publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
|---|---|---|---|
2017-07-27 | Are the observed black hole mergers spins consistent with field binary progenitors? | One of the puzzles in the recent observations of gravitational waves from
binary black hole mergers is the observed low (projected) spins of the
progenitor black holes. In two of the four events, GW150914, and the recent
GW170104, the observed spins are most likely negative (but consistent with
zero). In the third case... | 1707.08978v1 |
2008-06-27 | Controllable spin-current blockade in a Hubbard chain | We investigate the spin/charge transport in a one-dimensional strongly
correlated system by using the adaptive time-dependent density-matrix
renormalization group method. The model we consider is a non-half-filled
Hubbard chain with a bond of controllable spin-dependent electron hoppings,
which is found to cause a bloc... | 0806.4494v1 |
2021-06-14 | Quantum spin liquid in an RKKY-coupled two-impurity Kondo system | We consider a 2-impurity Kondo system with spin-exchange coupling within the
conduction band. Our numerical renormalization group calculations show that for
strong intraband spin correlations the competition of these correlations with
Kondo spin screening stabilizes a metallic spin-liquid phase of the localized
spins w... | 2106.07519v3 |
2021-12-06 | Unified formulation of interfacial magnonic pumping from non-collinear magnets | We establish a general formulation for spin current pumped by magnons at the
interface between a normal metal and a magnetic insulator, valid for any
non-collinear magnetic configuration in the linear spin wave regime. This
current is generated by driving the system in a non-equilibrium state, covering
setups such as t... | 2112.02946v1 |
2024-02-06 | The spin alignment of rho mesons in a pion gas | We study the spin alignment of neutral rho mesons in a pion gas using spin
kinetic or Boltzmann equations. The $\rho\pi\pi$ coupling is given by the
chiral effective theory. The collision terms at the leading and next-to-leading
order in spin Boltzmann equations are derived. The evolution of the spin
density matrix of ... | 2402.03672v1 |
1999-01-14 | Gravitational waves from a test particle scattered by a neutron star: Axial mode case | Using a metric perturbation method, we study gravitational waves from a test
particle scattered by a spherically symmetric relativistic star. We calculate
the energy spectrum and the waveform of gravitational waves for axial modes.
Since metric perturbations in axial modes do not couple to the matter fluid of
the star,... | 9901040v2 |
2001-11-16 | Resonances and superlattice pattern stabilization in two-frequency forced Faraday waves | We investigate the role weakly damped modes play in the selection of Faraday
wave patterns forced with rationally-related frequency components m*omega and
n*omega. We use symmetry considerations to argue for the special importance of
the weakly damped modes oscillating with twice the frequency of the critical
mode, and... | 0111039v2 |
2009-04-17 | On electromagnetic instabilities at ultra-relativistic shock waves | (Abridged) This paper addresses the issue of magnetic field generation in a
relativistic shock precursor through micro-instabilities. The level of
magnetization of the upstream plasma turns out to be a crucial parameter,
notably because the length scale of the shock precursor is limited by the
Larmor rotation of the ac... | 0904.2657v2 |
2017-07-19 | Toward Microphononic Circuits on Chip: An Evaluation of Components based on High-Contrast Evanescent Confinement of Acoustic Waves | We investigate the prospects for micron-scale acoustic wave components and
circuits on chip in solid planar structures that do not require suspension. We
leverage evanescent guiding of acoustic waves by high slowness contrast
materials readily available in silicon complementary metal-oxide semiconductor
(CMOS) processe... | 1707.06280v1 |
2019-06-14 | Resonant Decay of Gravitational Waves into Dark Energy | We study the decay of gravitational waves into dark energy fluctuations
$\pi$, taking into account the large occupation numbers. We describe dark
energy using the effective field theory approach, in the context of generalized
scalar-tensor theories. When the $m_3^3$ (cubic Horndeski) and $\tilde m_4^2$
(beyond Horndesk... | 1906.07015v2 |
2013-04-11 | Intrinsic Spin Hall Effect at Oxide Interfaces: a Simple Model | An asymmetric triangular potential well provides the simplest model for the
confinement of mobile electrons at the interface between two insulating oxides,
such as LaAlO_3 and SrTiO_3 (LAO/STO). These electrons have been recently shown
to exhibit a large spin-orbit coupling of the Rashba type, i.e., linear in the
in-pl... | 1304.3476v2 |
2016-08-03 | Coupling a Surface Acoustic Wave to an Electron Spin in diamond via a Dark State | The emerging field of quantum acoustics explores interactions between
acoustic waves and artificial atoms and their applications in quantum
information processing. In this experimental study, we demonstrate the coupling
between a surface acoustic wave (SAW) and an electron spin in diamond by taking
advantage of the str... | 1608.01356v1 |
2017-06-05 | Distinguishing Spin-Aligned and Isotropic Black Hole Populations With Gravitational Waves | The first direct detections of gravitational waves from merging binary black
holes open a unique window into the binary black hole formation environment.
One promising environmental signature is the angular distribution of the black
hole spins; systems formed through dynamical interactions among already-compact
objects... | 1706.01385v2 |
2020-06-12 | Spin Excitations and Spin Wave Gap in the Ferromagnetic Weyl Semimetal Co$_3$Sn$_2$S$_2$ | We report a comprehensive neutron scattering study on the spin excitations in
the magnetic Weyl semimetal Co$_3$Sn$_2$S$_2$ with quasi-two-dimensional
structure. Both in-plane and out-of-plane dispersions of the spin waves are
revealed in the ferromagnetic state, similarly dispersive but damped spin
excitations persist... | 2006.07339v2 |
2022-09-06 | The population properties of spinning black holes using Gravitational-wave Transient Catalog 3 | Binary black holes formed via different pathways are predicted to have
distinct spin properties. Measuring these properties with gravitational waves
provides an opportunity to unveil the origins of binary black holes. Recent
work draws conflicting conclusions regarding the spin distribution observed by
LIGO--Virgo--KAG... | 2209.02206v2 |
2004-09-02 | Excitation of Disk Oscillations by Warps: A Model of kHz QPOs | The amplification of disk oscillations resulting from non-linear resonant
couplings between the oscillations and a warp is examined. The disks are
geometrically thin and general relativistic with non-rotating central objects.
By using a Lagrangian formulation, a general stability criterion is derived.
The criterion is ... | 0409051v2 |
2004-10-07 | Boson-Fermion Resonance Model in One Dimension | We discuss the BCS-BEC crossover for one-dimensional spin 1/2 fermions at
zero temperature using the Boson-Fermion resonance model in one dimension. We
show that in the limit of a broad resonance, this model is equivalent to an
exactly solvable single channel model, the so-called modified Gaudin-Yang
model. We argue th... | 0410183v1 |
2007-02-20 | Impurity resonant state in d-wave superconductors: in favor of a Kondo-like response | We investigate the impurity resonant state induced by non-magnetic impurities
in d-wave cuprate superconductors in two different impurity models: (i) in a
pure potential scattering model within the T-matrix approach and (ii) in a
Bose-Fermi Kondo model within the large-N formalism. We modify the
superconducting host to... | 0702457v1 |
2000-06-12 | Searching for Narrow Graviton Resonances with the ATLAS Detector at the Large Hadron Collider | A spectrum of massive graviton states is present in several recent
theoretical models that include extra space dimensions. In some such models the
graviton states are well separated in mass, and can be detected as resonances
in collider experiments. The ability of the ATLAS detector at the Large Hadron
Collider to iden... | 0006114v2 |
2008-10-27 | Investigation of resonant and transient phenomena in Josephson junction flux qubits | We present an analytical and computational study of resonances and transient
responses in a classical Josephson junction system. A theoretical basis for
resonances in a superconducting loop with three junctions is presented,
outlining both the direct relationship between the dynamics of single- and
multi-junction syste... | 0810.4731v2 |
2010-08-30 | A closer look at string resonances in dijet events at the LHC | The first string excited state can be observed as a resonance in dijet
invariant mass distributions at the LHC, if the scenario of low-scale string
with large extra dimensions is realized. A distinguished property of the dijet
resonance by string excited states from that the other "new physics" is that
many almost dege... | 1008.4989v2 |
2011-11-28 | Bayesian inference of the resonance content of p(gamma,K^+)Lambda | A Bayesian analysis of the world's p(gamma,K^+)Lambda data is presented. From
the proposed selection of 11 resonances, we find that the following nucleon
resonances have the highest probability of contributing to the reaction:
S11(1535), S11(1650), F15(1680), P13(1720), D13(1900), P13(1900), P11(1900),
and F15(2000). W... | 1111.6511v2 |
2012-11-09 | Observation of interspecies Li-Cs Feshbach resonances | We report on the observation of nineteen interspecies Feshbach resonances in
an optically trapped ultracold Bose-Fermi mixture of ^{133}Cs and ^{6}Li in the
two energetically lowest spin states. We assign the resonances to s- and p-wave
molecular channels by a coupled-channels calculation, resulting in an accurate
dete... | 1211.2139v2 |
2012-12-21 | Feshbach resonances in ultracold 85Rb | We present 17 experimentally confirmed Feshbach resonances in optically
trapped 85Rb. Seven of the resonances are in the ground-state channel (f,m_f) =
(2,+2)+(2,+2), and nine are in the excited-state channel (2,-2)+(2,-2). We find
a wide resonance at high field in each of the two channels, offering new
possibilities f... | 1212.5446v1 |
2014-11-25 | Optimization of Coplanar Waveguide Resonators for ESR Studies on Metals | We present simulations and analytic calculations of the electromagnetic
microwave fields of coplanar waveguide (CPW) resonators in the vicinity of
highly conducting metallic samples. The CPW structures are designed with the
aim of investigating electron spin resonance (ESR) in metallic heavy-fermion
systems, in particu... | 1411.6858v1 |
2014-12-15 | Attosecond time delay in the photoionization of Mn in the region of the $3p \rightarrow 3d$ giant resonance | The initial insight into time delay in Mn photoionization in the region of
the $3p \to 3d$ giant autoionization resonance is gained in the framework of
the "spin-polarized" random phase approximation with exchange. The dramatic
effect of the giant autoionization resonance on time delay of photoemission
from the $3d$ an... | 1412.4730v2 |
2015-01-19 | The twofold emergence of the $a_1$ axial vector meson in high energy hadronic production | The high statistics COMPASS results on diffractive dissociation $\pi N
\rightarrow \pi \pi \pi N$ suggest that the isospin $I=1$ spin-parity $J^{PC}=
1^{++}$ $a_1(1260)$ resonance could be split into two states: $a_1(1260)$
decaying into an S-wave $\rho\pi$ system, and $a_1^\prime(1420)$ decaying into
a P-wave $f_0(980... | 1501.04643v1 |
2016-04-19 | Resonance fluorescence and laser spectroscopy of three-dimensionally confined excitons in monolayer WSe$_2$ | Resonant optical excitation of few-level quantum systems enables coherent
quantum control, resonance fluorescence, and direct characterization of
dephasing mechanisms. Experimental demonstrations have been achieved in a
variety of atomic and solid-state systems. An alternative but intriguing
quantum photonic platform i... | 1604.05522v1 |
2016-05-01 | 750 GeV diphoton resonance and electric dipole moments | We examine the implication of the recently observed 750 GeV diphoton excess
for the electric dipole moments of the neutron and electron. If the excess is
due to a spin zero resonance which couples to photons and gluons through the
loops of massive vector-like fermions, the resulting neutron electric dipole
moment can b... | 1605.00206v1 |
2017-09-05 | Feshbach Loss Spectroscopy in an Ultracold $^{23}$Na and $^{40}$K Mixture | We perform Feshbach spectroscopy in an ultracold mixture of $^{23}$Na and
$^{40}$K with different spin-state combinations. We have observed 24 new
interspecies Feshbach resonances at magnetic field up to 350 G. A full
coupled-channel calculation is performed to assign these resonances. Among
them, 12 resonances are ide... | 1709.01260v1 |
2018-01-23 | Photo- and electroproduction of $K^{+}Λ$ with unitarity-restored isobar model | Exploiting the isobar model, kaon photo- and electroproduction on the proton
in the resonance region comes under scrutiny. An upgrade of our previous model,
comprising higher-spin nucleon and hyperon exchanges in the consistent
formalism, was accomplished by implementing energy-dependent widths of nucleon
resonances, w... | 1801.07466v2 |
2018-10-30 | Ultrasensitive Displacement Noise Measurement of Carbon Nanotube Mechanical Resonators | Mechanical resonators based on a single carbon nanotube are exceptional
sensors of mass and force. The force sensitivity in these ultra-light
resonators is often limited by the noise in the detection of the vibrations.
Here, we report on an ultra-sensitive scheme based on a RLC resonator and a
low-temperature amplifier... | 1810.12797v1 |
2016-03-12 | Evidence for Some New Hyperon Resonances -- to be Checked by $K_L$ Beam Experiments | Quenched and unquenched quark models predict very different patterns for the
spectrum of the low excited hyperon states. Evidence is accumulating for the
existence of some new hyperon resonances, such as a $\Sigma^*$ of spin-parity
$J^P=1/2^-$ around 1400 MeV instead of 1620 MeV as listed in PDG, a new
$\Sigma(1540)3/2... | 1603.03927v1 |
2019-05-28 | Magnetic Feshbach resonances in ultracold collisions between Cs and Yb atoms | We investigate magnetically tunable Feshbach resonances in ultracold
collisions between ground-state Yb and Cs atoms, using coupled-channel
calculations based on an interaction potential recently determined from
photoassociation spectroscopy. We predict resonance positions and widths for
all stable isotopes of Yb, toge... | 1905.11977v1 |
2021-10-13 | The $Ω_{cc}$ resonances with negative parity in the chiral constituent quark model | Spectrum of the low-lying $\Omega_{cc}$ resonances with negative parity,
which are assumed to be dominated by $sccq\bar{q}$ pentaquark components, is
investigated using the chiral constituent quark model. Energies of the
$\Omega_{cc}$ resonances are obtained by considering the hyperfine interaction
between quarks by ex... | 2110.06408v2 |
2022-01-25 | Strong decays of multi-strangeness baryon resonances in the quark model | Decay properties of multi-strangeness $\Xi$ and $\Omega$ baryon resonances
are investigated within the constituent quark model by including relativistic
corrections. The strong decay widths of various $\Xi$ and $\Omega$ resonances
are computed and tested for internal quark configurations to pin down their
spin-parity (... | 2201.10427v1 |
2022-02-09 | Weak pion-production and the second resonance region | In this work we report the calculation of the total cross section for
pion-production by the dispersion of neutrinos on nucleons. We use a consistent
formalism for the intermediate resonance states of spin $3/2$ , taking care on
the conditions imposed by the invariance on contact transformations and using
the Sachs par... | 2202.04760v1 |
2022-03-15 | On-chip ultra-compact hexagonal boron nitride topological ring-resonator in visible region | Ultra-compact topological ring-resonators with chirality are important
devices for quantum optics. However, there are limited demonstrations of chiral
resonators, especially in the visible region. We proposed a topological
photonic ring-resonator based on hexagonal boron nitride (hBN) valley photonic
crystal (VPC). The... | 2203.07602v1 |
2023-02-28 | Deeply-virtual Compton process $e^- N \to e^- γπN$ to study nucleon to resonance transitions | We study the deeply-virtual Compton scattering (DVCS) process $e^- N \to e^-
\gamma \pi N$ involving the transition between a nucleon and a nucleon
resonance in the $\pi N$ system, within the framework of generalized parton
distributions (GPDs). For the four lowest-lying nucleon resonances,
$\Delta(1232)$, $P_{11}(1440... | 2303.00119v1 |
2023-05-02 | Combined effect of mutually frequency-detuned strong and weak drives on a two-level system: Envelope of the Rabi oscillations | Near-resonant ac-drive acting on a two-level system induces the Rabi
oscillations of the level occupations. It is shown that additional weak drive
properly frequency-detuned from the primary drive causes a resonant response.
This response manifests itself in the emergence of the envelope of the
oscillations. At resonan... | 2305.01136v1 |
2001-10-15 | Persistent Currents in Charge-density Wave Systems | The inductive exchange of carriers between closed Fermi surface sections
subject to Landau quantization and open Fermi surface sections subject to
charge-density wave (or spin-density wave) formation is shown to give rise to
persistent currents. This mechanism may explain recent experimental data in
certain organic con... | 0110278v1 |
2003-02-16 | New Zero-Resistance States in Heterostructures: Anderson-Brinkman-Phillips Charge Density Waves and New States | Recently, observed zero-resistance states are interpreted by
Anderson-Brinkman and Phillips as charge density waves. We point out the
existence of charge-density waves, superconducting states and new states
including a state of zero charge and finite spin. | 0302320v1 |
2006-05-02 | Waves in the Griffiths-Podolsky Metric | Perturbations form an important section of black hole analyses. This paper
deals with the effect of perturbations as in the delineation of waves that
occur. It makes use of the spin coefficients from [3] to represent the general
equations of waves in an accelerating black hole proposed in [2]. | 0605020v2 |
2007-01-23 | Spin Angular Momentum Imparted by Gravitational Waves | Following the demonstration that gravitational waves impart linear momentum,
it is argued that if they are polarized they should impart angular momentum to
appropriately placed 'test rods' in their path. A general formula for this
angular momentum is obtained and used to provide expressions for the angular
momentum imp... | 0701126v1 |
2007-03-01 | Localized Asymmetric Atomic Matter Waves in Two-Component Bose-Einstein Condensates Coupled with Two Photon Microwave Field | We investigate localized atomic matter waves in two-component Bose-Einstein
condensates coupled by the two photon microwave field. Interestingly, the
oscillations of localized atomic matter waves will gradually decay and finally
become non-oscillating behavior even if existing coupling field. In particular,
atom number... | 0703001v1 |
2006-06-29 | Quantum wave equations and non-radiating electromagnetic sources | A connection between classical non-radiating sources and free-particle wave
equations in quantum mechanics is rigorously made. It is proven that
free-particle wave equations for all spins have currents which can be defined
which are non-radiating electromagnetic sources. It is also proven that the
advanced and retarded... | 0606245v2 |
2017-06-06 | Driven spin wave modes in XY ferromagnet: Nonequilibrium phase transition | The dynamical responses of XY ferromagnet driven by linearly polarised
propagating and standing magnetic field wave have been studied by Monte Carlo
simulation in three dimensions. In the case of propagating magnetic field wave
(with specified amplitude, frequency and the wavelength), the low temperature
dynamical mode... | 1706.01619v6 |
2021-01-30 | Pair density wave solution for self-consistent model | In the t-U-V Hubbard model on the square lattice we found self-consistent
analytic solution for the ground state with coexisting d-wave symmetric bond
ordered pair density wave (PDW) and spin (SDW) or charge (CDW) density waves,
as observed in some high-temperature superconductors. In particular, the
solution gives the... | 2102.00144v1 |
2019-09-08 | Holographic charge density wave from D2-D8 | We have considered D2-D8 model and obtain a numerical solution that exhibits
spatially modulated phases corresponding to a charge density wave and a spin
density wave. We have analysed behavior of the free energy density for
different values of the chemical potential and the magnetic field. | 1909.03458v2 |
2021-12-25 | Relativistic electron wave packets featuring persistent quantum backflow | Closed-form, normalizable solutions of Dirac's equation propagating within a
semi-infinite cylindrical waveguide are obtained in terms of ordinary and
modified Bessel functions. These relativistic wave packets induce quantum
backflow on a cross-section of the cylinder at practically any distance along
the waveguide, be... | 2112.13180v1 |
2022-12-09 | Measurement-Induced State Transitions in a Superconducting Qubit: Within the Rotating Wave Approximation | Superconducting qubits typically use a dispersive readout scheme, where a
resonator is coupled to a qubit such that its frequency is qubit-state
dependent. Measurement is performed by driving the resonator, where the
transmitted resonator field yields information about the resonator frequency
and thus the qubit state. ... | 2212.05097v2 |
2023-03-20 | Enhanced Blackhole mergers in AGN discs due to Precession induced resonances | Recent studies have shown that AGN discs can host sources of gravitational
waves. Compact binaries can form and merge in AGN discs through their
interactions with the gas and other compact objects in the disc. It is also
possible for the binaries to shorten the merging timescale due to eccentricity
excitation caused by... | 2303.12539v2 |
2010-04-28 | Bar-mode instability of rapidly spinning black hole in higher dimensions: Numerical simulation in general relativity | Numerical-relativity simulation is performed for rapidly spinning black holes
(BHs) in a higher-dimensional spacetime of special symmetries for the
dimensionality $6 \leq d \leq 8$. We find that higher-dimensional BHs, spinning
rapidly enough, are dynamically unstable against nonaxisymmetric bar-mode
deformation and sp... | 1004.4970v1 |
2013-06-20 | Magnetic orders, excitations, and phase transitions in Fe_1+yTe | We study the magnetic properties of Fe_1+y Te, a parent compound of the
iron-based high-temperature superconductors. Motivated by recent neutron
scattering experiments, we show that a spin-1 exchange model, supplemented by a
single-ion spin anisotropy, accounts well for the experimentally observed low
temperature magne... | 1306.4730v2 |
2016-09-22 | Magnetization oscillations and waves driven by pure spin currents | Recent advances in the studies of pure spin currents - flows of angular
momentum (spin) not accompanied by the electric currents - have opened new
horizons for the emerging technologies based on the electron's spin degree of
freedom, such as spintronics and magnonics. The main advantage of pure spin
current, as compare... | 1609.06899v1 |
2018-06-19 | Spin-Precessing Black Hole Binaries in Dynamical Chern-Simons Gravity | Gravitational waves from spin-precessing binaries exhibit amplitude
oscillations that provide an invaluable method to extract the spins of the
inspiraling compact objects. The spin-spin and spin-orbit interactions that
cause this effect are sensitive to the fundamental nature of gravity, which
will allow us to constrai... | 1806.07431v2 |
2021-03-23 | Spin excitations in metallic kagome lattice FeSn and CoSn | In two-dimensional (2D) metallic kagome lattice materials, destructive
interference of electronic hopping pathways around the kagome bracket can
produce nearly localized electrons, and thus electronic bands that are flat in
momentum space. When ferromagnetic order breaks the degeneracy of the
electronic bands and split... | 2103.12873v3 |
2021-11-04 | Apples and Oranges: Comparing black holes in X-ray binaries and gravitational-wave sources | The component black holes (BHs) observed in gravitational-wave (GW) binary
black hole (BBH) events tend to be more massive and slower spinning than those
observed in black hole X-ray binaries (BH-XRBs). Without modeling their
evolutionary histories, we investigate whether these apparent tensions in the
BH populations c... | 2111.02935v2 |
2024-02-23 | Spin Doctors: How to diagnose a hierarchical merger origin | Gravitational-wave observations provide the unique opportunity of studying
black hole formation channels and histories -- but only if we can identify
their origin. One such formation mechanism is the dynamical synthesis of black
hole binaries in dense stellar systems. Given the expected isotropic
distribution of compon... | 2402.15066v1 |
2018-11-23 | Weakly non-linear transient waves on a shear current: Ring waves and skewed Langmuir rolls | We investigate the weakly nonlinear dynamics of transient gravity waves at
infinite depth under the influence of a shear current varying linearly with
depth. An analytical solution is permitted via integration of the Euler
equations. Although similar problems were investigated in the 1960's and 70's
for special cases o... | 1811.09396v1 |
2020-03-21 | Narrowband large amplitude whistler-mode waves in the solar wind and their association with electrons: STEREO waveform capture observations | Large amplitude whistler waves at frequencies of 0.2 to 0.4 times electron
cyclotron frequency are frequently observed in the solar wind. The waves are
obliquely propagating close to the resonance cone, with significant electric
fields parallel to the background magnetic field, enabling strong interactions
with electro... | 2003.09659v2 |
2021-02-26 | Microscopic analysis of low-energy spin and orbital magnetic dipole excitations in deformed nuclei | A low-energy magnetic dipole $(M1)$ spin-scissors resonance (SSR) located
just below the ordinary orbital scissors resonance (OSR) was recently predicted
in deformed nuclei within the Wigner Function Moments (WFM) approach. We
analyze this prediction using fully self-consistent Skyrme Quasiparticle Random
Phase Approxi... | 2102.13580v2 |
2010-03-25 | Spin superfluidity and magnon BEC | The spin superfluidity -- superfluidity in the magnetic subsystem of a
condensed matter - is manifested as the spontaneous phase-coherent precession
of spins first discovered in 1984 in 3He-B. This superfluid current of spins -
spin supercurrent - is one more representative of superfluid currents known or
discussed in ... | 1003.4889v3 |
2018-09-24 | Quantum spin-transfer torque induced nonclassical magnetization dynamics and electron-magnetization entanglement | The standard spin-transfer torque (STT)---where spin-polarized current drives
dynamics of magnetization viewed as a classical vector---requires
noncollinearity between electron spins carried by the current and magnetization
of a ferromagnetic layer. However, recent experiments [A. Zholud et al., Phys.
Rev. Lett. 119, 2... | 1809.09090v1 |
2019-05-27 | Spin-Cooling of the Motion of a Trapped Diamond | Observing and controlling macroscopic quantum systems has long been a driving
force in research on quantum physics. In this endeavor, strong coupling between
individual quantum systems and mechanical oscillators is being actively
pursued. While both read-out of mechanical motion using coherent control of
spin systems a... | 1905.11509v2 |
2019-10-16 | Thermal Hall effect, spin Nernst effect, and spin density induced by thermal gradient in collinear ferrimagnets from magnon-phonon interaction | We theoretically study the intrinsic thermal Hall and spin Nernst effect in
collinear ferrimagnets on a honeycomb lattice with broken inversion symmetry.
The broken inversion symmetry allows in-plane Dzyaloshinskii-Moriya interaction
between the nearest neighbors, which does not affect the magnon spectrum in the
linear... | 1910.07206v2 |
2021-11-07 | A correctly scaling rigorously spin-adapted and spin-complete open-shell CCSD implementation for arbitrary high-spin states | In this paper, we report on a correctly scaling novel coupled cluster singles
and doubles (CCSD) implementation for arbitrary high-spin open-shell states.
The chosen cluster operator is completely spin-free, i.e. employs spatial
substitutions only. It is composed of our recently developed L\"owdin-type
operators (doi: ... | 2111.04186v1 |
2023-10-23 | Microscopic theory of spin Seebeck effect in antiferromagnets | We develop a microscopic theory for the spin Seebeck effect (SSE) in N\'eel
and canted phases of antiferromagnetic insulators. We calculate the DC spin
current tunneling from the antiferromagnet to an attached metal, incorporating
the spin-wave theory and the non-equilibrium Green's function approach. Our
result shows ... | 2310.15292v2 |
2005-09-06 | Rigorous analysis of extremely asymmetrical scattering of electromagnetic waves in slanted periodic gratings | Extremely asymmetrical scattering (EAS) is a new type of Bragg scattering in
thick, slanted, periodic gratings. It is realised when the scattered wave
propagates parallel to the front boundary of the grating. Its most important
feature is the strong resonant increase in the scattered wave amplitude
compared to the ampl... | 0509042v2 |
2007-06-06 | Coronal ion-cyclotron beam instabilities within the multi-fluid description | Spectroscopic observations and theoretical models suggest resonant
wave-particle interactions, involving high-frequency ion-cyclotron waves, as
the principal mechanism for heating and accelerating ions in the open coronal
holes. However, the mechanism responsible for the generation of the
ion-cyclotron waves remains un... | 0706.0752v2 |
2014-09-25 | Ultraslow Wave Nuclear Burning of Uranium-Plutonium Fissile Medium on Epithermal Neutrons | For a fissile medium, originally consisting of uranium-238, the investigation
of fulfillment of the wave burning criterion in a wide range of neutron
energies is conducted for the first time, and a possibility of wave nuclear
burning not only in the region of fast neutrons, but also for cold, epithermal
and resonance o... | 1409.7343v2 |
2016-04-22 | Oscillating line source in a shear flow with a free surface: critical layer-like contributions | The linearized water-wave radiation problem for an oscillating submerged line
source in an inviscid shear flow with a free surface is investigated
analytically at finite, constant depth in the presence of a shear flow varying
linearly with depth. The surface velocity is taken to be zero relative to the
oscillating sour... | 1604.06672v1 |
2018-04-20 | A Weakly Nonlinear Model for the Damping of Resonantly Forced Density Waves in Dense Planetary Rings | In this paper we address the stability of resonantly forced density waves in
dense planetary rings.
Already by Goldreich & Tremaine (1978) it has been argued that density waves
might be unstable, depending on the relationship between the ring's viscosity
and the surface mass density.
In the recent paper Schmidt et ... | 1804.07674v1 |
2023-05-08 | Uncovering and experimental realization of multimodal 3D topological metamaterials for low-frequency and multiband elastic wave control | Topological metamaterials unlock confined and robust elastic wave control in
mechanical structures. Recent breakthroughs have precipitated the development
of 3D topological mechanical metamaterials, which extend beyond the
conventional 1D and 2D metamaterials to facilitate extraordinary wave
manipulation along 2D plana... | 2305.04649v1 |
2006-09-08 | Studies on Entanglement in Nuclear and Electron Spin Systems for Quantum Computing | In this work, we have been working on the concept of quantum entanglement. At
first, we studied the theory of entanglement in its characterization and
measurement, introducing a new scheme for detection of entanglement. The new
approach links molecular-spin entities involving nuclear spins to quantum
computing as more ... | 0609063v3 |
2007-11-09 | Semiconductor Spintronics | Spintronics refers commonly to phenomena in which the spin of electrons in a
solid state environment plays the determining role. In a more narrow sense
spintronics is an emerging research field of electronics: spintronics devices
are based on a spin control of electronics, or on an electrical and optical
control of spi... | 0711.1461v1 |
2009-09-10 | Dynamic spin-Hall effect and driven spin helix for linear spin-orbit interactions | We derive boundary conditions for the electrically induced spin accumulation
in a finite, disordered 2D semiconductor channel. While for DC electric fields
these boundary conditions select spatially constant spin profiles equivalent to
a vanishing spin-Hall effect, we show that an in-plane ac electric field
results in ... | 0909.1892v2 |
2012-02-17 | Electrical injection and detection of spin accumulation in Ge at room temperature | We inject spin-polarized electrons from an Fe/MgO tunnel barrier contact into
n-type Ge(001) substrates with electron densities 2e16 < n < 8e17 cm-3, and
electrically detect the resulting spin accumulation using three-terminal Hanle
measurements. We observe significant spin accumulation in the Ge up to room
temperature... | 1202.3994v1 |
2013-11-18 | Manipulation of the nuclear spin ensemble in a quantum dot with chirped magnetic resonance pulses | The nuclear spins in nanostructured semiconductors play a central role in
quantum applications. The nuclear spins represent a useful resource for
generating local magnetic fields but nuclear spin noise represents a major
source of dephasing for spin qubits. Controlling the nuclear spins enhances the
resource while supp... | 1311.4295v2 |
2015-04-29 | Role of transparency of platinum-ferromagnet interface in determining intrinsic magnitude of spin Hall effect | The spin Hall effect (SHE) converts charge current to pure spin currents in
orthogonal directions in materials that have significant spin-orbit
coupling.The efficiency of the conversion is described by the spin Hall Angle
(SHA). The SHA can most readily be inferred by using the generated spin
currents to excite or rota... | 1504.07929v1 |
2016-02-01 | Facet-dependent giant spin orbit torque in single crystalline antiferromagnetic Ir-Mn / ferromagnetic permalloy bilayers | There has been considerable interest in spin-orbit torques for the purpose of
manipulating the magnetization of ferromagnetic (FM) films or nano-elements for
spintronic technologies. Spin-orbit torques are derived from spin currents
created from charge currents in materials with significant spin-orbit coupling
that dif... | 1602.00670v1 |
2017-11-20 | Multi-spin-assisted optical pumping of bulk 13C nuclear spin polarization in diamond | One of the most remarkable properties of the nitrogen-vacancy (NV) center in
diamond is that optical illumination initializes its electronic spin almost
completely, a feature that can be exploited to polarize other spin species in
their proximity. Here we use field-cycled nuclear magnetic resonance (NMR) to
investigate... | 1711.07576v1 |
2018-06-08 | Transverse spin and transverse momentum in structured optical fields | It has been recently recognized that in addition to the conventional
longitudinal angular momentum, structured (inhomogeneous) optical fields
exhibit helicity-independent transverse spin angular momentum (SAM) and an
unusual spin (circular polarization)- dependent transverse momentum, the
so-called Belinfante's spin mo... | 1806.03334v2 |
2018-02-09 | Electron Spin Coherences in Rare-Earth Optically Excited States for Microwave to Optical Quantum Transducers | Efficient and reversible optical to microwave coherent transducers are
required to enable entanglement transfer between superconducting qubits and
light for quantum networks. Rare-earth-doped crystals that possess narrow
optical and spin transitions are a promising way to implement these devices.
Current approaches use... | 1802.03354v2 |
2020-08-11 | Impact of $\mathcal{T}$-symmetry on spin decoherence and control in a synthetic spin-orbit field | The electrical control of a spin qubit in a quantum dot relies on spin-orbit
coupling (SOC), which could be either intrinsic to the underlying crystal
lattice or heterostructure, or extrinsic via, for example, a micro-magnet. Here
we show that a key difference between the intrinsic SOC and the synthetic SOC
introduced ... | 2008.04671v2 |
2017-06-22 | Observation of anomalous spin-torque generated by a ferromagnet | In this work we report observation of in-plane current induced out-of-plane
magnetic field driven torque in spin valve structure. Since ferromagnet has
high spin orbit coupling it is expected to be the source of spin-orbit-torque
as it possesses anomalous-Hall-effect (AHE: equivalent to spin Hall effect in
heavy metal)... | 1706.07245v1 |
2022-07-06 | Robust millisecond coherence times of erbium electron spins | Erbium-doped solids are prime candidates for optical quantum communication
networks due to erbium's telecom C-band emission. A long-lived electron spin of
erbium with millisecond coherence time is highly desirable for establishing
entanglement between adjacent quantum repeater nodes while long-term storage of
the entan... | 2207.02708v1 |
2022-09-01 | Spin-dependent metastable He ($2^3S$) atom scattering from ferromagnetic surfaces: Potential application to polarized-gas production | A spin-polarized triplet metastable helium (He*) beam has been used as a
probe for surface magnetism, but changes in the spin state during scattering
from a surface remain unclear. In the present study, we explored this issue by
constructing an apparatus that allows us to direct a spin-polarized He* beam to
a surface a... | 2209.00254v2 |
2023-09-07 | Coherent spin dynamics between electron and nucleus within a single atom | The nuclear spin, being much more isolated from the environment than its
electronic counterpart, enables quantum experiments with prolonged coherence
times and presents a gateway towards uncovering the intricate dynamics within
an atom. These qualities have been demonstrated in a variety of nuclear spin
qubit architect... | 2309.03749v1 |
2024-02-06 | Magnon mediated spin pumping by coupled ferrimagnetic garnets heterostructure | Spin pumping has significant implications for spintronics, providing a
mechanism to manipulate and transport spins for information processing.
Understanding and harnessing spin currents through spin pumping is critical for
the development of efficient spintronic devices. The use of a magnetic
insulator with low damping... | 2402.03734v1 |
2024-02-22 | Spin-dependent edge states in two-dimensional Dirac materials with a flat band | The phenomenon of spin-dependent quantum scattering in two-dimensional (2D)
pseudospin-1/2 Dirac materials leading to a relativistic quantum chimera was
recently uncovered. We investigate spin-dependent Dirac electron optics in 2D
pseudospin-1 Dirac materials, where the energy-band structure consists of a
pair of Dirac... | 2402.14248v1 |
2020-11-03 | Controlling directed atomic motion and second-order tunneling of a spin-orbit-coupled atom in optical lattices | We theoretically explore the tunneling dynamics for the tight-binding (TB)
model of a single spin-orbit-coupled atom trapped in an optical lattice
subjected to lattice shaking and to time-periodic Zeeman field. By means of
analytical and numerical methods, we demonstrate that the spin-orbit (SO)
coupling adds some new ... | 2011.01399v2 |
2001-01-26 | Approach to the metal-insulator transition in La(1-x)CaxMnO3 (0<x<.2): magnetic inhomogeneity and spin wave anomaly | We describe the evolution of the static and dynamic spin correlations of
La$_{1-x}$Ca$_x$MnO$_3$, for x=0.1, 0.125 and 0.2, where the system evolves
from the canted magnetic state towards the insulating ferromagnetic state,
approaching the metallic transition (x=0.22).
In the x=0.1 sample, the observation of two spin... | 0101414v1 |
2017-08-29 | Spin wave damping arising from phase coexistence below $T_c$ in colossal magnetoresistive La$_{0.7}$Ca$_{0.3}$MnO$_3$ | While the spin dynamics of La$_{0.7}$Ca$_{0.3}$MnO$_3$ in the ferromagnetic
phase are known to be unconventional, previous measurements have yielded
contradictory results regarding the damping of spin wave excitations. Neutron
spectroscopy measurements on a sample with a transition temperature of
$T_c$=257 K, higher th... | 1708.08960v2 |
2018-08-01 | Raman fingerprint of two terahertz spin wave branches in a two-dimensional honeycomb Ising ferromagnet | Two-dimensional (2D) magnetism has been long sought-after and only very
recently realized in atomic crystals of magnetic van der Waals materials. So
far, a comprehensive understanding of the magnetic excitations in such 2D
magnets remains missing. Here we report polarized micro-Raman spectroscopy
studies on a 2D honeyc... | 1808.00168v3 |
2019-02-27 | Anomalous phase ordering of a quenched ferromagnetic superfluid | Coarsening dynamics, the canonical theory of phase ordering following a
quench across a symmetry breaking phase transition, is thought to be driven by
the annihilation of topological defects. Here we show that this understanding
is incomplete. We simulate the dynamics of an isolated spin-1 condensate
quenched into the ... | 1902.10792v4 |
2021-08-23 | High-accuracy simulations of highly spinning binary neutron star systems | With an increasing number of expected gravitational-wave detections of binary
neutron star mergers, it is essential that gravitational-wave models employed
for the analysis of observational data are able to describe generic compact
binary systems. This includes systems in which the individual neutron stars are
millisec... | 2108.10429v1 |
2019-10-04 | Spin-wave directional anisotropies in antiferromagnetic Ba$_{3}$NbFe$_{3}$Si$_{2}$O$_{14}$ | Ba$_{3}$NbFe$_{3}$Si$_{2}$O$_{14}$ (langasite) is structurally and
magnetically single domain chiral with the magnetic helicity induced through
competing symmetric exchange interactions. Using neutron scattering, we show
that the spin-waves in antiferromagnetic langasite display directional
anisotropy. On applying a ti... | 1910.01977v2 |
2020-01-31 | Temperature dependence of spin pinning and spin-wave dispersion in nanoscopic ferromagnetic waveguides | The field of magnonics attracts significant attention due to the possibility
of utilizing information coded into the spin-wave phase or amplitude to perform
computation operations on the nanoscale. Recently, spin waves were investigated
in Yttrium Iron Garnet (YIG) waveguides with widths ranging down to 50 nm and
aspec... | 2002.00003v1 |
2021-09-30 | Selection rules and dynamic magnetoelectric effect of the spin waves in multiferroic BiFeO$_3$ | We report the magnetic field dependence of the THz absorption and
non-reciprocal directional dichroism spectra of BiFeO$_3$ measured on the three
principal crystal cuts for fields applied along the three principal directions
of each cut. From the systematic study of the light polarization dependence we
deduced the opti... | 2109.14990v1 |
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