publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
|---|---|---|---|
2020-12-07 | Nuclear magnetic resonance spectroscopy of nonequilibrium steady states in quantum dots | The optically induced polarization of localized electron spins in an ensemble
of quantum dots (QDs) dephases due to the interaction with the surrounding
nuclear spins. Despite this dephasing, the spins in the QDs can be controlled
to respond coherently by applying periodic laser pulses, leading to a revival
of the spin... | 2012.03607v2 |
2021-03-17 | Spin Resonance Amplitude and Frequency of a Single Atom on a Surface in a Vector Magnetic Field | We used electron spin resonance (ESR) combined with scanning tunneling
microscopy (STM) to measure hydrogenated Ti (spin-1/2) atoms at low-symmetry
binding sites on MgO in vector magnetic fields. We found strongly anisotropic
g-values in all three spatial directions. Interestingly, the amplitude and
lineshape of the ES... | 2103.09582v1 |
2021-05-24 | Spin pumping of two-dimensional electron gas with Rashba and Dresselhaus spin-orbit interactions | We theoretically consider spin pumping in a junction between a ferromagnetic
insulator (FI) and a two-dimensional electron gas (2DEG) in which the Rashba
and Dresselhaus spin-orbit interactions coexist. Using second-order
perturbation theory, we derive an increase in linewidth in the case of an
interfacial exchange cou... | 2105.11193v3 |
2021-05-26 | Coupling spin defects in hexagonal boron nitride to monolithic bullseye cavities | Color centers in hexagonal boron nitride (hBN) are becoming an increasingly
important building block for quantum photonic applications. Herein, we
demonstrate the efficient coupling of recently discovered spin defects in hBN
to purposely designed bullseye cavities. We show that the all monolithic hBN
cavity system exhi... | 2105.12317v1 |
2022-01-05 | Electrical readout microwave-free sensing with diamond | While nitrogen-vacancy (NV-) centers have been extensively investigated in
the context of spin-based quantum technologies, the spin-state readout is
conventionally performed optically, which may limit miniaturization and
scalability. Here, we report photoelectric readout of ground-state
cross-relaxation features, which... | 2201.01801v1 |
2022-01-18 | Terahertz electron paramagnetic resonance generalized spectroscopic ellipsometry: The magnetic response of the nitrogen defect in 4H-SiC | We report on terahertz (THz) electron paramagnetic resonance generalized
spectroscopic ellipsometry (THz-EPR-GSE). Measurements of the field and
frequency dependencies of the magnetic response due to the spin transitions
associated with the nitrogen defect in 4H-SiC are shown as an example.
THz-EPR-GSE dispenses with t... | 2201.06695v1 |
2022-03-31 | Fully tunable longitudinal spin-photon interactions in Si and Ge quantum dots | Spin qubits in silicon and germanium quantum dots are promising platforms for
quantum computing, but entangling spin qubits over micrometer distances remains
a critical challenge. Current prototypical architectures maximize transversal
interactions between qubits and microwave resonators, where the spin state is
flippe... | 2203.17163v1 |
2022-07-21 | Influence of nonuniform magnetization reorientation on spin-orbit torque measurements | Measurements of spin-orbit torques in a ferromagnetic/nonmagnetic multilayer
are typically based on an assumption that the entire ferromagnetic layer
uniformly responds to the spin-orbit torque. This assumption breaks down when
the thickness of the ferromagnetic layer is comparable to the dynamic exchange
coupling leng... | 2207.10349v1 |
2022-10-10 | Strong coupling of a Gd$^{3+}$ multilevel spin system to an on-chip superconducting resonator | We report the realization of a strong coupling between a Gd$^{3+}$ spin
ensemble hosted in a scheelite (CaWO$_4$) single crystal and the resonant mode
of a coplanar stripline superconducting cavity leading to a large separation of
spin-photon states of 146 MHz. The interaction is well described by the Dicke
model and t... | 2210.05053v2 |
2023-06-21 | Room temperature optically detected magnetic resonance of single spins in GaN | Optically detected magnetic resonance (ODMR) is an efficient mechanism to
readout the spin of solid-state color centers at room temperature, thus
enabling spin-based quantum sensors of magnetic field, electric field, and
temperature with high sensitivity and broad commercial applicability. The
mechanism of room tempera... | 2306.12337v1 |
2023-10-25 | Two-qubit logic between distant spins in silicon | Direct interactions between quantum particles naturally fall off with
distance. For future-proof qubit architectures, however, it is important to
avail of interaction mechanisms on different length scales. In this work, we
utilize a superconducting resonator to facilitate a coherent interaction
between two semiconducto... | 2310.16805v1 |
2023-11-14 | Temperature Dependence of Spin Pumping in Ni81Fe19/NbN Bilayer Thin Films | We present a comprehensive study of broadband spin pumping utilizing the
inverse spin Hall effect phenomena in bilayer samples comprising Ni81Fe19 (15
nm) and NbN (with NbN thickness varying from 20 nm to 140 nm), conducted over a
temperature and frequency range spanning from 300 K to 4 K and 2 GHz to 12 GHz,
respectiv... | 2311.08257v1 |
2024-02-02 | Theory of acoustic-phonon involved exciton spin flip in perovskite semiconductors | We present a theory of the acoustic phonon assisted spin-flip Raman
scattering (SFRS), or resonant photoluminescence with the spin flip of a
photoexcited exciton localized in a bulk cubic-phase perovskite semiconductor.
We consider the spin-flip transitions between the ground-state exciton spin
sublevels in external ma... | 2402.01556v1 |
2007-12-31 | Spin dynamics and spin freezing behavior in the two-dimensional antiferromagnet NiGa$_{2}$S$_{4}$ revealed by Ga-NMR, NQR and $μ$SR measurements | We have performed $^{69,71}$Ga nuclear magnetic resonance (NMR) and nuclear
quadrupole resonance (NQR) and muon spin rotation/resonance on the quasi
two-dimensional antiferromagnet (AFM) NiGa$_2$S$_4$, in order to investigate
its spin dynamics and magnetic state at low temperatures. Although there exists
only one cryst... | 0801.0190v1 |
2007-01-04 | Spin-modulated quasi-1D antiferromagnet LiCuVO_4 | We report on magnetic resonance studies within the magnetically ordered phase
of the quasi-1D antiferromagnet LiCuVO_4. Our studies reveal a spin
reorientational transition at a magnetic field H_c1 ~ 25 kOe applied within the
crystallographical (ab)-plane in addition to the recently observed one at H_c2
\~75 kOe [ M.G.... | 0701083v1 |
2009-07-21 | Normal-State Spin Dynamics and Temperature-Dependent Spin Resonance Energy in an Optimally Doped Iron Arsenide Superconductor | The proximity of superconductivity and antiferromagnetism in the phase
diagram of iron arsenides, the apparently weak electron-phonon coupling and the
"resonance peak" in the superconducting spin excitation spectrum have fostered
the hypothesis of magnetically mediated Cooper pairing. However, since most
theories of su... | 0907.3632v1 |
2012-07-07 | Analytical description of spin-Rabi oscillation controlled electronic transitions rates between weakly coupled pairs of paramagnetic states with S=1/2 | We report on an analytical description of spin-dependent electronic
transition rates which are controlled by a radiation induced spin-Rabi
oscillation of weakly spin-exchange and spin-dipolar coupled paramagnetic
states (S=1/2). The oscillation components (the Fourier content) of the net
transition rates within spin-pa... | 1207.1754v1 |
2016-08-29 | Resonant optical spectroscopy and coherent control of Cr4+ spin ensembles in SiC and GaN | Spins bound to point defects are increasingly viewed as an important resource
for solid-state implementations of quantum information technologies. In
particular, there is a growing interest in the identification of new classes of
defect spin that can be controlled optically. Here we demonstrate ensemble
optical spin po... | 1608.08255v1 |
2018-10-13 | Dynamics of spin-orbit-coupled cold atomic gases in a Floquet lattice with an impurity | In this study, we have studied the quantum tunneling of a single
spin-orbit-coupled atom held in a periodically modulated optical lattice with
an impurity. At the pseudocollapse points of quasienergy bands, where the
dynamical localization takes place globally, two types of local second-order
tunneling processes appear... | 1810.05854v1 |
2018-02-09 | A T-shaped double quantum dot system as a Fano interferometer: interplay of coherence and correlation upon spin currents | Based on Keldysh non-equilibrium Green function method, we have investigated
spin current production in a hybrid T-shaped device, consisting of a central
quantum dot connected to the leads and a side dot which only couples to the
central dot. The topology of this structure allows for quantum interference of
the differe... | 1802.03439v1 |
2017-02-07 | Resonant spin transfer torque nano-oscillators | Spin transfer torque nano-oscillators are potential candidates for replacing
the traditional inductor based voltage controlled oscillators in modern
communication devices. Typical oscillator designs are based on trilayer
magnetic tunnel junctions which are disadvantaged by low power outputs and poor
conversion efficien... | 1702.01869v1 |
2021-10-04 | Separation of Artifacts from Spin-Torque Ferromagnetic Resonance Measurements of Spin-Orbit Torque for the Low-Symmetry van der Waals Semi-Metal ZrTe$_\textbf{3}$ | We measure spin-orbit torque generated by exfoliated layers of the
low-symmetry semi-metal ZrTe$_3$ using the spin-torque ferromagnetic resonance
(ST-FMR) technique. When the ZrTe$_3$ has a thickness greater than about 10 nm,
artifacts due to spin pumping and/or resonant heating can cause the standard
ST-FMR analysis t... | 2110.01720v2 |
2019-07-17 | Spin Measurements of NV Centers Coupled to a Photonic Crystal Cavity | Nitrogen-vacancy (NV) centers feature outstanding properties like a spin
coherence time of up to one second as well as a level structure offering the
possibility to initialize, coherently manipulate and optically read-out the
spin degree of freedom of the ground state. However, only about three percent
of their photon ... | 1907.07602v1 |
2019-08-28 | Tilting Ice Giants with a Spin-Orbit Resonance | Giant collisions can account for Uranus's and Neptune's large obliquities,
yet generating two planets with widely different tilts and strikingly similar
spin rates is a low-probability event. Trapping into a secular spin-orbit
resonance, a coupling between spin and orbit precession frequencies, is a
promising alternati... | 1908.10969v4 |
2021-07-20 | Magnetic topology in coupled binaries, spin-orbital resonances, and flares | We consider topological configurations of the magnetically coupled spinning
stellar binaries (e.g., merging neutron stars or interacting star-planet
systems). We discuss conditions when the stellar spins and the orbital motion
nearly `compensate' each other, leading to very {\it slow} overall winding of
the coupled mag... | 2107.09702v3 |
2021-07-30 | Coherent control of electron spin qubits in silicon using a global field | Silicon spin qubits promise to leverage the extraordinary progress in silicon
nanoelectronic device fabrication over the past half century to deliver
large-scale quantum processors. Despite the scalability advantage of using
silicon technology, realising a quantum computer with the millions of qubits
required to run so... | 2107.14622v2 |
2021-09-07 | Exploring tidal obliquity variations with SMERCURY-T | We introduce our new code, SMERCURY-T, which is based on existing codes
SMERCURY (Lissauer et al. 2012) and Mercury-T (Bolmont et al. 2015). The result
is a mixed-variable symplectic N-body integrator that can compute the orbital
and spin evolution of a planet within a multi-planet system under the influence
of tidal s... | 2109.03347v1 |
2022-04-12 | Spinsim: a GPU optimized python package for simulating spin-half and spin-one quantum systems | The Spinsim python package simulates spin-half and spin-one quantum
mechanical systems following a time dependent Shroedinger equation. It makes
use of numba.cuda, which is an LLVM (Low Level Virtual Machine) compiler for
Nvidia Cuda compatible systems using GPU parallelization. Along with other
optimizations, this all... | 2204.05586v1 |
2022-07-04 | Long-distance coupling of spin qubits via topological magnons | We consider two distant spin qubits in quantum dots, both coupled to a
two-dimensional topological ferromagnet hosting chiral magnon edge states at
the boundary. The chiral magnon is used to mediate entanglement between the
spin qubits, realizing a fundamental building block of scalable quantum
computing architectures:... | 2207.01264v1 |
2023-12-21 | Electric dipole spin resonance in single and two electron quantum dot defined in two-dimensional electron gas at the SrTiO$_3$/LaAlO$_3$ interface | We investigate the energy spectrum of a single and two electron quantum dot
(QD) embedded in two dimensional electron gas at the interface between
SrTiO$_3$ and LaAlO$_3$, in the presence of the external magnetic field. For
this purpose the three band model of $3d$-electrons defined on the square
lattice of Ti ions was... | 2312.13862v2 |
2019-12-05 | Ion Scale Electromagnetic Waves in the Inner Heliosphere | Understanding the physical processes in the solar wind and corona which
actively contribute to heating, acceleration, and dissipation is a primary
objective of NASA's Parker Solar Probe (PSP) mission. Observations of coherent
electromagnetic waves at ion scales suggests that linear cyclotron resonance
and non-linear pr... | 1912.02361v1 |
2004-06-03 | Phase diagram of the half-filled two-dimensional SU(N) Hubbard-Heisenberg model: a quantum Monte Carlo study | We investigate the phase diagram of the half-filled SU(N) Hubbard-Heisenberg
model with hopping t, exchange J and Hubbard U, on a square lattice. In the
large-N limit, and as a function of decreasing values of t/J, the model shows a
transition from a d-density wave state to a spin dimerized insulator. A similar
behavio... | 0406074v1 |
1995-08-04 | The spin of the nucleon in its rest system | The spin dependent structure functions, g$_{1p}$ of the proton and g$_{1n}$
of the neutron, calculated in the nucleon rest frame using a relativistic quark
model wave function, are compared with recent experiments. | 9508228v1 |
2009-04-10 | Template banks to search for compact binaries with spinning components in gravitational wave data | Gravitational waves from coalescing compact binaries are one of the most
promising sources for detectors such as LIGO, Virgo and GEO600. If the
components of the binary posess significant angular momentum (spin), as is
likely to be the case if one component is a black hole, spin-induced precession
of a binary's orbital... | 0904.1715v1 |
2019-05-06 | Direct Visualization of Spatial inhomogeneity of Spin Stripes Order in La1.72Sr0.28NiO4 | In several strongly correlated electron systems, defects, charge and local
lattice distortions are found to show complex inhomogeneous spatial
distributions. There is growing evidence that such inhomogeneity plays a
fundamental role in unique functionality of quantum complex materials.
La1.72Sr0.28NiO4 is a prototypica... | 1905.02124v2 |
2017-03-14 | Waveform measurement of charge- and spin-density wave packets in a Tomonaga-Luttinger liquid | In contrast to a free electron system, a Tomonaga-Luttinger (TL) liquid in a
one dimensional (1D) electron system hosts charge and spin excitations as
independent entities. When an electron wave packet is injected into a TL
liquid, it transforms into wave packets carrying either charge or spin that
propagate at differe... | 1703.04833v1 |
2019-07-17 | Neutron Scattering Study of Magnetic Anisotropy in a Tetragonal Antiferromagnet Bi$_2$CuO$_4$ | We present a comprehensive study of magnon excitations in the tetragonal
easy-plane anti-ferromagnet Bi$_2$CuO$_4$ using inelastic neutron scattering
and spin wave analyses. The nature of low energy magnons, and hence the
anisotropy in this material, has been controversial. We show unambiguously that
the low energy mag... | 1907.07784v2 |
2016-04-27 | Slow waves in locally resonant metamaterials line defect waveguides | In the past decades, many efforts have been devoted to the temporal
manipulation of waves, especially focusing on slowing down their propagation.
In electromagnetism, from microwave to optics, as well as in acoustics or for
elastic waves, slow wave propagation indeed largely benefits both applied and
fundamental physic... | 1604.08117v2 |
2003-05-30 | The Secular Evolution of the Primordial Kuiper Belt | A model that computes the secular evolution of a gravitating disk-planet
system is developed. The disk is treated as a set of gravitating rings, with
the rings'/planets' time-evolution governed by the classical Laplace-Lagrange
solution for secular evolution but modified to account for the disk's finite
thickness h. Th... | 0305602v1 |
2006-01-23 | Small divisor problem in the theory of three-dimensional water gravity waves | We consider doubly-periodic travelling waves at the surface of an infinitely
deep perfect fluid, only subjected to gravity $g$ and resulting from the
nonlinear interaction of two simply periodic travelling waves making an angle
$2\theta $ between them. \newline Denoting by $\mu =gL/c^{2}$ the dimensionless
bifurcation ... | 0601551v1 |
2017-07-17 | The First Ionization Potential Effect from the Ponderomotive Force: On the Polarization and Coronal Origin of the Alfven Waves | We investigate in more detail the origin of chromospheric Alfven waves that
give rise to the separation of ions and neutrals, the First Ionization
Potential Effect (FIP), through the action of the ponderomotive force. In open
field regions, we model the dependence of fractionation on the plasma upflow
velocity through ... | 1707.05378v1 |
2020-02-21 | Quasi-periodic traveling gravity-capillary waves | We present a numerical study of spatially quasi-periodic traveling waves on
the surface of an ideal fluid of infinite depth. This is a generalization of
the classic Wilton ripple problem to the case when the ratio of wave numbers
satisfying the dispersion relation is irrational. We propose a conformal
mapping formulati... | 2002.09487v2 |
2022-07-17 | Phase convergence and crest enhancement of modulated wave trains | The Akhmediev breather (AB) solution of the nonlinear Schr$\"{o}$dinger
equation (NLSE) shows that the maximum crest height of modulated wave trains
reaches triple the initial amplitude as a consequence of nonlinear long-term
evolution. Several fully nonlinear numerical studies have indicated that the
amplification can... | 2207.08176v1 |
2023-03-02 | Internal gravity waves in stratified flows with and without vortical modes | The comprehension of stratified flows is important for geophysical and
astrophysical applications. The Weak Wave Turbulence theory aims to provide a
statistical description of internal gravity waves propagating in the bulk of
such flows. However, internal gravity waves are usually perturbed by other
structures present ... | 2303.01570v3 |
2024-03-22 | Generation of narrow beams of super high-energy gamma quanta in the resonant inverse Compton-effect in the field of a strong x-ray wave | The article presents a theoretical study of Oleinik resonances in the process
of scattering a gamma quantum by an ultrarelativistic electron in the field of
a strong electromagnetic wave. It is shown that under resonant conditions, the
scattering channels of the reaction effectively split into two first-order
processes... | 2403.15519v2 |
2020-03-11 | Phase mixing and wave heating in a complex coronal plasma | Aims. We investigate the formation of small scales and the dissipation of MHD
wave energy through non-linear interactions of counter-propagating, phase-mixed
Alfvenic waves in a complex magnetic field. Methods. We conducted fully 3-D,
non-ideal MHD simulations of transverse waves in complex magnetic fields.
Continuous ... | 2003.05226v1 |
2004-10-19 | MHD tidal waves on a spinning magnetic compact star | In an X-ray binary system, the companion star feeds the compact neutron star
with plasma materials via accretions. The spinning neutron star is likely
covered with a thin "magnetized ocean" and may support {\it magnetohydrodynamic
(MHD) tidal waves}. While modulating the thermal properties of the ocean, MHD
tidal waves... | 0410428v1 |
2002-06-04 | Delocalization and spin-wave dynamics in ferromagnetic chains with long-range correlated random exchange | We study the one-dimensional quantum Heisenberg ferromagnet with exchange
couplings exhibiting long-range correlated disorder with power spectrum
proportional to $1/k^{\alpha}$, where $k$ is the wave-vector of the modulations
on the random coupling landscape. By using renormalization group, integration
of the equations... | 0206038v1 |
1999-05-15 | Electromagnetic radiation of the travelling spin wave propagating in an antiferromagnetic plate. Exact solution | The exact solution of radiation problem of a spin wave travelling in an
antiferromagnetic (AFM) plate was found. The spin wave with in-plane
oscillations of antiferromagnetism vector was considered. In this case the
magnetization vector is oscillating being perpendicular to the AFM plate and
depends on time and plane c... | 9905036v1 |
2009-12-03 | Partial-wave contributions to pairing in nuclei | We present a detailed study of partial-wave contributions of nuclear forces
to pairing in nuclei. For T=1, J=0 pairing, partial waves beyond the standard
1S0 channel play an interesting role for the pair formation in nuclei. The
additional contributions are dominated by the repulsive 3P1 partial wave. Their
effects, an... | 0912.0697v1 |
2012-08-13 | Ground state of spin-1 Bose-Einstein condensates with spin-orbit coupling in a Zeeman field | We systematically investigate the weakly trapped spin-1 Bose-Einstein
condensates with spin-orbit coupling in an external Zeeman field. We find that
the mean-field ground state favors either a magnetized standing wave phase or
plane wave phase when the strength of Zeeman field is below a critical value
related to the s... | 1208.2514v1 |
2013-08-23 | Impact of eddy currents on the dispersion relation of surface spin waves in thin conducting magnetic films | We propose a rigorous solution to a long-standing problem of the impact of
eddy currents on the dispersion relation of surface spin waves propagating in
thin conducting magnetic films. Our results confirm the prediction of the
Almeida-Mill's exchange-free theory that the inclusion of the eddy current
contribution resul... | 1308.5040v1 |
2016-06-09 | Snell's Law for Spin Waves | We report the experimental observation of Snell's law for magneto-static spin
waves in thin ferromagnetic Permalloy films by imaging incident, refracted and
reflected waves. We use a thickness step as the interface between two media
with different dispersion relation. Since the dispersion relation for
magneto-static wa... | 1606.02895v1 |
2016-10-27 | Observation of Self-Cavitating Envelope Dispersive Shock Waves in Yttrium Iron Garnet Thin Films | The formation and properties of envelope dispersive shock wave (DSW)
excitations from repulsive nonlinear waves in a magnetic film are studied.
Experiments involve the excitation of a spin-wave step pulse in a low-loss
magnetic Y$_3$Fe$_5$O$_{12}$ thin film strip, in which the spin-wave amplitude
increases rapidly, rea... | 1610.08846v3 |
2022-11-21 | Spin Hall effect of radiofrequency waves in magnetized plasmas | In inhomogeneous media, electromagnetic-wave rays deviate from the
trajectories predicted by the leading-order geometrical optics. This effect,
called the spin Hall effect of light, is typically neglected in ray-tracing
codes used for modeling waves in plasmas. Here, we demonstrate that the spin
Hall effect can be sign... | 2211.11705v5 |
2022-12-19 | Confined phase singularities reveal the spin-to-orbital angular momentum conversion of sound waves | We identify an acoustic process in which the conversion of angular momentum
between its spin and orbital form takes place. The interaction between an
evanescent wave propagating at the interface of two immiscible fluids and an
isolated droplet is considered. The elliptical motion of the fluid supporting
the incident wa... | 2212.09439v2 |
2023-01-03 | Caustic spin wave beams in soft, thin films: properties and classification | In the context of wave propagation, caustics are usually defined as the
envelope of a finite-extent wavefront; folds and cusps in a caustic result in
enhanced wave amplitudes. Here, we tackle a related phenomenon, namely the
existence of well-defined beams originating solely from the geometric
properties of the corresp... | 2301.01220v1 |
2021-12-30 | Topological materials for full-vector elastic waves | Elastic wave manipulation is important in a wide variety of scales in
applications including information processing in tiny elastic devices and noise
control in big solid structures. The recent emergence of topological materials
opens a new avenue toward modulating elastic waves in solids. However, because
of the full-... | 2201.04950v1 |
2006-11-21 | Exceptional and non-exceptional contributions to the radiative πdecay | We have studied the spin-one resonance dominated form factors governing the
radiative decay of the \pi, within the framework of resonance chiral theory. We
obtain predictions for their value at zero momentum transfer and also a
description of their q^2 dependence. | 0611282v1 |
2004-01-12 | Giant dipole resonance with exact treatment of thermal fluctuations | The shape fluctuations due to thermal effects in the giant dipole resonance
(GDR) observables are calculated using the exact free energies evaluated at
fixed spin and temperature. The results obtained are compared with Landau
theory calculations done by parameterizing the free energy. The Landau theory
is found to be i... | 0401020v1 |
1997-04-07 | A Greenberger-Horne-Zeilinger experiment for mixed states | This paper shows how the Greenberger-Horne-Zeilinger experiment, which
demonstrates the nonlocal nature of quantum mechanics, can be performed using
nuclear magnetic resonance on spins in molecules at finite temperature. The use
of nuclear magnetic resonance techniques allows the experiment to uncover the
nonlocality n... | 9704013v1 |
2000-03-18 | A Magnetic Resonance Force Microscopy Quantum Computer with Tellurium Donors in Silicon | We propose a magnetic resonance force microscopy (MRFM)-based nuclear spin
quantum computer using tellurium impurities in silicon. This approach to
quantum computing combines the well-developed silicon technology with expected
advances in MRFM. | 0003076v1 |
2010-02-28 | Deflagration with quantum and dipolar effects in a model of a molecular magnet | Combination of the thermal effet in magnetic deflagration with resonance spin
tunneling controlled by the dipole-dipole interaction in molecular magnets
leads to the increase of the deflagration speed in the dipolar window near
tunneling resonances. | 1003.0208v1 |
2012-08-05 | Bottomonium and Bottomonium-like States and Decays at Belle | Recent results from the Belle experiment are presented. We report the results
of the first observation of P-wave spin-singlet Bottomonium states, observation
of two charged Bottomonium-like resonances and the first observation of the
radiative transition hb(1P)\rightarrow{\eta}b(1S){\gamma} at the Y(5S)
resonance regio... | 1208.1050v1 |
2012-10-01 | A Quantum Mechanical Review of Magnetic Resonance Imaging | In this paper, we review the quantum mechanics of magnetic resonance imaging
(MRI). We traverse its hierarchy of scales from the spin and orbital angular
momentum of subatomic particles to the ensemble magnetization of tissue. And we
review a number of modalities used in the assessment of acute ischemic stroke
and trau... | 1210.0946v1 |
2015-05-18 | Magnetic Resonance Lithography with Nanometer Resolution | We propose an approach for super-resolution optical lithography which is
based on the inverse of magnetic resonance imaging (MRI). The technique uses
atomic coherence in an ensemble of spin systems whose final state population
can be optically detected. In principle, our method is capable of producing
arbitrary one and... | 1505.04496v1 |
2012-09-28 | Feshbach resonance: a one dimensional example | We present a simple one-dimensional example of a spin 1/2 particle submitted
to a delta-type potential which interacs differently with the two components of
the wavefunction and to an external magnetic field. It has two coupled
channels, admits a closed solution and features the Feshbach resonance
phenomenon by proper ... | 1209.6441v1 |
1997-06-27 | High-field Electron Spin Resonance of Cu_{1-x}Zn_{x}GeO_{3} | High-Field Electron Spin Resonance measurements were made on powder samples
of Cu_{1-x}Zn_{x}GeO_{3} (x=0.00, 0.01, 0.02, 0.03 and 0.05) at different
frequencies (95, 110, 190, 220, 330 and 440 GHz) at low temperatures. The
spectra of the doped samples show resonances whose positions are dependent on
Zn concentration, ... | 9706286v1 |
1998-06-28 | Magnetic Resonance of the Intrinsic Defects of the Spin-Peierls Magnet CuGeO3 | ESR of the pure monocrystals of CuGeO3 is studied in the frequency range 9-75
GHz and in the temperature interval 1.2-25 K. The splitting of the ESR line
into several spectral components is observed below 5 K, in the temperature
range where the magnetic susceptibility is suppressed by the spin-Peierls
dimerization. The... | 9806347v2 |
2000-02-18 | Coupling to spin fluctuations from conductivity scattering rates | A recent analysis of optical conductivity data which has provided strong
evidence for coupling of the charge carriers to the 41 meV spin resonance, seen
in the superconducting state of optimally doped Y123, is extended to other
systems. We find that the corresponding spin resonance is considerably broader
in Tl2201 and... | 0002283v2 |
2000-10-04 | The Resonance Peak in Sr$_2$RuO$_4$: Signature of Spin Triplet Pairing | We study the dynamical spin susceptibility, $\chi({\bf q}, \omega)$, in the
normal and superconducting state of Sr$_2$RuO$_4$. In the normal state, we find
a peak in the vicinity of ${\bf Q}_i\simeq (0.72\pi,0.72\pi)$ in agreement with
recent inelastic neutron scattering (INS) experiments. We predict that for spin
trip... | 0010067v2 |
2004-02-11 | Dispersion Anomalies in Cuprate Superconductors | We argue that the shape of the dispersion along the nodal and antinodal
directions in the cuprates can be understood as a consequence of the
interaction of the electrons with collective spin excitations. In the normal
state, the dispersion displays a crossover at an energy where the decay into
spin fluctuations becomes... | 0402304v1 |
2004-11-24 | Effect of spin-orbit coupling on zero-conductance resonances in asymmetrically coupled one-dimensional rings | The influence of Rashba spin-orbit coupling on zero conductance resonances
appearing in one dimensional ring asymmetrically coupled to two leads is
investigated. For this purpose, the transmission function of the corresponding
one-electron scattering problem is derived analytically and analyzed in the
complex energy pl... | 0411620v2 |
2006-01-31 | Spin-lattice interaction in the quasi one-dimensional helimagnet LiCu_2O_2 | The field dependence of the electron spin resonance in a helimagnet,
LiCu_2O_2, was investigated for the first time. In the paramagnetic state a
broad resonance line was observed corresponding to a g-factor of 2.3. In the
critical regime around the paramagnetic to helimagnetic phase transition the
resonance broadens an... | 0601701v1 |
2006-10-02 | g-Factor Tuning and Manipulation of Spins by an Electric Current | We investigate the Zeeman splitting of two-dimensional electrons in an
asymmetric silicon quantum well, by electron-spin-resonance (ESR) experiments.
Applying a small dc current we observe a shift in the resonance field due to
the additional current-induced Bychkov-Rashba (BR) type of spin-orbit (SO)
field. This findin... | 0610046v1 |
1996-04-09 | Effects Of The Quantity $σ_{TS}$ On The Spin Structure Functions Of Nucleons In The Resonance Region | In this paper, we investigate the effects of the quantity $\sigma_{TS}$ on
the spin-structure functions of nucleons in the resonance region. The Schwinger
sum rule for the spin structure function $g_2(x,Q^2)$ at the real photon limit
is derived for the nucleon treated as a composite system, and it provides a
crucial co... | 9604274v1 |
2001-11-21 | Measurement of parity-nonconserving rotation of neutron spin in the 0.734-eV p-wave resonance of $^{139}La$ | The parity nonconserving spin rotation of neutrons in the 0.734-eV p-wave
resonance of $^{139}La$ was measured with the neutron transmission method. Two
optically polarized $^3He$ cells were used before and behind a a 5-cm long
$^{139}La$ target as a polarizer and an analyzer of neutron spin. The rotation
angle was car... | 0111018v1 |
2007-05-24 | Separation of Bell states | The four Bell states can be represented by separable coherent states which
are products of individual non-hermitian spin operators. In the absence of
interactions, the non-hermitian states are predicted to form a new quantum
state of spin magnitude 1/sqrt(2) rather than 1/2. Properties of these states
show that an isol... | 0705.3657v5 |
2009-08-21 | High precision beam momentum determination in a synchrotron using a spin resonance method | In order to measure the mass of the eta meson with high accuracy using the
d+p -> 3He+eta reaction, the momentum of the circulating deuteron beam in the
Cooler Synchrotron COSY of the Forschungszentrum Juelich has to be determined
with unprecedented precision. This has been achieved by studying the spin
dynamics of the... | 0908.3103v2 |
2010-04-06 | Electron spin resonance in S=1/2 antiferromagnets at high temperature | We study the electron spin resonance (ESR) of low-dimensional spin systems at
high temperature, and test the Kubo-Tomita theory of exchange narrowing. In
finite-size systems (molecular magnets), we found a double-peak resonance which
strongly differs from the usual Lorentzian. For infinite systems, we have
predictions ... | 1004.0839v1 |
2010-08-19 | Decay of Rabi oscillations induced by magnetic dipole interactions in diluted paramagnetic solids | Decay of Rabi oscillations of equivalent spins diluted in diamagnetic solid
matrix and coupled by magnetic dipole interactions is studied. It is shown that
these interactions result in random shifts of spin transient nutation
frequencies and thus lead to the decay of the transient signal. Averaging over
random spatial ... | 1008.3337v1 |
2010-09-27 | Multicolored quantum dimer models, resonating valence-bond states, color visons, and the triangular-lattice t_2g spin-orbital system | The spin-orbital model for triply degenerate t_2g electrons on a triangular
lattice has been shown to be dominated by dimers: the phase diagram contains
both strongly resonating, compound spin-orbital dimer states and quasi-static,
spin-singlet valence-bond (VB) states. To elucidate the nature of the true
ground state ... | 1009.5140v1 |
2010-11-26 | Modes of magnetic resonance of S=1 dimer chain compound NTENP | The spin dynamics of a quasi one dimensional $S=1$ bond alternating spin-gap
antiferromagnet Ni(C$_9$H$_{24}$N$_4$)NO$_2$(ClO$_4$) (abbreviated as NTENP) is
studied by means of electron spin resonance (ESR) technique. Five modes of ESR
transitions are observed and identified: transitions between singlet ground
state an... | 1011.5742v1 |
2011-05-11 | Spin-Orbit Coupled Fermi Gases across a Feshbach Resonance | In this letter we study both ground state properties and the superfluid
transition temperature of a spin-1/2 Fermi gas across a Feshbach resonance with
a synthetic spin-orbit coupling, using mean-field theory and exact solution of
two-body problem. We show that a strong spin-orbit coupling can significantly
enhance the... | 1105.2250v3 |
2011-08-23 | Resonant X-Ray Diffraction Study of Strongly Spin-Orbit-Coupled Mott Insulator CaIrO3 | We performed resonant x-ray diffraction experiments at the $L$ absorption
edges for the post-perovskite-type compound CaIrO$_{3}$ with $(t_{2g})^5$
electronic configuration. By observing the magnetic signals, we could clearly
see that the magnetic structure was a striped order with an antiferromagnetic
moment along the... | 1108.4523v1 |
2011-10-25 | Dynamic nuclear spin polarization in resonant laser spectroscopy of a quantum dot | Resonant optical excitation of lowest-energy excitonic transitions in
self-assembled quantum dots lead to nuclear spin polarization that is
qualitatively different from the well known optical orientation phenomena. By
carrying out a comprehensive set of experiments, we demonstrate that nuclear
spin polarization manifes... | 1110.5524v1 |
2012-07-12 | Medium effects close to s- and p-wave Feshbach resonances in atomic Fermi gases | Many-body effects may influence properties, such as scattering parameters,
nature of pairing, etc., close to a Feshbach resonance in the fermion BEC-BCS
crossover problem. We study effects such as these using a tractable
crossing-symmetric approach. This method allow us to include quantum
fluctuations, such as, density... | 1207.2856v1 |
2012-08-02 | Generating entanglement with low Q-factor microcavities | We propose a method of generating entanglement using single photons and
electron spins in the regime of resonance scattering. The technique involves
matching the spontaneous emission rate of the spin dipole transition in bulk
dielectric to the modified rate of spontaneous emission of the dipole coupled
to the fundament... | 1208.0455v1 |
2012-12-17 | Heavy-quark spin symmetry for charmed and strange baryon resonances | We study charmed and strange baryon resonances that are generated dynamically
by a unitary baryon-meson coupled-channels model which incorporates heavy-quark
spin symmetry. This is accomplished by extending the SU(3) Weinberg-Tomozawa
chiral Lagrangian to SU(8) spin-flavor symmetry plus a suitable symmetry
breaking. Th... | 1212.3943v2 |
2013-01-30 | Influence of MgO tunnel barrier thickness on spin-transfer ferromagnetic resonance and torque in magnetic tunnel junctions | Spin-transfer ferromagnetic resonance (ST-FMR) in symmetric magnetic tunnel
junctions (MTJs) with a varied thickness of the MgO tunnel barrier (0.75 nm <
$t_{MgO}$ < 1.05 nm) is studied using the spin-torque diode effect. The
application of an RF current into nanosized MTJs generates a DC mixing voltage
across the devi... | 1301.7186v1 |
2013-02-04 | Many-body \textit{T}-matrix theory of a strongly interacting spin-orbit coupled Fermi gas: Momentum-resolved radio-frequency spectroscopy and fermionic pairing | Interacting Fermi gases with spin-orbit coupling are responsible for many
intriguing phenomena such as topological superfluids and Majorana fermions.
Here we characterize theoretically fermionic pairing in a strongly interacting
spin-orbit coupled Fermi gas, by using momentum-resolved radio-frequency
spectroscopy. We d... | 1302.0559v2 |
2013-07-03 | ESR of the quasi-two-dimensional antiferromagnet with a triangular lattice CuCrO2 | Using electron-spin-resonance (ESR) technique we investigate the magnetic
structure of CuCrO2, quasi-two-dimensional antiferromagnet with weakly
distorted triangular lattice. Resonance frequencies and the excitation
conditions in CuCrO2 at low temperatures are well described in the frame of
cycloidal spin structure, de... | 1307.0955v2 |
2014-07-23 | Resolving single molecule structures with nitrogen-vacancy centers in diamond | We present two-dimensional nuclear magnetic resonance spectroscopy protocols
based on nitrogen-vacancy (NV) centers in diamond as efficient quantum sensors
of protein structure. Continuous microwave driving fields are used to achieve
Hartmann-Hahn resonances between NV spin sensor and proximate nuclei for
selective con... | 1407.6262v1 |
2015-02-09 | Collective nature of spin excitations in superconducting cuprates probed by resonant inelastic x-ray scattering | We used resonant inelastic x-ray scattering (RIXS) with and without analysis
of the scattered photon polarization, to study dispersive spin excitations in
the high temperature superconductor YBa2Cu3O6+x over a wide range of doping
levels (0.1 < x < 1). The excitation profiles were carefully monitored as the
incident ph... | 1502.02583v1 |
2015-02-28 | Interaction of Strain and Nuclear Spins in Silicon: Quadrupolar Effects on Ionized Donors | The nuclear spins of ionized donors in silicon have become an interesting
quantum resource due to their very long coherence times. Their perfect
isolation, however, comes at a price, since the absence of the donor electron
makes the nuclear spin difficult to control. We demonstrate that the
quadrupolar interaction allo... | 1503.00133v2 |
2015-04-06 | Spin Pumping in Electrodynamically Coupled Magnon-Photon Systems | We use electrical detection, in combination with microwave transmission, to
investigate both resonant and non-resonant magnon-photon coupling at room
temperature. Spin pumping in a dynamically coupled magnon-photon system is
found to be distinctly different from previous experiments. Characteristic
coupling features su... | 1504.01335v1 |
2015-05-05 | Spin pumping from a ferromagnet into a hopping insulator: the role of resonant absorption of magnons | Motivated by recent experiments on spin pumping from a ferromagnet into
organic materials in which the charge transport is due to hopping, we study
theoretically the generation and propagation of spin current in a hopping
insulator. Unlike metals, the spin polarization at the boundary with
ferromagnet is created as a r... | 1505.01211v1 |
2016-01-11 | Light Quark Spin Symmetry in $Z_b$ Resonances? | It is argued that the recent Belle data, consistent with no activity in the
spectrum of the $B^* \bar B + B \bar B^*$ pairs at the mass of the $Z_b(10650)$
resonance, imply that the part of the interaction between heavy mesons that
depends on the total spin of the light quark and antiquark is strongly
suppressed. In pa... | 1601.02540v1 |
2017-12-16 | High pressure electron spin resonance of the endohedral fullerene $^{15}\mathrm{N@C}_{60}$ | We measure the electron spin resonance spectrum of the endohedral fullerene
molecule $^{15}\mathrm{N@C}_{60}$ at pressures ranging from atmospheric
pressure to 0.25 GPa, and find that the hyperfine coupling increases linearly
with pressure. We present a model based on van der Waals interactions, which
accounts for this... | 1712.05991v1 |
2018-03-16 | Revealing weak spin-orbit coupling effects on charge carriers in a $π$-conjugated polymer | We measure electrically detected magnetic resonance (EDMR) on organic
light-emitting diodes (OLEDs) made of the polymer
poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) at room
temperature and high magnetic fields, where spectral broadening of the
resonance due to spin-orbit coupling (SOC) exceeds th... | 1803.06052v1 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.