publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
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2023-12-20 | Flux coupled tunable superconducting resonator | We present a design and implementation of frequency-tunable superconducting
resonator. The resonance frequency tunability is achieved by flux-coupling a
superconducting LC-loop to a current-biased feedline; the resulting screening
current leads to a change of the kinetic inductance and shift in the resonance
frequency.... | 2312.12755v1 |
2023-06-20 | Dynamical nuclear spin polarization in a quantum dot with an electron spin driven by electric dipole spin resonance | We analyze the polarization of nuclear spins in a quantum dot induced by a
single-electron spin that is electrically driven to perform coherent Rabi
oscillations. We derive the associated nuclear-spin polarization rate and
analyze its dependence on the accessible control parameters, especially the
detuning of the drivi... | 2306.11253v2 |
2012-10-07 | Complete classification of discrete resonant Rossby/drift wave triads on periodic domains | We consider the set of Diophantine equations that arise in the context of the
barotropic vorticity equation on periodic domains, when nonlinear wave
interactions are studied to leading order in the amplitudes. The solutions to
this set of Diophantine equations are of interest in atmosphere (Rossby waves)
and Tokamak pl... | 1210.2036v2 |
2014-11-10 | Comprehensive analysis of the wave function of a hadronic resonance and its compositeness | We develop a theoretical framework to investigate the two-body composite
structure of a resonance as well as a bound state from its wave function. For
this purpose, we introduce both one-body bare states and two-body scattering
states, and define the compositeness as a fraction of the contribution of the
two-body wave ... | 1411.2308v4 |
1993-01-26 | Order of Two-Dimensional Isotropic Dipolar Antiferromagnets | The question of the existence of order in two-dimensional isotropic dipolar
Heisenberg antiferromagnets is studied. It is shown that the dipolar
interaction leads to a gap in the spin-wave energy and a nonvanishing order
parameter. The resulting finite N\'eel-temperature is calculated for a square
lattice by means of l... | 9301033v1 |
1994-10-07 | Crossover from Spin-Density-Wave to Neel-like Ground state | The characterization and evolution of a Spin Density Wave into the Quantum
Neel ground state is considered in the context of a weak coupling theory of the
half-filled Hubbard model. Magnetic properties obtained from this weak coupling
approach in one dimension compare favorably with exact results from Bethe
ansatz (BA)... | 9410019v1 |
1994-10-19 | Spin Wave Frequency and Critical Dynamics of Ferromagnets Below T_C | Employing mode-coupling theory we show that the amplitude of the spin wave
frequency scaling function for the isotropic Heisenberg Hamiltonian is
universal. Theoretical and experimental values for Fe, Ni, Co, EuO, and EuS
agree quite well. Recent measurements of the longitudinal line width in Ni are
explained quantitat... | 9410073v1 |
1997-03-25 | Spin waves and phase diagram of one-dimensional, dipolar antiferromagnets | We report on the properties of a dipolar, antiferromagnetic chain in the
framework of linear spin-wave theory. The phase diagram is calculated for an
arbitrary ratio of dipolar interaction to exchange interaction and for fields
both parallel and perpendicular to the chain direction. The calculated
magnetization is comp... | 9703218v1 |
1998-12-15 | Spinon Superconductivity and Superconductivities Mediated by Spin-Waves and Phonons in Cuprates | The disclosure of spinon superconductivity and superconductivity mediated by
spin-waves in hole-doped Bi2212 cuprate raises the question about the origin of
the superconductivity in other cuprates and specially in an electron-doped NCCO
cuprate. | 9812245v2 |
2000-04-18 | Topological Defects in Spin Density Waves | The rich order parameter of Spin Density Waves allows for unusual object of a
complex topological nature: a half-integer dislocation combined with a
semi-vortex of a staggered magnetization. It becomes energetically preferable
to ordinary dislocation due to enhanced Coulomb interactions in the
semiconducting regime. Ge... | 0004313v1 |
2002-01-10 | Spin wave dispersion in La2CuO4 | We calculate the antiferromagnetic spin wave dispersion in the half-filled
Hubbard model for a two-dimensional square lattice and find it to be in
excellent agreement with recent high-resolution inelastic neutron scattering
performed on La2CuO4 [Phys. Rev. Lett. 86, 5377 (2001)]. | 0201151v2 |
2002-05-07 | Spin-wave spectrum in La2CuO4 -- double occupancy and competing interaction effects | The recently observed spin-wave energy dispersion along the AF zone boundary
in La2CuO4 is discussed in terms of double occupancy and competing interaction
effects in the $t-t'$ Hubbard model on a square lattice. | 0205117v1 |
2005-01-28 | Magnetic Phase Transition in FeRh | Density functional calculations are performed to investigate the phase
transition in FeRh alloy. The effective exchange coupling, the critical
temperature of magnetic phase transition and the adiabatic spin wave spectrum
have been obtained. Different contributions to the free energy of different
phases are estimated. I... | 0501701v1 |
2005-10-10 | Recent results on energy relaxation in disordered charge and spin density waves | We briefly review different approaches used recently to describe collective
effects in the strong pinning model of disordered charge and spin density
waves, in connection with the CRTBT very low temperature heat relaxation
experiments. | 0510217v1 |
2005-10-30 | Domain instability during precessional magnetization reversal | Spin wave equations in the non-equilibrium precessing state of a
ferromagnetic system are found. They show a spin-wave instability towards
growing domains of stable magnetization. Precession of the uniform
magnetization mode is described by the Landau Lifshitz equation with the
exponentially growing in time effective G... | 0510817v1 |
2002-08-25 | Spinning particles in gravitational wave spacetime | The dynamics of pseudo-classical spinning particles in spacetime of
gravitational plane waves of general polarization and harmonic profile is
studied. The resulting equations of motion are solved exactly and the results
are compared with those of the other approaches. The relative accelerations of
nearby particles is a... | 0208072v1 |
2005-10-20 | Charged particles with spin in a gravitational wave and a uniform magnetic field | We study the motion of a pseudo-classical charged particle with spin in the
space-time of a gravitational pp wave in the presence of a uniform magnetic
field. | 0510094v2 |
2006-01-13 | Symmetric discrete quotients of supersymmetric Hpp-waves and spin structures | We explore the importance of the choice of spin structure in determining the
amount of supersymmetry preserved by a symmetric M-theory background
constructed by quotienting a supersymmetric Hpp-wave with a discrete subgroup
in the centraliser of its isometry group. | 0601087v1 |
2007-10-01 | Next to leading order gravitational wave emission and dynamical evolution of compact binary systems with spin | Compact binary systems with spinning components are considered. Finite size
effects due to rotational deformation are taken into account. The dynamical
evolution and next to leading order gravitational wave forms are calculated,
taking into account the orbital motion up to the first post-Newtonian
approximation. | 0710.0258v2 |
2009-03-01 | Excitonic spin density wave state in iron pnictides | We examine the appearance of a spin density wave in the FeAs parent compounds
due to an excitonic instability. Using a realistic four-band model, we show
that the magnetic state depends very sensitively upon the details of the band
structure. We demonstrate that an orthorhombic distortion of the crystal
enhances the st... | 0903.0124v1 |
2010-10-13 | Comment on "Composite excitation of Josephson phase and spin waves in ferromagnetic Josephson junctions" (S.Hikino, M.Mori, S.Takahashi, and S.Maekawa, arXiv:1009.3551) | We clarify the applicability of the quasistatic approximation used in Ref.
[\onlinecite{VE}], where coupled spin and Josephson plasma waves have been
predicted to exist in SIFS Josephson junctions. We show, contrary to the claim
of the authors of Ref. [\onlinecite{Maekawa}], that this approximation is very
accurate in ... | 1010.2680v1 |
2020-12-04 | Spin Wave Electromagnetic Nonlinear Interaction to Move RF Limiter Frequency Range to Higher Frequencies | It is shown here that the usual operating frequencies for RF limiters, in the
nominal 5, 11 or 15 GHz center frequencies, can be lifted up into the much
higher frequencies of the 40 to 60 GHz range by a new formula developed from
fundamental spin wave electromagnetic interactions in magnetic material
characterized by a... | 2012.05687v1 |
2000-06-19 | Dynamic Fano Resonance of Quasienergy Excitons in Superlattices | The dynamic Fano resonance (DFR) between discrete quasienergy excitons and
sidebands of their ionization continua is predicted and investigated in dc- and
ac-driven semiconductor superlattices. This DFR, well controlled by the ac
field, delocalizes the excitons and opens an intrinsic decay channel in
nonlinear four-wav... | 0006276v1 |
2001-07-26 | Frequency-dependent rigidity in large-scale interferometric gravitational-wave detectors | Electromagnetic rigidity which exists in large-scale optical resonators if
pumping frequency is detuned from the eigenfrequency of resonator have
sophisticated spectral dependence which allows to obtain sensitivity better
than the Standard Quantum Limits both for the free test mass and the harmonic
oscillator. | 0107084v2 |
2000-12-25 | Propagation and interaction of extremely short electromagnetic pulses in non-linear media | Propagation of the extremely short electromagnetic pulse in non-linear
dielectric media without the slowly varying envelope approximation is
discussed. The models under consideration take into account both resonant and
not-resonant excitations of non-linear medium, and polarisation states of
electromagnetic wave. Stead... | 0012054v1 |
1998-06-02 | Qualitative analysis on the existence of bound excited states and low-lying resonances of the dipositronium | Symmetry has imposed very strong constraints on the structures of internal
wave functions and on the accessibility of outgoing channels. Based on symmetry
consideration, the existence of a number of bound excited states and low-lying
resonances has been suggested. | 9806005v1 |
2004-04-15 | Manipulating the scattering length of a Bose - Einstein condensate in an amplitude - modulated optical lattice | The scattering length in a BEC confined in an amplitude - modulated optical
lattice can be manipulated by the modulation strength. Two standing laser waves
of main and sideband frequencies of an optical lattice induce a Raman
transition; due to resonant Raman driving the effective scattering length
depends on the modul... | 0404077v1 |
2005-06-06 | The Sagnac effect in Coupled-Resonator Slow-Light Waveguide Structures | We study the effect of rotation on the propagation of electromagnetic waves
in slow-light waveguide structures consisting of coupled micro-ring resonators.
We show that such configurations exhibit new a type of the Sagnac effect which
can be used for the realization of highly-compact integrated rotation sensors
and gyr... | 0506039v1 |
1998-07-03 | Entanglement Induced Radiation Processes Which are First Order in Weak Field | Nonlinear processes of light scattering on a two-level system near resonance
are considered. The problem is reduced to the emission and absorption of an
entangled system, formed by a strong resonant field and a two-level system,
having a non-factorizing wave function. | 9807011v1 |
2001-06-13 | Relativistic Quantum Theory of Cyclotron Resonance in a Medium | In this paper the relativistic quantum theory of cyclotron resonance in an
arbitrary medium is presented. The quantum equation of motion for charged
particle in the field of plane electromagnetic wave and uniform magnetic field
in a medium is solved in the eikonal approximation. The probabilities of
induced multiphoton... | 0106074v1 |
2005-09-01 | Entanglement in resonant photon scattering | Single--photon which is initially uncorrelated with atom, will evolve to be
entangled with the atom on their continuous kinetic variables in the process of
resonant scattering. We find the relations between the entanglement and their
physical control parameters, which indicates that high entanglement can be
reached by ... | 0509003v2 |
2006-08-01 | Classical search algorithm with resonances in $\sqrt{N}$ cycles | In this work we use the wave equation to obtain a classical analog of the
quantum search algorithm and we verify that the essence of search algorithms
resides in the establishment of resonances between the initial and the serched
states. In particular we show that, within a set of $N$ vibration modes, it is
possible to... | 0608019v1 |
2009-07-22 | Spreading of the conception of permanent resonance to wave motions over lattices | Discovered by us [1] special (permanent) resonance mechanism of spectral zone
creation in periodic structures is generalized to the case of discrete space
lattices and finite difference Schroedinger equation with local V(n) and
minimally nonlocal U(n). It would be interesting to generalize the periodicity
formalism to ... | 0907.3788v1 |
2010-01-23 | Fano Resonances in High-Tc Superconducting Metamaterial | We demonstrate a millimeter-wave range metamaterial fabricated from cuprate
superconductor. Two complementary metamaterial structures have been studied,
which exhibit Fano resonances emerging from the collective excitation of
interacting magnetic and electric dipole modes. | 1001.4154v1 |
2010-11-11 | Quantized open chaotic systems | Two different "wave chaotic" systems, involving complex eigenvalues or
resonances, can be analyzed using common semiclassical methods. In particular,
one obtains fractal Weyl upper bounds for the density of resonances/eigenvalues
near the real axis, and a classical dynamical criterion for a spectral gap. | 1011.2557v2 |
2012-01-14 | Time Delay Plot for Pion-Nucleon Elastic Scattering | We evaluated the time delay plot in the established region of the Delta(1232)
resonance through the use of elastic scattering phase shift analysis of the
partial wave amplitude P33. The pole position and width of the Delta(1232)
resonance were obtained and found in agreement with earlier calculations. | 1201.3044v1 |
2012-02-07 | Resonant laser tunnelling | We propose an experiment involving a gaussian laser tunneling through a twin
barrier dielectric structure. Of particular interest are the conditions upon
the incident angle for resonance to occur. We provide some numerical
calculations for a particular choice of laser wave length and dielectric
refractive index which c... | 1202.1474v1 |
2013-10-21 | Final comment to the results of Bustamante et al. on discrete Rossby/drift wave resonant and quasi-resonant triads | In this final note we demonstrate that the authors of manuscripts
arXiv:1210.2036, arXiv:1309.0405 and arXiv:1309.5513 use mathematical notations
and notions sometimes in the standard meaning and sometimes in a sense which
differs from the standard. As this specific use is not defined beforehand, the
authors' statement... | 1310.5625v1 |
2014-08-04 | Quantum statistics of four-wave mixing by a non-linear resonant microcavity | We analyse the correlation and spectral properties of two-photon states
resonantly transmitted by a non-linear optical microcavity. We trace the
correlation properties of transmitted two-photon states to the decay spectrum
of multi-photon resonances in the non-linear microcavity. | 1408.0783v1 |
2016-02-17 | Telegraph equations for the case of a waveguide with moving boundary | Telegraph equation describing the compression of electromagnetic waves in a
waveguide (resonator) with moving boundary are derived. It is shown that the
character of oscillations of the compressed electromagnetic field depends on
the parameters of the resonator, and under certain conditions, the oscillations
of voltage... | 1602.05417v1 |
2021-02-25 | Localized structures in dispersive and doubly resonant optical parametric oscillators | We study temporally localized structures in doubly resonant degenerate
optical parametric oscillators in the absence of temporal walk-off. We focus on
states formed through the locking of domain walls between the zero and a
non-zero continuous wave solution. We show that these states undergo collapsed
snaking and we ch... | 2102.12864v1 |
2021-10-12 | Existence of resonances for Schrodinger operators on hyperbolic space | We prove existence results and lower bounds for the resonances of
Schr\"odinger operators associated to smooth, compactly support potentials on
hyperbolic space. The results are derived from a combination of heat and wave
trace expansions and asymptotics of the scattering phase. | 2110.06370v3 |
2020-07-07 | Superradiance by ferroelectrics in cavity resonators | A theory is presented showing that, under appropriate conditions, a
ferroelectric in a cavity resonator can emit superradiant pulses. Initially,
the ferroelectric has to be prepared in a nonequilibrium state from which it
relaxes emitting a coherent pulse in the infrared region. Polarization dipolar
waves play the role... | 2007.03300v1 |
1994-03-11 | The hole-hole superconducting pairing in t-J model induced by the long-range spin-wave exchange | Long-range $(r \sim p_F^{-1} \gg lattice \ spacing)$ spin-wave exchange
produces a very strong pairing of the holes. The different symmetry solutions
of BCS-type equation for the superconducting gap $\Delta$ are found. The most
strong pairing corresponds to $d$-wave symmetry. The physical reasons for the
strong pairing... | 9403045v1 |
2000-03-29 | Role of Phase Variables in Quarter-Filled Spin Density Wave States | Several kinds of spin density wave (SDW) states with both quarter-filled band
and dimerization are reexamined for a one-dimensional system with on-site,
nearest-neighbor and next-nearest-neighbor repulsive interactions, which has
been investigated by Kobayashi et al. (J. Phys. Soc. Jpn. 67 (1998) 1098).
Within the mean... | 0003464v1 |
1999-10-20 | Signature of chaos in gravitational waves from a spinning particle | A spinning test particle around a Schwarzschild black hole shows a chaotic
behavior, if its spin is larger than a critical value. We discuss whether or
not some peculiar signature of chaos appears in the gravitational waves emitted
from such a system. Calculating the emitted gravitational waves by use of the
quadrupole... | 9910064v1 |
2003-04-17 | Spin Waves as Metric in a Kinetic Space-Time | 1) A wave equation is derived from the kinetic equations governing media with
rotational as well as translational degrees of freedom. In this wave the
fluctuating quantity is a vector, the bulk spin. The transmission is similar to
compressive waves but propagation is possible even in the limit of
incompressibility, whe... | 0304063v5 |
1997-02-21 | New mechanism of collapse and revival in wave packet dynamics due to spin-orbit interaction | The article discusses the properties of time evolution of wave packets in a
few systems. Dynamics of wave packet motion for Rydberg atoms with the
hierarchy of collapses and revivals is briefly reviewed. The main part of the
paper focuses on the new mechanism of quantum reccurrences in wave packet
dynamics. This mechan... | 9702044v1 |
2007-11-15 | Electromagnetic wave-particle with spin and magnetic moment | An axisymmetric static solution of a nonlinear electrodynamics is considered
as a massive charged particle with spin and magnetic moment. A linearization of
the nonlinear electrodynamics around the static solution is investigated. The
appropriate problem for linear waves around the static solution is considered.
This w... | 0711.2499v1 |
2010-09-07 | Critical Correlations for Short-Range Valence-Bond Wave Functions on the Square Lattice | We investigate the arguably simplest $SU(2)$-invariant wave functions capable
of accounting for spin-liquid behavior, expressed in terms of nearest-neighbor
valence-bond states on the square lattice and characterized by different
topological invariants. While such wave-functions are known to exhibit
short-range spin co... | 1009.1307v2 |
2011-10-19 | Spin Waves in 2D ferromagnetic square lattice stripe | In this work, the area and edges spin wave calculations were carried out
using the Heisenberg Hamiltonian and the tridiagonal method for the 2D
ferromagnetic square lattice stripe, where the SW modes are characterized by a
1D in-plane wave vector $q_x$. The results show a general and an unexpected
feature that the area... | 1110.4369v1 |
2012-02-15 | Self-consistent spin waves in magnetized BEC | We obtain equations of quantum hydrodynamic (QHD) for magnetized spin-1
neutral Bose-Einstein condensate (BEC). System of QHD equations contains the
equation of magnetic moment evolution (an analog of the Bloch equation). We
account spin-spin interaction along with the short range interaction. We
consider self-consiste... | 1202.3398v1 |
2013-05-06 | The Pilot-Wave Perspective on Spin | The alternative pilot-wave theory of quantum phenomena -- associated
especially with Louis de Broglie, David Bohm, and John Bell -- reproduces the
statistical predictions of ordinary quantum mechanics, but without recourse to
special \emph{ad hoc} axioms pertaining to measurement. That (and how) it does
so is relativel... | 1305.1280v2 |
2015-04-14 | Vestigial chiral and charge orders from bidirectional spin-density waves: Application to the iron-based superconductors | Recent experiments in optimally hole-doped iron arsenides have revealed a
novel magnetically ordered ground state that preserves tetragonal symmetry,
consistent with either a charge-spin density wave (CSDW), which displays a
non-uniform magnetization, or a spin-vortex crystal (SVC), which displays a
non-collinear magne... | 1504.03656v3 |
2015-05-04 | Composite spin and quadrupole wave in the ordered phase of Tb$_{2+x}$Ti$_{2-x}$O$_{7+y}$ | The hidden ordered state of the frustrated pyrochlore oxide
Tb$_{2+x}$Ti$_{2-x}$O$_{7+y}$ is possibly one of the two electric multipolar,
or quadrupolar, states of the effective pseudospin-1/2 Hamiltonian derived from
crystal-field ground state doublets of non-Kramers Tb$^{3+}$ ions. These
long-range orders are antipar... | 1505.00503v5 |
2015-09-03 | Spin effects in Kapitza-Dirac scattering at light with elliptical polarization | The Kapitza-Dirac effect, which refers to electron scattering at standing
light waves, is studied in the Bragg regime with counterpropagating
elliptically polarized electromagnetic waves with the same intensity,
wavelength, and degree of polarization for two different setups. In the first
setup, where the electric-fiel... | 1509.01150v2 |
2016-02-24 | Exchange stiffness in ultrathin perpendicularly-magnetized CoFeB layers determined using spin wave spectroscopy | We measure the frequencies of spin waves in nm-thick perpendicularly
magnetized FeCoB systems, and model the frequencies to deduce the exchange
stiffness of this material in the ultrathin limit. For this, we embody the
layers in magnetic tunnel junctions patterned into circular nanopillars of
diameters ranging from 100... | 1602.07421v1 |
2016-09-23 | Spin waves in rings of classical magnetic dipoles | We theoretically and numerically investigate spin waves that occur in systems
of classical magnetic dipoles that are arranged at the vertices of a regular
polygon and interact solely via their magnetic fields. There are certain
limiting cases that can be analyzed in detail. One case is that of spin waves
as infinitesim... | 1609.07264v2 |
2012-09-17 | Nonlinear emission of spin-wave caustics from an edge mode of a micro-structured Co2Mn0.6Fe0.4Si waveguide | Magnetic Heusler materials with very low Gilbert damping are expected to show
novel magnonic transport phenomena. We report nonlinear generation of higher
harmonics leading to the emission of caustic spin-wave beams in a low-damping,
micro-structured Co2Mn0.6Fe0.4Si Heusler waveguide. The source for the higher
harmonic... | 1209.3669v2 |
2018-02-01 | Theory of spin and lattice wave dynamics excited by focused laser pulses | We develop a theory of the spin wave dynamics excited by ultrafast focused
laser pulses in a magnetic film. We take into account both volume and surface
spin wave modes in the presence of applied, dipolar and magnetic anisotropy
fields and include the dependence on laser spot exposure size and magnetic
damping. We show... | 1802.00178v2 |
2020-08-10 | Evidence of pair-density wave in doping Kitaev spin liquid on the honeycomb lattice | We study the effects of doping the Kitaev model on the honeycomb lattice
where the spins interact via the bond-directional interaction $J_K$, which is
known to have a quantum spin liquid as its exact ground state. The effect of
hole doping is studied within the $t$-$J_K$ model on a three-leg cylinder using
density-matr... | 2008.03858v1 |
2004-05-05 | Spin waves in a Bose Ferromagnet | It is shown that the ferromagnetic transition takes place always above
Bose-Einstein condensation in ferromagnetically coupled spinor Bose gases. We
describe the Bose ferromagnet within Ginzburg-Landau theory by a "two-fluid"
model below Bose-Einstein condensation. Both the Bose condensate and the normal
phase are spon... | 0405094v1 |
2017-03-16 | All-Angle Collimation for Spin Waves | We studied the effect of collimation for monochromatic beams of spin waves,
resulting from the refraction at the interface separating two magnetic
half-planes. The collimation was observed in broad range of the angles of
ncidence for homogenous Co and Py half-planes, due to significant intrinsic
anisotropy of spin wave... | 1703.05548v1 |
2019-10-25 | Twisted magnon as a magnetic tweezer | Wave fields with spiral phase dislocations carrying orbital angular momentum
(OAM) have been realized in many branches of physics, such as for photons,
sound waves, electron beams, and neutrons. However, the OAM states of magnons
(spin waves)$-$the building block of modern magnetism$-$and particularly their
implication... | 1910.11528v2 |
2021-01-28 | Néel domain wall as a tunable filter for optically excited magnetostatic waves | We present a concept of a tunable optical excitation of spin waves and
filtering their spectra in a ferromagnetic film with 180$^{\circ}$ N\'eel
domain wall. We show by means of micromagnetic simulation that the fluence of
the femtosecond laser pulse and its position with respect to the domain wall
affect the frequenci... | 2101.11931v3 |
2022-11-10 | High wave vector non-reciprocal spin wave beams | We report unidirectional transmission of micron-wide spin waves beams in a 55
nm thin YIG. We downscaled a chiral coupling technique implementing Ni80Fe20
nanowires arrays with different widths and lattice spacing to study the
non-reciprocal transmission of exchange spin waves down to lambda = 80 nm. A
full spin wave s... | 2211.05514v2 |
2023-04-11 | Sensitive detection of millimeter wave electric field by driving trapped surface-state electrons | Sensitive detection of electromagnetic wave electric field plays an important
role for electromagnetic communication and sensing. Here, we propose a quantum
sensor to sensitively detect the electric field of the millimeter (mm) wave.
The quantum sensor consists of many surface-state electrons trapped
individually on li... | 2304.05154v1 |
2023-06-09 | Ordering in SU(4)-symmetric model of AA bilayer graphene | We examine possible ordered states of AA stacked bilayer graphene arising due
to electron-electron coupling. We show that under certain assumptions the
Hamiltonian of the system possesses an SU(4) symmetry. The multicomponent order
parameter is described by a $4\times4$ matrix $\hat{Q}$, for which a mean-field
self-con... | 2306.05796v2 |
2023-06-28 | Chern insulating state with double-$Q$ ordering wave vectors at the Brillouin zone boundary | Magnetic multiple-$Q$ states consisting of multiple spin density waves are a
source of unconventional topological spin textures, such as skyrmion and
hedgehog. We theoretically investigate a topologically nontrivial double-$Q$
state with a net spin scalar chirality on a two-dimensional square lattice. We
find that a do... | 2306.15854v1 |
2008-04-17 | A study of the quantum classical crossover in the spin dynamics of the 2D S=5/2 antiferromagnet Rb2MnF4: neutron scattering, computer simulations, and analytic theories | We report comprehensive inelastic neutron scattering measurements of the
magnetic excitations in the 2D spin-5/2 Heisenberg antiferromagnet Rb2MnF4 as a
function of temperature from deep in the Neel ordered phase up to paramagnetic,
0.13 < kBT/4JS < 1.4. Well defined spin-waves are found for wave-vectors larger
than th... | 0804.2901v2 |
2001-01-05 | Comment on "Gravity Waves, Chaos, and Spinning Compact Binaries" | In this comment, I argue that chaotic effects in binary black hole inspiral
will not strongly impact the detection of gravitational waves from such
systems. | 0101024v1 |
2009-09-23 | Wave-particle duality and the Hamilton action | The Hamilton-Jacobi equation of relativistic quantum mechanics is revisited.
The equation is shown to permit solutions in the form of breathers
(oscillating/spinning solitons), displaying simultaneous particle-like and
wave-like behaviour. | 0909.4195v1 |
2014-10-21 | Electromagnetic space-time crystals. III. Dispersion relations for partial solutions | Partial solutions of the Dirac equation describing an electron motion in
electromagnetic crystals created by plane waves with linear and circular
polarizations are treated. It is shown that the electromagnetic crystal formed
by circularly polarized waves possesses the spin birefringence. | 1410.5536v1 |
2017-07-01 | Intrinsic translational symmetry breaking in a doped Mott insulator | A central issue of Mott physics, with symmetries being fully retained in the
spin background, concerns the charge excitation. In a two-leg spin ladder with
spin gap, an injected hole can exhibit either a Bloch wave or a density wave by
tuning the ladder anisotropy through a `quantum critical point' (QCP). The
nature of... | 1707.00068v2 |
2005-01-05 | Post-Newtonian accurate parametric solution to the dynamics of spinning compact binaries in eccentric orbits: The leading order spin-orbit interaction | We derive Keplerian-type parametrization for the solution of post-Newtonian
(PN) accurate conservative dynamics of spinning compact binaries moving in
eccentric orbits. The PN accurate dynamics that we consider consists of the
third post-Newtonian accurate conservative orbital dynamics influenced by the
leading order s... | 0501011v1 |
2008-04-02 | Spin-stiffness of anisotropic Heisenberg model on square lattice and possible mechanism for pinning of the electronic liquid crystal direction in YBCO | Using series expansions and spin-wave theory we calculate the spin-stiffness
anisotropy $\rho_{sx}/\rho_{sy}$ in Heisenberg models on the square lattice
with anisotropic couplings $J_x,J_y$. We find that for the weakly anisotropic
spin-half model ($J_x\approx J_y$), $\rho_{sx}/\rho_{sy}$ deviates
substantially from the... | 0804.0400v1 |
2008-08-12 | Renormalized 2PN spin contributions to the accumulated orbital phase for LISA sources | We give here a new third post-Newtonisn (3PN) spin-spin contribution (in the
PN parameter $\epsilon $) to the accumulated orbital phase of a compact binary,
arising from the spin-orbit precessional motion of the spins. In the equal mass
case this contribution vanishes, but LISA sources of merging supermassive
binary bl... | 0808.1704v2 |
2019-06-12 | Binary neutron star mergers: Effects of spin and post-merger dynamics | Spin can have significant effects on the electromagnetic transients
accompanying binary neutron star mergers. The measurement of spin can provide
important information about binary formation channels. In the absence of a
strong neutron star spin prior, the degeneracy of spin with other parameters
leads to significant u... | 1906.05288v2 |
2016-03-08 | Searching for Gravitational Waves from Compact Binaries with Precessing Spins | Current searches for gravitational waves from compact-object binaries with
the LIGO and Virgo observatories employ waveform models with spins aligned (or
anti-aligned) with the orbital angular momentum. Here, we derive a new
statistic to search for compact objects carrying generic (precessing) spins.
Applying this stat... | 1603.02444v2 |
2017-06-23 | Ferroic collinear multilayer magnon spin valve | Information transport and processing by pure magnonic spin currents in
insulators is a promising alternative to conventional charge-current driven
spintronic devices. The absence of Joule heating as well as the reduced spin
wave damping in insulating ferromagnets has been suggested to enable the
implementation of effic... | 1706.07592v1 |
2022-04-22 | Inducing spin-order with an impurity: phase diagram of the magnetic Bose polaron | We investigate the formation of magnetic Bose polaron, an impurity atom
dressed by spin-wave excitations, in a one-dimensional spinor Bose gas. In
terms of an effective potential model the impurity is strongly confined by the
host excitations which can even overcome the impurity-medium repulsion leading
to a self-local... | 2204.10960v1 |
2022-08-04 | Numerical-relativity surrogate modeling with nearly extremal black-hole spins | Numerical relativity (NR) simulations of binary black hole (BBH) systems
provide the most accurate gravitational wave predictions, but at a high
computational cost -- especially when the black holes have nearly extremal
spins (i.e. spins near the theoretical upper limit) or very unequal masses.
Recently, the technique ... | 2208.02927v1 |
2000-07-11 | Classifying Reported and "Missing" Resonances According to Their P and C Properties | The Hilbert space H^3q of the three quarks with one excited quark is
decomposed into Lorentz group representations. It is shown that the quantum
numbers of the reported and ``missing'' resonances fall apart and populate
distinct representations that differ by their parity or/and charge conjugation
properties. In this w... | 0007022v1 |
2012-06-26 | Resonant Compton Upscattering in High Field Neutron Stars | The extremely efficient process of resonant Compton upscattering by
relativistic electrons in high magnetic fields is believed to be a leading
emission mechanism of high field pulsars and magnetars in the production of
intense X-ray radiation. New analytic developments for the Compton scattering
cross section using Sok... | 1206.5957v1 |
2013-01-21 | Interatomic potentials, electric properties, and spectroscopy of the ground and excited states of the Rb_2 molecule: Ab initio calculations and effect of a non-resonant field | We formulate the theory for a diatomic molecule in a spatially degenerate
electronic state interacting with a non-resonant laser field and investigate
its rovibrational structure in the presence of the field. We report on
\textit{ab initio} calculations employing the double electron attachment
intermediate Hamiltonian ... | 1301.4966v2 |
2023-01-10 | Variable bandwidth, high efficiency microwave resonator for control of spin-qubits in nitrogen-vacancy centers | Nitrogen-Vacancy (NV) centers in diamond are attractive tools for sensing and
quantum information. Realization of this potential requires effective tools for
controlling the spin degree of freedom by microwave (mw) magnetic fields. In
this work we present a planar microwave resonator optimized for
microwave-optical dou... | 2301.03911v2 |
1999-10-21 | Effective action and collective modes in quasi-one-dimensional spin-density-wave systems | We derive the effective action describing the long-wavelength low-energy
collective modes of quasi-one-dimensional spin-density-wave (SDW) systems,
starting from the Hubbard model within weak coupling approximation. The
effective action for the spin-wave mode corresponds to an anisotropic
non-linear sigma model togethe... | 9910343v2 |
2005-02-09 | Weak ferromagnetism and spiral spin structures in honeycomb Hubbard planes | Within the Hartree Fock- RPA analysis, we derive the spin wave spectrum for
the weak ferromagnetic phase of the Hubbard model on the honeycomb lattice.
Assuming a uniform magnetization, the polar (optical) and acoustic branches of
the spin wave excitations are determined. The bipartite lattice geometry
produces a q-dep... | 0502249v2 |
2006-01-20 | Spin Structure Factor of the Frustrated Quantum Magnet Cs_2CuCl_4 | The ground state properties and neutron structure factor for the
two-dimensional antiferromagnet on the triangular lattice, with uni-directional
anisotropy in the nearest-neighbor exchange couplings and a weak
Dzyaloshinskii-Moriya (DM) interaction, are studied. This Hamiltonian has been
used to interpret neutron scatt... | 0601486v1 |
2006-09-04 | Magnetization reversal and nonexponential relaxation via instabilities of internal spin waves in nanomagnets | A magnetic particle with atomic spins ordered in an unstable direction is an
example of a false vacuum that decays via excitation of internal spin waves.
Coupled evolution of the particle's magnetization (or the vacuum state) and
spin waves, considered in the time-dependent vacuum frame, leads to a peculiar
relaxation ... | 0609074v2 |
2007-09-04 | Soft Spin Wave Near nu=1: Evidence for a Magnetic Instability in Skyrmion Systems | The ground state of the two dimensional electron gas near $\nu$=1 is
investigated by inelastic light scattering measurements carried down to very
low temperatures. Away from $\nu$=1, the ferromagnetic spin wave collapses and
a new low-energy spin wave emerges below the Zeeman gap. The emergent spin wave
shows soft beha... | 0709.0541v2 |
2009-03-24 | Nematicity as a route to a magnetic field-induced spin density wave order; application to the high temperature cuprates | The electronic nematic order characterized by broken rotational symmetry has
been suggested to play an important role in the phase diagram of the high
temperature cuprates. We study the interplay between the electronic nematic
order and a spin density wave order in the presence of a magnetic field. We
show that a coope... | 0903.3993v2 |
2009-10-03 | Non-collinear spin-spiral phase for the uniform electron gas within Reduced-Density-Matrix-Functional Theory | The non-collinear spin-spiral density wave of the uniform electron gas is
studied in the framework of Reduced-Density-Matrix-Functional Theory. For the
Hartree-Fock approximation, which can be obtained as a limiting case of
Reduced-Density-Matrix-Functional Theory, Overhauser showed a long time ago
that the paramagneti... | 0910.0534v1 |
2010-07-19 | Spin waves in zigzag graphene nanoribbons and the stability of edge ferromagnetism | We study the low energy spin excitations of zigzag graphene nanoribbons of
varying width. We find their energy dispersion at small wave vector to be
dominated by antiferromagnetic correlations between the ribbon's edges, in
accrodance with previous calculations. We point out that spin wave lifetimes
are very long due t... | 1007.3285v2 |
2011-02-17 | A-phase origin in B20 helimagnets | A-phase origin in cubic helimagnets ($M n S i,F e G e$ etc) is explained. It
is shown that its upper bound is a result of the spin-wave instability at
$H_\perp>\sqrt{8/3}\Delta=H_{A2}$ where $H_\perp$ are the magnetic field
perpendicular to the helix axis $\m k$ and $\Delta$ the spin-wave gap
respectively. The last app... | 1102.3524v1 |
2011-03-09 | Magnetization and magnon excitation energies of the magnetic semiconductors EuTe and EuO on the basis of the renormalized spin wave theory | We present analytic expressions for the temperature dependent magnetization
and magnon dispersion relation of the antiferromagnetic (AFM) EuTe and the
ferromagnetic (FM) EuO. These bulk semiconductors represent concentrated spin
systems for which the interaction between magnons has to be taken into account.
We do this ... | 1103.1831v1 |
2011-05-31 | Topological Entanglement Entropy of Z2 Spin liquids and Lattice Laughlin states | We study entanglement properties of candidate wave-functions for SU(2)
symmetric gapped spin liquids and Laughlin states. These wave-functions are
obtained by the Gutzwiller projection technique. Using Topological Entanglement
Entropy \gamma\ as a tool, we establish topological order in chiral spin liquid
and Z2 spin l... | 1106.0015v3 |
2011-07-11 | Coherent manipulation of spin wave vector for polarization of photons in an atomic ensemble | We experimentally demonstrate the manipulation of two-orthogonal components
of a spin wave in an atomic ensemble. Based on Raman two-photon transition and
Larmor spin precession induced by magnetic field pulses, the coherent rotations
between the two components of the spin wave is controllably achieved.
Successively, t... | 1107.1914v1 |
2013-04-22 | Magnetic anisotropic energy gap and low energy spin wave excitation in antiferromagnetic block phase of K2Fe4Se5 | Neutron scattering experiments were performed to investigate magnetic order
and magnetic excitations in ternary iron chalcogenide K2Fe4Se5. The formation
of a superlattice structure below 580 K together with the decoupling between
the Fe-vacancy order-disorder transition and the antiferromagnetic order
transition appea... | 1304.5950v1 |
2013-08-29 | Control of Propagating Spin Waves via Spin Transfer Torque in a Metallic Bilayer Waveguide | We investigate the effect of a direct current on propagating spin waves in a
CoFeB/Ta bilayer structure. Using the micro-Brillouin light scattering
technique, we observe that the spin wave amplitude may be attenuated or
amplified depending on the direction of the current and the applied magnetic
field. Our work suggest... | 1308.6357v2 |
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