publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
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2007-01-08 | Effect of spatial confinement on spin-wave spectrum: Low temperature deviation from Bloch T3/2 law in Co nanoparticles | We present the study on Bloch T3/2 law and its applicability in ferromagnetic
cobalt nanoparticles with sizes 25 and 38 nm. Bloch has derived the T3/2 law by
assuming long wave-length spin-waves to be excited at low temperatures. But, in
nanoparticles the wavelength of the spin wave is confined by the size of the
magne... | 0701152v1 |
2008-08-10 | Formation of guided spin-wave bullets in ferrimagnetic film stripes | The formation of quasi-2D nonlinear spin-wave eigenmodes in longitudinally
magnetized stripes of a ferrimagnetic film, so-called guided spin-wave bullets,
was experimentally observed by using time- and space-resolved Brillouin light
scattering spectroscopy and confirmed by numerical simulation. They represent
stable sp... | 0808.1399v1 |
2009-03-21 | Scattering of surface and volume spin waves in a magnonic crystal | The operational characteristics of a magnonic crystal, which was fabricated
as an array of shallow grooves etched on a surface of a magnetic film, were
compared for magnetostatic surface spin waves and backward volume magnetostatic
spin waves. In both cases the formation of rejection frequency bands was
studied as a fu... | 0903.3686v1 |
2014-07-25 | Transverse spin and momentum in two-wave interference | We analyze the interference field formed by two electromagnetic plane waves
(with the same frequency but different wave vectors), and find that such field
reveals a rich and highly non-trivial structure of the local momentum and spin
densities. Despite the seemingly-planar and extensively-studied character of
the two-w... | 1407.6786v2 |
2015-03-06 | Standing spin wave mode in RFIM at T=0: Patterns and nonequilibrium phases | The dynamical responses of random field Ising model at zero temperature,
driven by standing magnetic field wave, is studied by Monte Carlo simulation in
two dimensions. The three different kinds of distribution of quenched random
field are used here, uniform, bimodal and Gaussian. In all cases, three
distinct dynamical... | 1503.01861v2 |
2019-11-12 | Parametric generation of propagating spin-waves in ultra thin yttrium iron garnet waveguides | We present the experimental demonstration of the parallel parametric
generation of spin-waves in a microscaled yttrium iron garnet waveguide with
nanoscale thickness. Using Brillouin light scattering microscopy, we observe
the excitation of the first and second waveguide modes generated by a stripline
microwave pumping... | 1911.04926v2 |
2021-11-03 | Efficient geometrical control of spin waves in microscopic YIG waveguides | We study experimentally and by micromagnetic simulations the propagation of
spin waves in 100-nm thick YIG waveguides, where the width linearly decreases
from 2 to 0.5 micrometers over a transition region with varying length between
2.5 and 10 micrometers. We show that this geometry results in a down-conversion
of the ... | 2111.02236v1 |
2022-08-23 | Reversal of nanomagnets by propagating magnons in ferrimagnetic yttrium iron garnet enabling nonvolatile magnon memory | Despite the unprecedented downscaling of CMOS integrated circuits,
memory-intensive machine learning and artificial intelligence applications are
limited by data conversion between memory and processor. There is a challenging
quest for novel approaches to overcome this so-called von Neumann bottleneck.
Magnons are the ... | 2208.10923v1 |
2022-09-14 | Generation of Spin-Wave Pulses by Inverse Design | The development of fast magnonic information processing nanodevices requires
operating with short spin-wave pulses, but, the shorter the pulses, the more
affected they are by information loss due to broadening and dispersion. The
capability of engineering spin-wave pulses and controlling their propagation
could solve t... | 2209.06608v1 |
2022-10-26 | Nonreciprocal collective magnetostatic wave modes in geometrically asymmetric bilayer structure with nonmagnetic spacer | Nonreciprocity, i.e. inequivalence in amplitudes and frequencies of spin
waves propagating in opposite directions, is a key property underlying
functionality in prospective magnonic devices. Here we demonstrate
experimentally and theoretically a simple approach to induce frequency
nonreciprocity in a magnetostatically ... | 2210.14882v2 |
2023-06-28 | Dissipative Spin-wave Diode and Nonreciprocal Magnonic Amplifier | We propose an experimentally feasible dissipative spin-wave diode comprising
two magnetic layers coupled via a non-magnetic spacer. We theoretically
demonstrate that the spacer mediates not only coherent interactions but also
dissipative coupling. Interestingly, an appropriately engineered dissipation
engenders a nonre... | 2306.15916v1 |
2020-03-02 | Shortcut to geostrophy in wave-driven rotating turbulence: the quartetic instability | We report on laboratory experiments of wave-driven rotating turbulence. A set
of wavemakers produces inertial-wave beams that interact nonlinearly in the
central region of a water tank mounted on a rotating platform. The forcing thus
injects energy into inertial waves only. For moderate forcing amplitude, part
of the e... | 2003.01177v1 |
2021-04-29 | Selective mode conversion and rainbow trapping via graded elastic waveguides | We experimentally achieve wave mode conversion and rainbow trapping in an
elastic waveguide loaded with an array of resonators. Rainbow trapping is a
phenomenon that induces wave confinement as a result of a spatial variation of
the wave velocity, here promoted by gently varying the length of consecutive
resonators. By... | 2104.14394v2 |
2019-07-09 | Forced three-wave interactions of capillary-gravity surface waves | {Three-wave resonant interactions constitute an essential nonlinear mechanism
coupling capillary surface waves. In a previous work, Haudin et al. [Phys. Rev
E 93, 043110 (2016)], we have characterized experimentally the generation by
this mechanism of a daughter wave, whose amplitude saturates due to the viscous
dissip... | 1907.04365v1 |
2024-01-08 | Generation of interfacial waves by rotating magnetic fields | Interfacial waves arising in a two-phase swirling flow driven by a
low-frequency rotating magnetic field (RMF) are studied. At low RMF
frequencies, of the order of 1-10 Hz, the oscillatory part of the induced
Lorenz force becomes comparable to the time-averaged one, and cannot be
neglected. In particular, when free sur... | 2401.04045v1 |
2016-02-28 | Scattering of Waves by Impurities in Precompressed Granular Chains | We study scattering of waves by impurities in strongly precompressed granular
chains. We explore the linear scattering of plane waves and identify a
closed-form expression for the reflection and transmission coefficients for the
scattering of the waves from both a single impurity and a double impurity. For
single-impur... | 1602.08651v2 |
2020-12-23 | Theoretical description of chirping waves using phase-space waterbags | The guiding centre dynamics of fast particles can alter the behaviour of
energetic particle driven modes with chirping frequencies. In this paper, the
applicability of an earlier trapped/passing locus model [H. Hezaveh et al 2017
Nucl. Fusion 57 126010] has been extended to regimes where the wave trapping
region can ex... | 2012.12504v1 |
2022-06-16 | Electron spin resonance and collective excitations in magic-angle twisted bilayer graphene | In a strongly correlated system, collective excitations contain key
information regarding the electronic order of the underlying ground state. An
abundance of collective modes in the spin and valley isospin channels of
magic-angle graphene moir\'e bands has been alluded to by a series of recent
experiments. However, di... | 2206.08354v2 |
2004-11-09 | Single-shot read-out of an individual electron spin in a quantum dot | Spin is a fundamental property of all elementary particles. Classically it
can be viewed as a tiny magnetic moment, but a measurement of an electron spin
along the direction of an external magnetic field can have only two outcomes:
parallel or anti-parallel to the field. This discreteness reflects the quantum
mechanica... | 0411232v2 |
2011-03-02 | Quantum control of proximal spins using nanoscale magnetic resonance imaging | Quantum control of individual spins in condensed matter systems is an
emerging field with wide-ranging applications in spintronics, quantum
computation, and sensitive magnetometry. Recent experiments have demonstrated
the ability to address and manipulate single electron spins through either
optical or electrical techn... | 1103.0546v1 |
2015-05-26 | Vector magnetometry based on S=3/2 electronic spins | Electronic spin systems with S>1/2 provide an efficient method for DC vector
magnetometry, since the conventional electron spin resonance spectra at a given
magnetic field reflect not only the field strength but also orientation in the
presence of strong spin-spin interactions. S=1 spins, e.g. the nitrogen-vacancy
cent... | 1505.06914v2 |
2016-03-03 | Non-equilibrium charge and spin transport in SFS point contacts | The conventional Josephson effect may be modified by introducing spin-active
scattering in the interface-layer of the junction. Here, we discuss a Josephson
junction consisting of two s-wave superconducting leads coupled over a
classical spin that precesses with the Larmor frequency due to an external
magnetic field. T... | 1603.01299v1 |
2004-06-22 | Spin susceptibilities, spin densities and their connection to spin-currents | We calculate the frequency dependent spin susceptibilities for a
two-dimensional electron gas with both Rashba and Dresselhaus spin-orbit
interaction. The resonances of the susceptibilities depends on the relative
values of the Rashba and Dresselhaus spin-orbit constants, which could be
manipulated by gate voltages. We... | 0406531v2 |
2005-01-06 | Electron Spin Dynamics and Hyperfine Interactions in Fe/Al_0.1Ga_0.9As/GaAs Spin Injection Heterostructures | We have studied hyperfine interactions between spin-polarized electrons and
lattice nuclei in Al_0.1Ga_0.9As/GaAs quantum well (QW) heterostructures. The
spin-polarized electrons are electrically injected into the semiconductor
heterostructure from a metallic ferromagnet across a Schottky tunnel barrier.
The spin-polar... | 0501096v1 |
2014-02-11 | Dynamical decoupling design for identifying weakly coupled nuclear spins in a bath | Identifying weakly coupled nuclear spins around single electron spins is a
key step of implementing quantum information processing using coupled
electron-nuclei spin systems or sensing like single spin nuclear magnetic
resonance detection using diamond defect spins. Dynamical decoupling control of
the center electron s... | 1402.2345v1 |
2014-11-11 | Spin Relaxation Mechanism in a Highly Doped Organic Polymer Film | We report the systematic studies of spin current transport and relaxation
mechanism in highly doped organic polymer film. In this study, we have
determined spin diffusion length (SDL), spin lifetime, and spin diffusion
constant by using different experimental techniques. The spin lifetime
estimated from the electron pa... | 1411.2740v1 |
2020-11-19 | Determining complex spin mixing conductance and spin diffusion length from spin pumping experiments in magnetic insulator/heavy metal bilayers | Magnetic insulators are promising materials for the development of
energy-efficient spintronics. Unlike metallic counterparts, the magnetic
insulators are characterized by imaginary part of the interfacial spin mixing
conductance as well in a bilayer with heavy metals and it is responsible for
the field-like toque in s... | 2011.11055v1 |
2023-01-06 | Interfacial magnetic anisotropy controlled spin pumping in Co60Fe20B20/Pt stack | Controlled spin transport in magnetic stacks is required to realize pure spin
current-driven logic and memory devices. The control over the generation and
detection of the pure spin current is achieved by tuning the spin to charge
conversion efficiency of the heavy metal interfacing with ferromagnets. Here,
we demonstr... | 2301.02370v1 |
2023-07-22 | Dense plasma irradiated platinum with improved spin Hall effect | The impurity incorporation in host high-spin orbit coupling materials like
platinum has shown improved charge-to-spin conversion by modifying the up-spin
and down-spin electron trajectories by bending or skewing them in opposite
directions. This enables efficient generation, manipulation, and transport of
spin currents... | 2307.12139v1 |
2016-08-09 | Polarons and Molecules in a Fermi Gas with Orbital Feshbach Resonance | We study the impurity problem in a gas of $^{173}$Yb atoms near the recently
discovered orbital Feshbach resonance. In an orbital Feshbach resonance, atoms
in the electronic ground state $^1S_0$ interact with those in the long-lived
excited $^3P_0$ state with magnetically tunable interactions. We consider an
impurity a... | 1608.02744v2 |
2023-02-10 | Booster Free From Spin Resonance For Future 100~km-scale Circular e$^{+}$e$^{-}$ Colliders | Acceleration of polarized electron~(positron) beams in a booster synchrotron
may suffer from depolarization due to crossings of many spin depolarization
resonances, which could limit its applications. We have studied the spin
depolarization resonance structure of a 100~km scale booster lattice of the
Circular Electron ... | 2302.05321v2 |
2013-05-13 | New features of ion acoustic waves in inhomogeneous and permeating plasmas | It is generally accepted that the ion acoustic (IA) wave in plasmas
containing ions and electrons with the same temperature is of minor importance
due to strong damping of the wave by hot resonant ions. In this work it will be
shown that the IA wave is susceptible to excitation even in plasmas with hot
ions when both a... | 1305.2739v1 |
2022-11-26 | Triggered Ion-acoustic Waves | The Parker Solar Probe is in a solar orbit with a perihelion for orbit 12 at
13.3 solar radii. The electric field experiment on this satellite observes what
we call triggered ion-acoustic waves as the most dominant wave mode above a few
Hz within the solar radial distance of 15-25 solar radii. In this mode, a few
Hz el... | 2211.14415v2 |
1999-11-29 | Spin Waves in Canted Phases: An Application to Doped Manganites | We present the effective lagrangian for low energy and momentum spin waves in
canted phases at next to leading order in the derivative expansion. The
symmetry breaking pattern SU(2) --> 1 of the internal spin group and that of
the crystallographic space group imply that there is one ferromagnetic and one
antiferromagne... | 9911471v2 |
2007-05-25 | Excitation of self-localized spin-wave "bullets" by spin-polarized current in in-plane magnetized magnetic nano-contacts: a micromagnetic study | It was shown by micromagnetic simulation that a current-driven in-plane
magnetized magnetic nano-contact, besides a quasi-linear propagating
("Slonczewski") spin wave mode, can also support a nonlinear self-localized
spin wave "bullet" mode that exists in a much wider range of bias currents. The
frequency of the "bulle... | 0705.3750v1 |
2008-05-29 | Wave packet dynamics in 2DEG with spin orbit coupling: splitting and zitterbewegung | We study the effect of splitting and zitterbewegung of 1D and 2D electron
wave packets in the semiconductor quantum well under the influence of the
Rashba spin orbit coupling. Results of our investigations show that the spin
orbit interaction induces dramatic qualitative changes in the evolution of spin
polarized wave ... | 0805.4489v2 |
2008-11-03 | Dispersion and spin wave "tunneling" in nano-structured magnetostatic spin waveguides | Magnetostatic spin wave dispersion and loss are measured in micron scale spin
wave-guides in ferromagnetic, metallic CoTaZr. Results are in good agreement
with model calculations of spin wave dispersion. The measured attenuation
lengths, of the order of 3um, are several of orders of magnitude shorter than
that predicte... | 0811.0353v1 |
2009-07-13 | A topological gauge field in nanomagnets: spin wave excitations over a slowly moving magnetization background | We introduce a topological gauge vector potential which influences spin wave
excitations over arbitrary non-uniform, slowly moving magnetization
distribution. The time-component of the gauge potential plays a principal role
in magnetization dynamics, whereas its spatial components can be often
neglected for typical mag... | 0907.2226v1 |
2009-09-17 | Experimental evidence of self-localized and propagating spin wave modes in obliquely magnetized current-driven nanocontacts | Through detailed experimental studies of the angular dependence of spin wave
excitations in nanocontact-based spin-torque oscillators, we demonstrate that
two distinct spin wave modes can be excited, with different frequency,
threshold currents and frequency tuneability. Using analytical theory and
micromagnetic simula... | 0909.3331v2 |
2010-07-06 | Spin waves in the (0,pi) and (0,pi,pi) ordered SDW states of the t-t' Hubbard model: Application to doped iron pnictides | Spin waves in (0,pi) and (0,pi,pi) ordered spin-density-wave (SDW) states of
the t-t' Hubbard model are investigated at finite doping. In the presence of
small t', these composite ferro-antiferromagnetic (F-AF) states are found to be
strongly stabilized at finite hole doping due to enhanced carrier-induced
ferromagneti... | 1007.0812v1 |
2011-04-27 | Spin Density Waves and Domain Wall Interactions in Nanowires | We investigated how the dynamics of a domain wall are affected by the
presence of spin density waves in a ferromagnetic wire. Domain walls and other
scattering centres can cause coherent spin density waves to propagate through a
wire when a current is applied. In some cases the spin torque due to these
scattered electr... | 1104.5175v1 |
2016-08-17 | Current-induced instability of domain walls in cylindrical nanowires | We study the current-driven domain wall (DW) motion in cylindrical nanowires
using micromagnetic simulations by implementing the Landau-Lifshitz-Gilbert
equation with nonlocal spin-transfer torque in a finite difference
micromagnetic package. We find that in the presence of DW Gaussian wave packets
(spin waves) will be... | 1608.04876v2 |
2018-09-27 | Spin wave radiation from vortices in $^3$He-B | We consider a vortex line in the B phase of superfluid $^3$He under uniformly
precessing magnetization. The magnetization exerts torque on the vortex,
causing its order parameter to oscillate. These oscillations generate spin
waves, which is analogous to an oscillating charge generating electromagnetic
radiation. The s... | 1809.10484v1 |
2018-07-03 | Spin pinning and spin-wave dispersion in nanoscopic ferromagnetic waveguides | Spin waves are investigated in Yttrium Iron Garnet (YIG) waveguides with a
thickness of 39 nm and widths ranging down to 50 nm, i.e., with aspect ratios
thickness over width approaching unity, using Brillouin Light Scattering
spectroscopy. The experimental results are verified by a semi-analytical theory
and micromagne... | 1807.01358v3 |
2017-06-06 | Temperature scaling of the Dzyaloshinsky-Moriya interaction in the spin wave spectrum | The temperature scaling of the micromagnetic Dzyaloshinsky-Moriya exchange
interaction is calculated for the whole range of temperature. We use Green's
function theory to derive the finite-temperature spin wave spectrum of
ferromagnetic systems described by a classical atomistic spin model
Hamiltonian. Within this mode... | 1706.01684v1 |
2021-11-29 | Tailoring High-Frequency Magnonics in Monolayer Chromium Trihalides | Monolayer chromium trihalides, the archetypal two dimensional (2D) magnetic
materials, are readily suggested as a promising platform for high frequency
magnonics. Here we detail the spin wave properties of monolayer CrBr$_3$ and
CrI$_3$, using spin dynamics simulations parametrized from the first
principles. We reveal ... | 2111.14305v1 |
2022-11-20 | Long-distance propagation of high-velocity antiferromagnetic spin waves | We report on coherent propagation of antiferromagnetic (AFM) spin waves over
a long distance ($\sim$10 $\mu$m) at room temperature in a canted AFM
$\alpha$-Fe$_2$O$_3$ with the Dzyaloshinskii-Moriya interaction (DMI).
Unprecedented high group velocities (up to 22.5 km/s) are characterized by
microwave transmission usin... | 2211.10989v1 |
2023-02-14 | Spin wave Hamiltonian and anomalous scattering in NiPS$_3$ | We report a comprehensive spin wave analysis of the semiconducting honeycomb
van der Waal antiferromagnet NiPS$_3$. Using single crystal inelastic neutron
scattering, we map out the full Brillouin zone and fit the observed modes to a
spin wave model with rigorously defined uncertainty. We find that the third
neighbor e... | 2302.07242v2 |
2023-04-03 | Spin waves in layered antiferromagnets with honeycomb structure | We develop a description of spin waves in a $3D$ quantum $XY$ antiferromagnet
(AFM) in terms of macroscopic variables, magnetization and N\'eel vector
densities. We consider a layered AFM with spins located on the honeycomb
lattice. In the discussed system, the spectrum of spin waves consists of four
modes, all well ca... | 2304.00700v1 |
2018-08-15 | Mode-conversion of the extraordinary wave at the upper hybrid resonance in the presence of small-amplitude density fluctuations | In spherical tokamaks, the electron plasma frequency is greater than the
electron cyclotron frequency. Electromagnetic waves in the electron cyclotron
range of frequencies are unsuitable for directly heating such plasmas due to
their reduced accessibility. However, mode-conversion of the extraordinary wave
to the elect... | 1808.05282v2 |
2019-11-18 | Optical control of an individual Cr spin in a semiconductor quantum dot | We demonstrate that the spin of a Cr atom in a quantum dot (QD) can be
controlled optically and we discuss the main properties of this single spin
system. The photoluminescence of individual Cr-doped QDs and their evolution in
magnetic field reveal a large magnetic anisotropy of the Cr spin induced by
local strain. Thi... | 1911.08572v1 |
2020-06-17 | Recent Progress on Electrical Excitation and Manipulation of Spin-Waves in Spin Hall Nano-Oscillators | Spin waves (SWs), the collective precessional motion of spins in a magnetic
system, have been proposed as a promising alternative system with low-power
consumption for encoding information. Spin Hall nano-oscillator (SHNO), a
new-type spintronic nano-device, can electrically excite and control spin waves
in both nanosc... | 2006.09737v2 |
2018-10-25 | Light-Quark Resonances at COMPASS | The main goal of the spectroscopy program at COMPASS is to explore the
light-meson spectrum in the mass range below about $2\,\text{GeV}/c^2$ using
diffractive dissociation reactions. Our flagship channel is the production of
three charged pions in the reaction: $\pi^- + p \to \pi^-\pi^-\pi^+ +
p_\text{recoil}$, for wh... | 1810.10805v1 |
2005-04-13 | NMR relaxation rate in non-centrosymmetric superconductors | The spin-lattice relaxation rate of nuclear magnetic resonance in a clean
superconductor without inversion center is calculated for arbitrary pairing
symmetry and band structure, in the presence of strong spin-orbit coupling. | 0504342v1 |
2020-10-03 | Modulated longitudinal gates on encoded spin-qubits via curvature couplings to a superconducting cavity | We propose entangling operations based on the energy curvature couplings of
encoded spin qubits to a superconducting cavity, exploring the non-linear qubit
response to a gate voltage variation. For a two-qubit ($n$-qubit) entangling
gate we explore acquired geometric phases via a time-modulated longitudinal
$\sigma_z$-... | 2010.01233v1 |
2022-03-15 | Spin-optical dynamics and quantum efficiency of single V1 center in silicon carbide | Color centers in silicon carbide are emerging candidates for distributed
spin-based quantum applications due to the scalability of host materials and
the demonstration of integration into nanophotonic resonators. Recently,
silicon vacancy centers in silicon carbide have been identified as a promising
system with excell... | 2203.08177v2 |
2001-12-19 | Spin-phonon interaction in doped high-T$_C$ superconductors from density functional calculations | Effects of coupling between phonon distortions and stripe-like spin waves in
the CuO plane of HgBa$_2$CuO$_4$ are studied by band calculations. Local
exchange enhancements depend sensitively on the local structure around Cu
sites. Interactions where spin waves have twice as long wave length as phonon
waves can lead to ... | 0112357v1 |
1997-01-27 | Massless fields in plane wave geometry | Conformal isometry algebras of plane wave geometry are studied. Then, based
on the requirement of conformal invariance, a definition of masslessness is
introduced and gauge invariant equations of motion, subsidiary conditions, and
corresponding gauge transformations for all plane wave geometry massless spin
fields are ... | 9701141v1 |
2009-01-15 | Spin-Wave Instabilities and Non-Collinear Magnetic Phases of a Geometrically-Frustrated Triangular-Lattice Antiferromagnet | This paper examines the relation between the spin-wave instabilities of
collinear magnetic phases and the resulting non-collinear phases for a
geometrically-frustrated triangular-lattice antiferromagnet in the high spin
limit. Using a combination of phenomenological and Monte-Carlo techniques, we
demonstrate that the i... | 0901.2336v1 |
2012-05-08 | Quantum phases of Bose-Bose mixtures on a triangular lattice | We investigate the zero temperature quantum phases of a Bose-Bose mixture on
a triangular lattice using Bosonic Dynamical Mean Field Theory (BDMFT). We
consider the case of total filling one where geometric frustration arises for
asymmetric hopping. We map out a rich ground state phase diagram including
xy-ferromagneti... | 1205.1806v2 |
2021-07-04 | Spin optics for gravitational waves | We present the geometric optics expansion for circularly polarized
gravitational waves on a curved spacetime background, to subleading order. We
call spin optics to the subleading order geometric optics expansion, which
involves modifying the standard eikonal function by including a specially
chosen helicity-dependent ... | 2107.02761v3 |
2023-03-09 | Full-waveform tomography reveals iron spin crossover in Earth lower mantle | Joint interpretation of bulk and shear wave speeds constrains the chemistry
of the deep mantle. At all depths, the diversity of wave speeds cannot be
explained by an isochemical mantle. Between 1000 and 2500 km depth,
hypothetical mantle models containing an electronic spin crossover in (Mg,Fe)O
provide a significantly... | 2303.05476v1 |
2016-01-08 | Kinetic Simulation of Slow Magnetosonic Waves and Quasi-periodic Upflows in the Solar Corona | Quasi-periodic disturbances of emission-line parameters are frequently
observed in the corona. These disturbances propagate upward along the magnetic
field with speeds $\sim100~\rm{km~s}^{-1}$. This phenomenon has been
interpreted as evidence of the propagation of slow magnetosonic waves or argued
to be signature of th... | 1601.01823v1 |
2017-11-08 | Modulation instability of lower hybrid waves leading to cusp solitons in electron-positron-ion Thomas Fermi plasma | Following the idea of three wave resonant interactions of lower hybrid waves
it is shown that quantum -modified lower hybrid (QLH) wave in electron positron
ion plasma with spatial dispersion can decay into another QLH wave ( where
electron and positrons are activated whereas ions remain in the background) and
another ... | 1711.03186v1 |
2023-11-27 | Control water waves by metagratings | Metasurfaces and metagratings offers new platforms for electromagnetic wave
control with significant responses. However, metasurfaces based on abrupt phase
change and resonant structures suffer from the drawback of high loss and face
challenges when applied in water waves. Therefore, the application of
metasurfaces in ... | 2311.15795v1 |
2013-02-26 | Resonant state selection in synthetic ferrimagnets | Resonant activation of a synthetic antiferromagnet (SAF) is known to result
in a dynamic running state, where the SAF's symmetric spin-flop pair
continuously rotates between the two antiparallel ground states of the system,
with the two magnetic moments in-phase in the so-called acoustical
spin-resonance mode. The symm... | 1302.6483v2 |
2015-04-23 | Subharmonic transitions and Bloch-Siegert shift in electrically driven spin resonance | We theoretically study coherent subharmonic (multi-photon) transitions of a
harmonically driven spin. We consider two cases: magnetic resonance (MR) with a
misaligned, i.e., non-transversal driving field, and electrically driven spin
resonance (EDSR) of an electron confined in a one-dimensional, parabolic
quantum dot, ... | 1504.06081v2 |
2017-12-18 | Search for heavy $ZZ$ resonances in the $\ell^+\ell^-\ell^+\ell^-$ and $\ell^+\ell^-ν\barν$ final states using proton proton collisions at $\sqrt{s}= 13$ TeV with the ATLAS detector | A search for heavy resonances decaying into a pair of $Z$ bosons leading to
$\ell^+\ell^-\ell^+\ell^-$ and $\ell^+\ell^-\nu\bar\nu$ final states, where
$\ell$ stands for either an electron or a muon, is presented. The search uses
proton proton collision data at a centre-of-mass energy of 13 TeV corresponding
to an inte... | 1712.06386v2 |
2017-04-11 | Synergetic effect of spin-orbit coupling and Zeeman splitting on the optical conductivity in the one-dimensional Hubbard model | We study how the synergetic effect of spin-orbit coupling (SOC) and Zeeman
splitting (ZS) affects the optical conductivity in the one-dimensional Hubbard
model using the Kubo formula. We focus on two phenomena: (1) the electric
dipole spin resonance (EDSR) in the metallic regime and (2) the optical
conductivity in the ... | 1704.03153v2 |
2020-05-13 | Neutron spin resonance in a quasi-two-dimensional iron-based superconductor | Magnetically mediated Cooper pairing is generally regarded as a key to
establish the unified mechanism of unconventional superconductivity. One
crucial evidence is the neutron spin resonance arising in the superconducting
state, which is commonly interpreted as a spin-exciton from collective
particle-hole excitations c... | 2005.06146v1 |
2013-02-19 | Readout and control of a single nuclear spin with a meta-stable electron spin ancilla | Electron and nuclear spins associated with point defects in insulators are
promising systems for solid state quantum technology. While the electron spin
usually is used for readout and addressing, nuclear spins are exquisite quantum
bits and memory systems. With these systems single-shot readout of nearby
nuclear spins... | 1302.4608v1 |
2019-04-26 | Measurement of the Spin Tune Using the Coherent Spin Motion of Polarized Proton in a Storage Ring | This paper reports the first spin tune measurement at high energies (24 GeV
and 255 GeV) with a driven coherent spin motion. To maintain polarization in a
polarized proton collider, it is important to know the spin tune of the
polarized proton beam, which is defined as the number of full spin precessions
per revolution... | 1904.12049v1 |
1998-06-25 | Quantum Hall effect anomaly and collective modes in the magnetic-field-induced spin-density-wave phases of quasi-one-dimensional conductors | We study the collective modes in the magnetic-field-induced spin-density-wave
(FISDW) phases experimentally observed in organic conductors of the Bechgaard
salts family. In phases that exhibit a sign reversal of the quantum Hall effect
(Ribault anomaly), the coexistence of two spin-density waves gives rise to
additiona... | 9806311v2 |
1999-09-10 | Time Evolution of Spin Waves | A rigorous derivation of macroscopic spin-wave equations is demonstrated. We
introduce a macroscopic mean-field limit and derive the so-called
Landau-Lifshitz equations for spin waves. We first discuss the ferromagnetic
Heisenberg model at T=0 and finally extend our analysis to general spin
hamiltonians for the same cl... | 9909146v1 |
2000-05-26 | Spin and charge excitations in incommensurate spin density waves | Collective excitations both for spin- and charge-channels are investigated in
incommensurate spin density wave (or stripe) states on two-dimensional Hubbard
model. By random phase approximation, the dynamical susceptibility
\chi(q,\omega) is calculated for full range of (q,\omega) with including all
higher harmonics co... | 0005466v1 |
2002-10-04 | Current-induced spin-wave excitations in a single ferromagnetic layer | A new current induced spin-torque transfer effect has been observed in a
single ferromagnetic layer without resorting to multilayers. At a specific
current density of one polarity injected from a point contact, abrupt
resistance changes due to current-induced spin wave excitations have been
observed. The critical curre... | 0210116v1 |
2004-11-13 | Existence of the Spin-Wave Gap in a Deformed Flat-Band Hubbard Model | We consider a deformed flat-band Hubbard model under a periodic boundary
condition in arbitrary dimensions. We show that the ground state is only
all-spin-up or -down state. We obtain upper and lower bounds of the one-magnon
spin-wave energy with an arbitrary momentum. This dispersion relation is the
same as that in th... | 0411362v1 |
2004-05-11 | Spin structure of spin-1/2 baryon and spinless meson production amplitudes in photo and hadronic reactions | The most general spin structures of the spin-1/2 baryon and spinless meson
production operator for both photon and nucleon induced reactions are derived
from the partial-wave expansions of these reaction amplitudes. The present
method provides the coefficients multiplying each spin operator in terms of the
partial-wave... | 0405030v4 |
2007-01-10 | Experimental demonstration of stimulated polarization wave in a chain of nuclear spins | A stimulated wave of polarization, which implements a simple mechanism of
quantum amplification, is experimentally demonstrated in a chain of four
J-coupled nuclear spins, irradiated by a weak radio-frequency transverse field.
The "quantum domino" dynamics, a wave of flipped spins triggered by a flip of
the first spin,... | 0701056v1 |
2007-08-09 | Spin-wave spectra of a kagome stripe | We study ground state degeneracy and spin-wave excitations in a 1D version of
a Kagome antiferromagnet -- a Heisenberg antiferromagnet on a Kagome stripe. We
show that for nearest-neighbor interaction, the classical ground state is
infinitely degenerate. For any spin configuration from the degenerate set, the
classical... | 0708.1272v1 |
2009-06-09 | Spin-wave theory for dimerized ferromagnetic chains | We describe a Peierls dimerization which occurs in ferromagnetic spin chains
at finite temperature, within the modified spin-wave theory. Usual spin-wave
theory is modified by introducing a Lagrange multiplier which enforces a
nonmagnetic state at finite temperature. It is shown that this method gives
results in excell... | 0906.1758v1 |
2009-12-25 | Near-Boundary and Bulk Regions of a Semi-Infinite Two-Dimensional Heisenberg Antiferromagnet | Using the spin-wave approximation elementary excitations of a semi-infinite
two-dimensional $S=\frac12$ Heisenberg antiferromagnet are considered. The
spectrum consists of bulk modes -- standing spin waves and a
quasi-one-dimensional mode of boundary spin waves. These latter excitations
eject bulk modes from two bounda... | 0912.4958v1 |
2010-02-23 | Planar Dirac diffusion | We present the results of the planar diffusion of a Dirac particle by step
and barrier potentials, when the incoming wave impinges at an arbitrary angle
with the potential. Except for right-angle incidence this process is
characterized by the appearance of spin flip terms. For the step potential,
spin flip occurs for b... | 1002.4324v1 |
2010-08-11 | Chirality, charge and spin-density wave instabilities of a two-dimensional electron gas in the presence of Rashba spin-orbit coupling | We show that a result equivalent to Overhauser's famous Hartree-Fock
instability theorem can be established for the case of a two-dimensional
electron gas in the presence of Rashba spin-obit coupling. In this case it is
the spatially homogeneous paramagnetic chiral ground state that is shown to be
differentially unstab... | 1008.1816v1 |
2010-09-15 | Anomalous High-Energy Spin Excitations in La2CuO4 | Inelastic neutron scattering is used to investigate the collective magnetic
excitations of the high-temperature superconductor parent antiferromagnet
La2CuO4. We find that while the lower energy excitations are well described by
spin-wave theory, including one- and two-magnon scattering processes, the
high-energy spin ... | 1009.2915v1 |
2011-12-16 | Guiding and Trapping Electron Spin Waves in Atomic Hydrogen Gas | We present a high magnetic field study of electron spin waves in atomic
hydrogen gas compressed to high densities of 10^18 cm^-3 at temperatures
ranging from 0.26 to 0.6 K. We observed a variety of spin wave modes caused by
the identical spin rotation effect with strong dependence on the spatial
profile of the polarizi... | 1112.3775v3 |
2014-12-11 | Magnetic field induced spin-wave energy focusing | Spin waves can transport both energy and angular momentum over long distances
as they propagate. However, due to damping, their amplitude decreases
exponentially as they move away from the source, leaving little capability for
manipulating how much energy and angular momentum is to be delivered where.
Here we show that... | 1412.4129v1 |
2015-05-27 | Acoustic waves generated by the spin precession | We study generation of acoustic waves by a precessing spin of a nanoparticle
deposited on the surface of a solid. Our approach elucidates macroscopic
dynamics of the Einstein - de Haas effect. It is based upon solution of
parameter-free equations of motion mandated by the conservation of the total
angular momentum: spi... | 1505.07373v1 |
2016-05-12 | Transmission of spin waves in ordered FeRh epitaxial thin films | We report on B2-ordering dependence of magnetostatic surface spin waves in
ferromagnetic FeRh at room temperature. Spin waves transmit over a distance
longer than 21 {\mu}m in highly ordered FeRh alloys even with relatively large
spin-orbit interaction. The long-range transmission likely arises from the
induced Rh mome... | 1605.03798v1 |
2018-06-19 | Scalar Tops and Perturbed Quadrupoles: Probing Fundamental Physics with Spin-Precessing Binaries | Parity violation in the gravitational interaction has an important impact on
fundamental observables and the evolution of the universe. We here investigate
for the first time our ability to probe the parity violating nature of the
gravitational interaction using gravitational waves from spin-precessing
binaries. Focusi... | 1806.07425v1 |
2022-07-30 | Inertial spin waves in ferromagnets and antiferromagnets | Inertial effects in spin dynamics are theoretically predicted to emerge at
ultrashort time scales, but their experimental signatures are often ambiguous.
Here, we calculate the spin-wave spectrum in ferromagnets and two-sublattice
antiferromagnets in the presence of inertial effects. It is shown how
precession and nuta... | 2208.00131v1 |
2022-12-29 | Localized Spin-Wave Modes and Microwave Absorption in Random-Anisotropy Ferromagnets | The theory of localized spin-wave excitations in random-anisotropy magnets
has been developed. Starting with a pure Heisenberg ferromagnet, we study the
evolution of standing spin waves in a finite-size sample towards localized
modes on increasing the strength of random anisotropy. Profiles of the
localized modes and t... | 2212.14301v1 |
2004-08-05 | Spectroscopy of spontaneous spin noise as a probe of spin dynamics and magnetic resonance | Not all noise in experimental measurements is unwelcome. Certain fundamental
noise sources contain valuable information about the system itself -- a notable
example being the inherent voltage fluctuations that exist across any resistor
(Johnson noise), from which temperature may be determined[1,2]. In magnetic
systems,... | 0408107v1 |
2012-11-25 | Ambient Nanoscale Sensing with Single Spins Using Quantum Decoherence | Magnetic resonance detection is one of the most important tools used in
life-sciences today. However, as the technique detects the magnetization of
large ensembles of spins it is fundamentally limited in spatial resolution to
mesoscopic scales. Here we detect the natural fluctuations of nanoscale spin
ensembles at ambi... | 1211.5749v1 |
2013-02-12 | Induction-Detection Electron Spin Resonance with Sensitivity of 1000 Spins: En Route to Scalable Quantum Computations | Spin-based quantum computation (QC) in the solid state is considered to be
one of the most promising approaches to scalable quantum computers. However, it
faces problems such as initializing the spins, selectively addressing and
manipulating single spins, and reading out the state of the individual spins.
We have recen... | 1302.2891v1 |
2013-04-30 | Nuclear-electronic spin systems, magnetic resonance, and quantum information processing | A promising platform for quantum information processing is that of silicon
impurities, where the quantum states are manipulated by magnetic resonance.
Such systems, in abstraction, can be considered as a nucleus of arbitrary spin
coupled to an electron of spin one-half via an isotropic hyperfine interaction.
We therefo... | 1305.0039v2 |
2015-03-26 | Spin-orbit interaction in bent carbon nanotubes: resonant spin transitions | We develop an effective tight-binding Hamiltonian for spin-orbit (SO)
interaction in bent carbon nanotubes (CNT) for the electrons forming the $\pi$
bonds between the nearest neighbor atoms. We account for the bend of the CNT
and the intrinsic spin-orbit interaction which introduce mixing of $\pi$ and
$\sigma$ bonds be... | 1503.07764v2 |
2015-08-09 | Dynamic detection of electron spin accumulation in ferromagnet-semiconductor devices by ferromagnetic resonance | A distinguishing feature of spin accumulation in ferromagnet-semiconductor
devices is precession of the non-equilibrium spin population of the
semiconductor in a magnetic field. This is the basis for detection techniques
such as the Hanle effect, but these approaches become less effective as the
spin lifetime in the se... | 1508.02093v1 |
2021-08-02 | Quantum Computation Protocol for Dressed Spins in a Global Field | Spin qubits are contenders for scalable quantum computation because of their
long coherence times demonstrated in a variety of materials, but individual
control by frequency-selective addressing using pulsed spin resonance creates
severe technical challenges for scaling up to many qubits. This individual
resonance cont... | 2108.00798v2 |
2021-02-28 | Spin and charge interconversion in Dirac semimetal thin films | We report spin-to-charge and charge-to-spin conversion at room temperature in
heterostructure devices that interface an archetypal Dirac semimetal, Cd3As2,
with a metallic ferromagnet, Ni0.80Fe0.20 (permalloy). The spin-charge
interconversion is detected by both spin torque ferromagnetic resonance and
ferromagnetic res... | 2103.00653v1 |
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