | 1411.4118v2 |
2021-12-10 | Observation and control of collective spin-wave mode-hybridisation in chevron arrays and square, staircase and brickwork artificial spin ices | Dipolar magnon-magnon coupling has long been predicted in nano-patterned
artificial spin systems. However, observation of such phenomena and related
collective spin-wave signatures have until recently proved elusive or limited
to low-power edge-modes which are difficult to measure experimentally. Here we
describe the r... | 2112.05354v1 |
2023-09-04 | Unconventional p-wave magnets | The electronic structure of atoms is organized into even and odd-parity-wave
s, p, d, ... orbitals. An analogous classification of condensed matter phases
emerged with the discovery of conventional s-wave superconductivity in mercury,
followed by the discoveries of unconventional p-wave superfluidity in $^{3}$He
and un... | 2309.01607v2 |
2001-10-22 | Non-resonant nonlinear coupling of magnetohydrodynamic waves in inhomogeneous media | A new mechanism for the enhanced generation of compressible fluctuations by
Alfven waves is presented. A strongly nonlinear regime of Alfven wave
phase-mixing is numerically simulated in a one-dimensionally inhomogeneous
plasma of finite temperature. It is found that the inhomogeneity of the medium
determines the effic... | 0110493v1 |
2004-01-28 | Spiral wave drift in an electric field and scroll wave instabilities | I present the numerical computation of speed and direction of the drift of a
spiral wave in an excitable medium in the presence of an electric field. In
contrast to earlier results, the drift speed presents a strong variation close
to the parameter value where the drift speed component along the field changes
direction... | 0401588v2 |
2005-07-21 | One-band Hubbard model with hopping asymmetry and the effective theory at finite U: Phase diagram and metal-insulator transition | We study the one-band Hubbard model at half filling with hopping asymmetry
and its effective model at finite but large U up to the second order of tmix/U.
Two variational wave functions, the resonating valence bond (RVB) wave function
and antiferromagnetic (AF) RVB coexisted wave function, are studied by
variational Mo... | 0507494v1 |
2003-07-05 | Light cone nucleon wave function in the quark-soliton model | The light-cone wave function of the nucleon is calculated in the limit
N_c -> infinity in the quark-soliton model inspired by the theory of the
instanton vacuum of QCD. The technique of the finite time evolution operator is
used in order to derive expressions for all components of the Fock vector
describing the nucle... | 0307077v2 |
2006-11-17 | Laminated Wave Turbulence: Generic Algorithms II | The model of laminated wave turbulence puts forth a novel computational
problem - construction of fast algorithms for finding exact solutions of
Diophantine equations in integers of order $10^{12}$ and more. The equations to
be solved in integers are resonant conditions for nonlinearly interacting waves
and their form ... | 0611042v1 |
2002-07-26 | Landau damping of partially incoherent Langmuir waves | It is shown that partial incoherence, in the form of stochastic phase noise,
of a Langmuir wave in an unmagnetized plasma gives rise to a Landau-type
damping. Starting from the Zakharov equations, which describe the nonlinear
interaction between Langmuir and ion-acoustic waves, a kinetic equation is
derived for the pla... | 0207050v1 |
2007-08-28 | Resonantly damped surface and body MHD waves in a solar coronal slab with oblique propagation | The theory of magnetohydrodynamic (MHD) waves in solar coronal slabs in a
zero-$\beta$ configuration and for parallel propagation of waves does not allow
the existence of surface waves. When oblique propagation of perturbations is
considered both surface and body waves are able to propagate. When the
perpendicular wave... | 0708.3783v1 |
2010-08-05 | Linear and Non-Linear Landau Resonance of Kinetic Alfvén Waves: Consequences for Electron Distribution and Wave Spectrum in the Solar Wind | Kinetic Alfven wave turbulence in solar wind is considered and it is shown
that non-Maxwellian electron distribution function has a significant effect on
the dynamics of the solar wind plasmas. Linear Landau damping leads to the
formation of a plateau in the parallel electron distribution function which
diminishes the ... | 1008.0993v1 |
2011-04-14 | Asymptotic Behavior of Massless Dirac Waves in Schwarzschild geometry | In this paper, we show that massless Dirac waves in the Schwarzschild
geometry decay to zero at a rate $t^{-2\lambda}$, where $\lambda=1, 2,...$ is
the angular momentum. Our technique is to use Chandrasekhar's separation of
variables whereby the Dirac equations split into two sets of wave equations.
For the first set, ... | 1104.2772v1 |
2012-08-02 | Co-existence of Whistler Waves with Kinetic Alfven Wave Turbulence for the High-beta Solar Wind Plasma | It is shown that the dispersion relation for whistler waves is identical for
a high or low beta plasma. Furthermore in the high-beta solar wind plasma
whistler waves meet the Landau resonance with electrons for velocities less
than the thermal speed, and consequently the electric force is small compared
to the mirror f... | 1208.0623v1 |
2014-10-28 | Quantitative Relation between Modulational Instability and Several Well-known Nonlinear Excitations | We study on the relations between modulational instability and several
well-known nonlinear excitations in a nonlinear fiber, such as bright soliton,
nonlinear continuous wave, Akhmediev breather, Peregrine rogue wave, and
Kuznetsov-Ma breather. We present a quantitative correspondence between them
based on the dominan... | 1410.7536v3 |
2015-02-13 | Baseband Modulation Instability as the Origin of Rogue Waves | We study the existence and properties of rogue wave solutions in different
nonlinear wave evolution models that are commonly used in optics and
hydrodynamics. In particular, we consider Fokas-Lenells equation, the
defocusing vector nolinear Schr\"odinger equation, and the long-wave-short-wave
resonance equation. We sho... | 1502.03915v1 |
2015-03-03 | Nonlinear acoustic wave generation in a three-phase seabed | Generation of an acoustic wave by two pump sound waves is studied in a
three-phase marine sediment that consists of a solid frame and the pore water
with air bubbles in it. To avoid shock-wave formation the interaction is
considered in the frequency range where there is a significant amount of sound
velocity dispersion... | 1503.00901v1 |
2016-01-05 | Vlasov Simulations of Electron-Ion Collision Effects on Damping of Electron Plasma Waves | Collisional effects can play an essential role in the dynamics of plasma
waves by setting a minimum damping rate and by interfering with wave-particle
resonances. Kinetic simulations of the effects of electron-ion pitch angle
scattering on Electron Plasma Waves (EPWs) are presented here. In particular,
the effects of s... | 1601.01002v1 |
2016-04-23 | Surface-wave pulse routing around sharp corners | The ability to perfectly guide surface electromagnetic waves around
ultra-sharp corners without back-scattering and radiation is in great demand
for various photonic and plasmonic applications. This is fundamentally
difficult to realize because of the dramatic momentum mismatch and wave nature
of radiation at the sharp... | 1604.06872v2 |
2018-07-31 | Measurement of interfacial wave dynamics in orbitally shaken cylindrical containers using ultrasound pulse-echo techniques | We present a novel experiment on interfacial wave dynamics in orbitally
shaken cylindrical vessels containing two- and three fluid layers. The
experiment was designed as a hydrodynamical model for both alu- minum reduction
cells and liquid metal batteries to gain new insights into the rotational wave
motion driven by t... | 1807.11768v1 |
2014-06-14 | Energy spectrum of ensemble of weakly nonlinear gravity-capillary waves on a fluid surface | In this Letter we regard nonlinear gravity-capillary waves with parameter of
nonlinearity being $\varepsilon \sim 0.1 \div 0.25$. For this nonlinearity time
scale separation does not occur and kinetic wave equation does not hold. An
energy cascade in this case is built at the dynamic time scale (D-cascade) and
is compu... | 1406.3779v1 |
2016-12-06 | Alfvén Waves in the Structured Solar Corona | A simple model of a periodic ensemble of closely packed flux tubes sitting
atop a vertically stratified layer reveals that an incident fast wave from
below preferentially converts almost immediately to Alfv\'en waves in the flux
tubes, with kink waves restricted to at most a very few Fourier modes. This
suggests that o... | 1612.02064v1 |
2017-02-24 | Instabilities of Internal Gravity Wave Beams | Internal gravity waves play a primary role in geophysical fluids: they
contribute significantly to mixing in the ocean and they redistribute energy
and momentum in the middle atmosphere. Until recently, most studies were
focused on plane wave solutions. However, these solutions are not a
satisfactory description of mos... | 1702.07762v2 |
2021-04-29 | Forward Wave Amplification Enhanced Radiation in a 1 THz Harmonic Gyrotron | Among the most promising terahertz (THz) radiation devices, gyrotrons can
generate powerful THz-wave radiation in an open resonant structure.
Unfortunately, such an oscillation using high-Q axial mode has been
theoretically and experimentally demonstrated to suffer from strong ohmic
losses. In this paper, a solution to... | 2104.14108v1 |
2020-02-10 | Plasmon Oscillations and de Broglie's Matter Waves Instabilities | In this research we study the effect of matter-wave instability on electron
beam transport with arbitrary degree of degeneracy. Particular class of
solutions of the Schr\"{o}dinger-Poisson system is used to model the
electron-beam transport at constant speed. It is shown that such electron-beam
is described by a couple... | 2002.04690v4 |
2020-06-19 | Gravitational waves affect vacuum entanglement | The entanglement harvesting protocol is an operational way to probe vacuum
entanglement. This protocol relies on two atoms, modelled by Unruh-DeWitt
detectors, that are initially unentangled. These atoms then interact locally
with the field and become entangled. If the atoms remain spacelike separated,
any entanglement... | 2006.11301v1 |
2020-12-01 | New developments in model-independent Partial-Wave Analysis | Partial-wave analyses (PWA) are an essential tool for studying resonance
structures in decays with hadronic multi-body final states. For several years,
more model-independent approaches to such analyses have been used for various
decay final states. However, up to now, these methods have mostly been applied
to sub-sets... | 2012.00474v1 |
2021-10-30 | Wave-particle interactions in quantum plasmas | Wave-particle interaction (WPI) is one of the most fundamental processes in
plasma physics in which one most prominent example is the Landau damping. Owing
to its excellent energy-exchange mechanism, the WPI has gained increasing
interest not only from theoretical points of view but also its many important
applications... | 2111.00196v2 |
2021-11-15 | Internal wave crystals | Geophysical fluids such as the ocean and atmosphere can be stratified: their
density depends on the depth. As a consequence, they can host internal gravity
waves that propagate in the bulk of the fluid, far from the surface. These
waves can transport energy and momentum over large distances, thereby affecting
large-sca... | 2111.07984v1 |
2022-03-04 | Electron acceleration from the interaction of three crossed parallel Alfvén waves | We study the non-linear interaction of three parallel Alfv\'en wave packets
(AWP) in an initially uniform plasma using 2.5D particle-in-a-cell (PIC)
numerical simulations. We aim to help to explain the observation of
suprathermal electrons by multiple Alfv\'en waves collision in regions where
these waves are trapped li... | 2203.02575v1 |
2022-03-24 | Gyrokinetic Theory of Low-frequency Electromagnetic Waves in Finite-$β$ Anisotropic Plasmas | We present a gyrokinetic theory for the electromagnetic waves and
instabilities with frequencies much lower than the ion cyclotron frequency in
finite-$\beta$ anisotropic uniform plasmas. Here, $\beta$ is the ratio between
plasma and magnetic pressures. Kinetic effects due to both the finite Larmor
radii and wave-parti... | 2203.12953v1 |
2022-04-04 | On the stability of the periodic waves for the Benney system | We analyze the Benney model for interaction of short and long waves in
resonant water wave interactions. Our particular interest is in the periodic
traveling waves, which we construct and study in detail. The main results are
that, for all natural values of the parameters, the periodic dnoidal waves are
spectrally stab... | 2204.01628v1 |
2022-05-21 | Electric Current Induced by Microwave Stark Effect of Electrons on Liquid Helium | We propose a frequency-mixed effect of Terahertz (THz) and Gigahertz (GHz)
electromagnetic waves in the cryogenic system of electrons floating on liquid
helium surface. The THz wave is near-resonant with the transition frequency
between the lowest two levels of surface state electrons. The GHz wave does not
excite the ... | 2205.10557v1 |
2022-08-10 | Alfvénic waves in the inhomogeneous solar atmosphere | The solar atmosphere is known to be replete with magneto-hydrodynamic wave
modes, and there has been significant investment in understanding how these
waves propagate through the Sun's atmopshere and deposit their energy into the
plasma. The waves' journey is made interesting by the vertical variation in
plasma quantit... | 2208.05222v2 |
2023-07-01 | Interaction of interfacial waves with an external force: The Benjamin-Ono equation framework | This study aims to explore the complex interactions between an internal
solitary wave and an external force using the Benjamin-Ono equation as the
theoretical framework. The investigation encompasses both asymptotic and
numerical approaches. By assuming a small amplitude for the external force, we
derive a dynamical sy... | 2307.00326v1 |
2023-09-12 | Energy spectra of non-local internal gravity wave turbulence | Starting from the classical formulation of the weak turbulence theory in a
density stratified fluid, we derive a simplified version of the kinetic
equation of internal gravity wave turbulence. This equation allows us to
uncover scaling laws for the spatial and temporal energy spectra of internal
wave turbulence which a... | 2309.06181v2 |
2024-04-12 | Observation of Alfvén Wave Reflection in the Solar Chromosphere: Ponderomotive Force and First Ionization Potential Effect | We investigate the propagation of Alfv\'en waves in the solar chromosphere,
distinguishing between upward and downward propagating waves. We find clear
evidence for the reflection of waves in the chromosphere and differences in
propagation between cases with waves interpreted to be resonant or nonresonant
with the over... | 2404.08305v1 |
2003-07-28 | Exciton spin relaxation in resonantly excited CdTe/ZnTe self-assembled quantum dots | We study the exciton spin relaxation in CdTe self-assembled quantum dots by
using polarized photoluminescence spectroscopy in magnetic field. The
experiments on single CdTe quantum dots and on large quantum dot ensembles show
that by combining phonon-assisted absorption with circularly polarized resonant
excitation the... | 0307674v1 |
2009-06-08 | SU(2) slave-boson formulation of spin nematic states in S=1/2 frustrated ferromagnets | An SU(2) slave boson formulation of bond-type spin nematic orders is
developed in frustrated ferromagnets, where the spin nematic states are
described as the resonating spin-triplet valence bond (RVB) states. The
d-vectors of spin-triplet pairing ansatzes play the role of the directors in
the bond-type spin quadrupolar... | 0906.1248v3 |
2010-09-01 | Probing spin relaxation in an individual InGaAs quantum dot using a single electron optical spin memory device | We demonstrate all optical electron spin initialization, storage and readout
in a single self-assembled InGaAs quantum dot. Using a single dot charge
storage device we monitor the relaxation of a single electron over long
timescales exceeding 40{\mu}s. The selective generation of a single electron in
the quantum dot is... | 1009.0207v1 |
2015-02-10 | Disentangling relativistic spin torques in a ferromagnet/semiconductor bilayer | Recently discovered relativistic spin torques induced by a lateral current at
a ferromagnet/paramagnet interface are a candidate spintronic technology for a
new generation of electrically-controlled magnetic memory devices.
Phenomenologically, the torques have field-like and antidamping-like components
with distinct sy... | 1502.02870v1 |
2015-08-21 | Nuclear spin decoherence of neutral $^{31}$P donors in silicon: Effect of environmental $^{29}$Si nuclei | Spectral diffusion arising from $^{29}$Si nuclear spin flip-flops, known to
be a primary source of electron spin decoherence in silicon, is also predicted
to limit the coherence times of neutral donor nuclear spins in silicon. Here,
the impact of this mechanism on $^{31}$P nuclear spin coherence is measured as
a functi... | 1508.05362v1 |
2015-08-31 | Spin Response to Localized Pumps: Exciton Polaritons Versus Electrons and Holes | Polariton polarization can be described in terms of a pseudospin which can be
oriented along the $x,\,y,$ or $z$ axis, similarly to electron and hole spin.
Unlike electrons and holes where time-reversal symmetry requires that the
spin-orbit interaction be odd in the momentum, the analogue of the spin-orbit
interaction ... | 1508.07863v2 |
2016-06-10 | Large Stark tuning of donor electron spin quantum bits in germanium | Donor electron spins in semiconductors make exceptional quantum bits because
of their long coherence times and compatibility with industrial fabrication
techniques. Despite many advances in donor-based qubit technology, it remains
difficult to selectively manipulate single donor electron spins. Here, we show
that by re... | 1606.03314v2 |
2017-12-14 | Determination of the spin Hall angle in single-crystalline Pt films from spin pumping experiments | We report on the determination of the spin Hall angle and the identification
of the role of the interface roughness for the inverse spin Hall effect (ISHE)
in ultra-clean, defect-reduced epitaxial Pt films. By applying vector network
analyzer ferromagnetic resonance spectroscopy to a series of single crystalline
Fe (12... | 1712.05334v2 |
2018-08-02 | Generation of pure superconducting spin current in magnetic heterostructures via non-locally induced magnetism due to Landau Fermi-liquid effects | We propose a mechanism for the generation of pure superconducting
spin-current carried by equal-spin triplet Cooper pairs in a superconductor (S)
sandwiched between a ferromagnet (F) and a normal metal (N$_{\rm so}$) with
intrinsic spin-orbit coupling. We show that in the presence of Landau
Fermi-liquid interactions th... | 1808.01045v1 |
2017-02-20 | Valley dependent anisotropic spin splitting in silicon quantum dots | Spin qubits hosted in silicon (Si) quantum dots (QD) are attractive due to
their exceptionally long coherence times and compatibility with the silicon
transistor platform. To achieve electrical control of spins for qubit
scalability, recent experiments have utilized gradient magnetic fields from
integrated micro-magnet... | 1702.06210v2 |
2021-07-13 | Investigation of spin-phonon coupling and local magnetic properties in magnetoelectric Fe2TeO6 | Spin-phonon coupling originated from spin-lattice correlation depends upon
different exchange interactions in transition metal oxides containing 3d
magnetic ions. Spin-lattice coupling can influence the coupling mechanism in
magnetoelectric material. To understand the spin-lattice correlation in inverse
trirutile Fe2Te... | 2107.06269v2 |
2022-11-22 | Generation of out-of-plane polarized spin current by spin swapping | The generation of spin currents and their application to the manipulation of
magnetic states is fundamental to spintronics. Of particular interest are
chiral antiferromagnets that exhibit properties typical of ferromagnetic
materials even though they have negligible magnetization. Here, we report the
generation of a ro... | 2211.12398v1 |
2023-01-19 | RIXS observation of bond-directional nearest-neighbor excitations in the Kitaev material Na$_2$IrO$_3$ | Spin-orbit coupling locks spin direction and spatial orientation and
generates, in semi-classical magnets, a local spin easy-axis and associated
ordering. Quantum spin-1/2's defy this fate: rather than spins becoming locally
anisotropic, the spin-spin interactions do. Consequently interactions become
dependent on the s... | 2301.08340v1 |
2023-07-17 | Nematic spin correlations pervading the phase diagram of FeSe$_{1-x}$S$_{x}$ | We use resonant inelastic X-ray scattering (RIXS) at the Fe-L$_3$ edge to
study the spin excitations of uniaxial-strained and unstrained
FeSe$_{1-x}$S$_{x}$ ($0\leq x\leq0.21$) samples. The measurements on unstrained
samples reveal dispersive spin excitations in all doping levels, which show
only minor doping dependenc... | 2307.08181v1 |
2023-07-28 | Superconducting-Spin Reorientation in Spin-Triplet Multiple Superconducting Phases of UTe2 | Superconducting (SC) state has spin and orbital degrees of freedom, and
spin-triplet superconductivity shows multiple SC phases due to the presence of
these degrees of freedom. However, the observation of spin-direction rotation
occurring inside the SC state (SC spin rotation) has hardly been reported.
UTe2, a recently... | 2307.15784v1 |
2022-01-31 | Precisely computing bound orbits of spinning bodies around black holes I: General framework and results for nearly equatorial orbits | Very large mass ratio binary black hole systems are of interest both as a
clean limit of the two-body problem in general relativity, as well as for their
importance as sources of low-frequency gravitational waves. At lowest order,
the smaller body moves along a geodesic of the larger black hole's spacetime.
Post-geodes... | 2201.13334v2 |
2018-02-16 | Light isovector resonances in $π^- p \to π^-π^-π^+ p$ at 190 GeV/${\it c}$ | We have performed the most comprehensive resonance-model fit of
$\pi^-\pi^-\pi^+$ states using the results of our previously published
partial-wave analysis (PWA) of a large data set of diffractive-dissociation
events from the reaction $\pi^- + p \to \pi^-\pi^-\pi^+ + p_\text{recoil}$ with
a 190 GeV/$c$ pion beam. The ... | 1802.05913v2 |
2003-06-08 | Spin-exchange interactions of spin-one bosons in optical lattices: singlet, nematic and dimerized Phases | We consider insulating phases of cold spin-1 bosonic particles with
antiferromagnetic interactions, such as Na-23, in optical lattices. We show
that spin-exchange interactions give rise to several distinct phases, which
differ in their spin correlations. In two- and three- dimensional lattices
insulating phases with od... | 0306204v2 |
2003-11-26 | Topological spin pumps I | We have established a semiclassical kinetic approach for various spin
correlated pumping phenomena incorporating spin rotation in wave functions into
transport equations. We employ this technique to study topological pumps and
illustrate spin pumping in a few models where various spin configurations or
topological moto... | 0311612v3 |
2005-02-08 | Monte Carlo Simulations of Spin-Diffusion in a 2-D Heisenberg Paramagnet | We study spin diffusion and spin waves in paramagnetic quantum crystals
(solid He-3, for example) by direct simulation of a square lattice of atoms
interacting via a nearest-neighbor Heisenberg exchange Hamiltonian. Recently,
Cowan and Mullin have used a moments method to study spin transport at
arbitrary polarizations... | 0502214v1 |
2005-06-27 | Spin transverse force on spin current in an electric field | As a relativistic quantum mechanical effect, it is shown that the electric
field exerting a transverse force on an electron spin 1/2 only if the electron
is moving and the spin is polarized along the electric field. The spin force,
analogue to the Lorentz for on an electron charge in a magnetic field, is
perpendicular ... | 0506676v2 |
2006-03-14 | Spin-orbit lateral superlattices: energy bands and spin polarization in 2DEG | The Bloch spinors, energy spectrum and spin density in energy bands are
studied for the two-dimensional electron gas (2DEG) with Rashba spin-orbit (SO)
interaction subject to one-dimensional (1D) periodic electrostatic potential of
a lateral superlattice. The space symmetry of the Bloch spinors with spin
parity is stud... | 0603364v1 |
2006-05-29 | Disturbance of spin equilibrium by current through the interface of noncollinear ferromagnets | Boundary conditions are derived that determine the penetration of spin
current through an interface of two non-collinear ferromagnets with an
arbitrary angle between their magnetization vectors. We start from the
well-known transformation properties of an electron spin wave functions under
the rotation of a quantizatio... | 0605694v2 |
2006-12-08 | Spin transport in Heisenberg antiferromagnets | We analyze spin transport in insulating antiferromagnets described by the XXZ
Heisenberg model in two and three dimensions. Spin currents can be generated by
a magnetic-field gradient or, in systems with spin-orbit coupling,
perpendicular to a time-dependent electric field. The Kubo formula for the
longitudinal spin co... | 0612215v1 |
2003-04-21 | Spin symmetry in the anti-nucleon spectrum | We discuss spin and pseudo-spin symmetry in the spectrum of single nucleons
and single anti-nucleons in a nucleus. As an example we use relativistic mean
field theory to investigate single anti-nucleon spectra. We find a very well
developed spin symmetry in single anti-neutron and single anti-proton spectra.
The domina... | 0304067v2 |
2008-07-08 | Spin rotation, spin filtering, and spin transfer in directional tunneling through non-centrosymmetric semiconductor barriers | We consider spin-dependent tunneling through a gallium arsenide barrier, a
material which has no inversion symmetry. We are dealing with free electrons,
with one effective mass and a spin-splitting in the barrier material. When we
take into account both the spin-orbit interaction and the absence of the
inversion symmet... | 0807.1243v3 |
2010-03-01 | The qubit states decoherence in antiferromagnet-based nuclear spin model of quantum register | This study deals with the further development of nuclear spin model of
scalable quantum register, which presents the one-dimensional chain of the
magnetic atoms with nuclear spins 1/2, substituting the basic atoms in the
plate of nuclear spin-free easy-axis 3D antiferromagnet. The decoherence rates
of one qubit state a... | 1003.0170v2 |
2010-04-03 | Spin-selective Peierls transition in interacting one-dimensional conductors with spin-orbit interaction | Interacting one-dimensional conductors with Rashba spin-orbit coupling are
shown to exhibit a spin-selective Peierls-type transition into a mixed
spin-charge-density-wave state. The transition leads to a gap for one-half of
the conducting modes, which is strongly enhanced by electron-electron
interactions. The other ha... | 1004.0467v2 |
2010-04-08 | Coupling of bonding and antibonding electron orbitals in double quantum dots by spin-orbit interaction | We perform a systematic exact diagonalization study of spin-orbit coupling
effects for stationary few-electron states confined in quasi two-dimensional
double quantum dots. We describe the spin-orbit-interaction induced coupling
between bonding and antibonding orbitals and its consequences for
magneto-optical absorptio... | 1004.1250v1 |
2011-10-06 | Spin and pseudospin symmetry along with orbital dependency of the Dirac-Hulthen problem | The role of the Hulthen potential on the spin and pseudospin symmetry
solutions is investigated systematically by solving the Dirac equation with
attractive scalar S(r) and repulsive vector V(r) potentials. The spin and
pseudospin symmetry along with orbital dependency (pseudospin-orbit and
spin-orbit dependent couplin... | 1110.1225v1 |
2012-03-21 | Persistent narrowing of nuclear-spin fluctuations in InAs quantum dots using laser excitation | We demonstrate the suppression of nuclear spin fluctuations in an InAs
quantum dot and measure the timescales of the spin narrowing effect. By
initializing for tens of milliseconds with two continuous wave diode lasers,
fluctuations of the nuclear spins are suppressed via the hole assisted dynamic
nuclear polarization ... | 1203.4742v1 |
2012-08-27 | Non-adiabatically driven electron in quantum wire with spin-orbit interaction | An exact solution is derived for the wave function of an electron in a
semiconductor quantum wire with spin-orbit interaction and driven by external
time dependent harmonic confining potential. The formalism allows analytical
expressions for various quantities to be derived, such as spin and pseudo-spin
rotations, ener... | 1208.5359v1 |
2012-12-15 | Transverse spin gradient functional for non-collinear spin density functional theory | We present a novel functional for spin density functional theory aiming at
the description of non-collinear magnetic structures. The construction of the
functional employs the spin-spiral-wave state of the uniform electron gas as
reference system. We show that the functional depends on transverse gradients
of the spin ... | 1212.3658v2 |
2012-12-21 | Next-to-next-to-leading order spin-orbit effects in the near-zone metric and precession equations of compact binaries | We extend our previous work devoted to the computation of the
next-to-next-to-leading order spin-orbit correction (corresponding to 3.5PN
order) in the equations of motion of spinning compact binaries, by: (i)
Deriving the corresponding spin-orbit terms in the evolution equations for the
spins, the conserved integrals ... | 1212.5520v2 |
2013-04-25 | Spin blocker made of semiconductor double quantum well using the Rashba effect | We propose a lateral spin-blockade device that uses an InGaAs/InAlAs double
quantum well (DQW), where the values of the Rashba spin-orbit parameter
$\alpha_{\rm R}$ are opposite in sign but equal in magnitude between the
constituent quantum wells (QW). By tuning the channel length of DQW and the
magnitude of the extern... | 1304.6992v1 |
2013-10-23 | Effect of Quantum Spin Fluctuation on Scalar Chiral Ordering in the Kondo Lattice Model on a Triangular Lattice | Spin scalar chiral ordering gives rise to nontrivial topological characters
and peculiar transport properties. We here examine how quantum spin
fluctuations affect the spin scalar chiral ordering in itinerant electron
systems. We take the Kondo lattice model on a triangular lattice, and perform
the linear spin wave ana... | 1310.6292v1 |
2013-12-27 | Spin Transfer Torque and Electric Current in Helical Edge States in Quantum Spin Hall Devices | We study the dynamics of a quantum spin Hall edge coupled to a magnet with
its own dynamics. Using spin transfer torque principles, we analyze the
interplay between spin currents in the edge state and dynamics of the axis of
the magnet, and draw parallels with circuit analogies. As a highlighting
feature, we show that ... | 1312.7303v1 |
2014-03-13 | Coupling theory of emergent spin electromagnetic field and electromagnetic field | In ferromagnetic metals, an effective electromagnetic field which couples to
conduction electron spin is induced by the sd exchange interaction. We
investigate how this effective field, spin electromagnetic field, interacts
with the ordinary electromagnetic field by deriving an effective Hamiltonian
based on the path-i... | 1403.3214v3 |
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