publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
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2020-06-23 | Potential model prediction of fully-heavy tetraquarks $QQ\bar{Q}\bar{Q}$ ($Q=c, b$) | The fully-heavy tetraquark states $QQ\bar{Q}\bar{Q}$ ($Q=c, b$) are
systematically investigated by means of a nonrelativistic potential model. The
model is based on the lattice QCD study of the two-body $Q\bar{Q}$ interaction,
which exhibits a spin-independent Cornell potential along with a spin-spin
interaction. The f... | 2006.13756v4 |
2018-04-09 | Discrete resonant Rossby/drift wave triads: an explicit parameterisation and a fast direct numerical search algorithm | We report results on the explicit parameterisation of discrete Rossby-wave
resonant triads of the Charney-Hasegawa-Mima equation in the small-scale limit
(i.e. large Rossby deformation radius), following up from our previous solution
in terms of elliptic curves (Bustamante and Hayat, 2013). We find an explicit
paramete... | 1804.03092v1 |
2021-05-19 | Orbital Decay of Short-Period Exoplanets via Tidal Resonance Locking | A large fraction of known exoplanets have short orbital periods where tidal
excitation of gravity waves within the host star causes the planets' orbits to
decay. We study the effects of tidal resonance locking, in which the planet
locks into resonance with a tidally excited stellar gravity mode. Because a
star's gravit... | 2105.09335v2 |
2022-10-19 | Spectral engineering of integrated photonic filters using mode splitting in silicon nanowire integrated standing-wave resonators | Mode splitting induced by coherent optical mode interference in coupled
resonant cavities is a key phenomenon in photonic resonators that can lead to
powerful and versatile filtering functions, in close analogy to
electromagnetically-induced-transparency, Autler-Townes splitting, Fano
resonances, and dark states. It ca... | 2210.10224v1 |
2017-08-16 | Optical absorption preceding resonant double photoionization of aromatic hydrocarbons hydrocarbons | We analyze resonances in the double photoionization of a variety of aromatic
hydrocarbons. The resonances reflect the breakup of quasi-bound electron pairs.
The basic premise of this paper is that there is a direct connection between
the quasi-bound pairs and resonant peaks in the optical absorption that are
associated... | 1708.05049v1 |
2023-12-22 | Interference of resonances in two-proton emission of $^{16}$Ne | The $^{16}$Ne nucleus is a two-proton ($2p$) emitter, where an interference
of two resonances is expected since its core-proton subsystem,
$^{15}$F$=^{14}$O$+p$, has separate resonances in the $s_{1/2}$ and $d_{5/2}$
channels. We theoretically investigate the $2p$ emission from the unbound
$0^{+}$ state of $^{16}$Ne. T... | 2312.15017v2 |
2011-02-09 | Observation of second-harmonic generation induced by pure spin currents | Extensive efforts are currently being devoted to developing a new electronic
technology, called spintronics, where the spin of electrons is explored to
carry information. [1,2] Several techniques have been developed to generate
pure spin currents in many materials and structures. [3-10] However, there is
still no metho... | 1102.1784v1 |
2013-05-01 | Ballistic spin transport in exciton gases | Traditional spintronics relies on spin transport by charge carriers, such as
electrons in semiconductor crystals. This brings several complications: the
Pauli principle prevents the carriers from moving with the same speed; Coulomb
repulsion leads to rapid dephasing of electron flows. Spin-optronics is a
valuable alter... | 1305.0133v3 |
2013-05-10 | Polytype control of spin qubits in silicon carbide | Crystal defects can confine isolated electronic spins and are promising
candidates for solid-state quantum information. Alongside research focusing on
nitrogen vacancy centers in diamond, an alternative strategy seeks to identify
new spin systems with an expanded set of technological capabilities, a
materials driven ap... | 1305.2445v1 |
2018-05-07 | Electrically controlled long-distance spin transport through an antiferromagnetic insulator | Spintronics uses spins, the intrinsic angular momentum of electrons, as an
alternative for the electron charge. Its long-term goal is in the development
of beyond-Moore low dissipation technology devices. Recent progress
demonstrated the long-distance transport of spin signals across ferromagnetic
insulators. Antiferro... | 1805.02451v1 |
2019-02-01 | Photoinduced Rashba spin to charge conversion via interfacial unoccupied state | At interfaces with inversion symmetry breaking, Rashba effect couples the
motion of electrons to their spin; as a result, spin-charge interconversion
mechanism can occur. These interconversion mechanisms commonly exploit Rashba
spin splitting at the Fermi level by spin pumping or spin torque ferromagnetic
resonance. He... | 1902.00237v2 |
2017-10-04 | Possible evidence for spin-transfer torque induced by spin-triplet supercurrent | Cooper pairs in superconductors are normally spin singlet. Nevertheless,
recent studies suggest that spin-triplet Cooper pairs can be created at
carefully engineered superconductor-ferromagnet interfaces. If Cooper pairs are
spin-polarized they would transport not only charge but also a net spin
component, but without ... | 1710.01534v1 |
2021-03-16 | Large Spin-to-Charge Conversion in Ultrathin Gold-Silicon Multilayers | Investigation of the spin Hall effect in gold has triggered increasing
interest over the past decade, since gold combines the properties of a large
bulk spin diffusion length and strong interfacial spin-orbit coupling. However,
discrepancies between the values of the spin Hall angle of gold reported in the
literature h... | 2103.08876v1 |
2022-01-12 | Light and microwave driven spin pumping across FeGaB-BiSb interface | 3-D topological insulators (TI) with large spin Hall conductivity have
emerged as potential candidates for spintronic applications. Here, we report
spin to charge conversion in bilayers of amorphous ferromagnet (FM)
Fe_{78}Ga_{13}B_{9} (FeGaB) and 3-D TI Bi_{85}Sb_{15} (BiSb) activated by two
complementary techniques: ... | 2201.04686v1 |
2022-01-31 | Tuning spin-orbit torques across the phase transition in VO$_2$/NiFe heterostructure | The emergence of spin-orbit torques as a promising approach to
energy-efficient magnetic switching has generated large interest in material
systems with easily and fully tunable spin-orbit torques. Here, current-induced
spin-orbit torques in VO$_2$/NiFe heterostructures were investigated using
spin-torque ferromagnetic... | 2201.12984v1 |
2024-04-04 | Waveguide QED at the onset of spin-spin correlations | We experimentally explore the competition between light-mediated and direct
matter-matter interactions in waveguide quantum electrodynamics. For this, we
couple a superconducting line to a model magnetic material, made of organic
free radical DPPH molecules with a spin $S=1/2$ and a $g_{S}$ factor very close
to that of... | 2404.03727v1 |
2009-03-26 | Emergence of the persistent spin helix in semiconductor quantum wells | According to Noethers theorem, for every symmetry in nature there is a
corresponding conservation law. For example, invariance with respect to spatial
translation corresponds to conservation of momentum. In another well-known
example, invariance with respect to rotation of the electrons spin, or SU(2)
symmetry, leads t... | 0903.4709v2 |
2014-08-20 | Coherent transport and manipulation of spins in indirect exciton nanostructures | We report on the coherent control and transport of indirect exciton (IX)
spins in GaAs double quantum well (DQW) nanostructures. The spin dynamics was
investigated by optically generating spins using a focused, circularly
polarized light spot and by probing their spatial distribution using spatially
and polarization re... | 1408.4547v1 |
2002-04-18 | Ballistic spin transport through electronic stub tuners: spin precession, selection, and square-wave transmission | Ballistic spin transport is studied through electronic tuners with double
stubs attached to them. The spins precess due to the spin-orbit interaction.
Injected polarized spins can exit the structure polarized in the opposite
direction. A nearly square-wave spin transmission, with values 1 and 0, can be
obtained using a... | 0204391v1 |
1992-11-19 | Spin effects in the inspiral of coalescing compact binaries | We derive the contributions of spin-orbit and spin-spin coupling to the
gravitational radiation from coalescing binary systems of spinning compact
objects. We calculate spin effects in the symmetric, trace-free radiative
multipoles that determine the gravitational waveform, and the rate of energy
loss. Assuming a balan... | 9211025v1 |
2007-08-29 | Spin-charge separation in a strongly correlated spin-polarized chain | We combine the first-quantized path-integral formalism and bosonization to
develop a phenomenological theory for spin-charge coupled dynamics in
one-dimensional (1D) ferromagnetic systems with strong interparticle repulsion,
at low temperatures. We assume an effective spin-charge separation and retain
the standard Lutt... | 0708.4012v4 |
2008-11-14 | Hall Effect of Spin Waves in Frustrated Magnets | We examine a possible spin Hall effect for localized spin systems with no
charge degrees of freedom. In this scenario, a longitudinal magnetic field
gradient induces a transverse spin current carried by spin wave excitations
with an anomalous velocity which is associated with the Berry curvature raised
by spin chiralit... | 0811.2263v6 |
2009-09-14 | Collective modes of a helical liquid | We study low energy collective modes and transport properties of the "helical
metal" on the surface of a topological insulator. At low energies, electrical
transport and spin dynamics at the surface are exactly related by an operator
identity equating the electric current to the in-plane components of the spin
degrees ... | 0909.2477v2 |
2010-07-08 | Spin induced multipole moments for the gravitational wave flux from binary inspirals to third Post-Newtonian order | Using effective field theory techniques we calculate the source multipole
moments needed to obtain the spin contributions to the power radiated in
gravitational waves from inspiralling compact binaries to third Post-Newtonian
order (3PN). The multipoles depend linearly and quadratically on the spins and
include both sp... | 1007.1312v2 |
2011-08-14 | Observation of non-conventional spin waves in composite fermion ferromagnets | We find unexpected low energy excitations of fully spin-polarized
composite-fermion ferromagnets in the fractional quantum Hall liquid, resulting
from a complex interplay between a topological order manifesting through new
energy levels and a magnetic order due to spin polarization. The lowest energy
modes, which invol... | 1108.2901v1 |
2012-04-15 | Classical Aspects of Higher Spin Topologically Massive Gravity | We study the classical solutions of three dimensional topologically massive
gravity (TMG) and its higher spin generalization, in the first order
formulation. The action of higher spin TMG has been proposed in arXiv:1110.5113
to be of a Chern-Simons-like form. The equations of motion are more complicated
than the ones i... | 1204.3282v2 |
2012-08-20 | Reversal and Termination of Current-Induced Domain Wall Motion via Magnonic Spin-Transfer Torque | We investigate the domain wall dynamics of a ferromagnetic wire under the
combined influence of a spin-polarized current and magnonic spin-transfer
torque generated by an external field, taking also into account Rashba
spin-orbit coupling interactions. It is demonstrated that current-induced
motion of the domain wall m... | 1208.4108v1 |
2013-07-19 | Waves in the unseen : theory of spin excitations in a quantum spin nematic | The idea that a quantum magnet could act like a liquid crystal, breaking
spin-rotation symmetry without breaking time-reversal symmetry, holds an
abiding fascination. However, the very fact that spin nematic states do not
break time-reversal symmetry renders them "invisible" to the most common probes
of magnetism - the... | 1307.5131v2 |
2013-08-16 | Quantum kinetics of spinning neutral particles: General theory and Spin wave dispersion | Plasma physics give an example of physical system of particles with the long
range interaction. At small velocity of particles we can consider the plasma
approximately as a system of particles with the Coulomb interaction. The
Coulomb interaction is isotropic. Systems of spinning neutral particles have
long-range aniso... | 1308.3715v1 |
2014-02-17 | Incommensurate spin density wave as a signature of spin-orbit coupling | Close to half filling and in the limit of strong interactions the Hubbard
model leads a spin Hamiltonian. In its original isotropic form this is the
Heisenberg model with antiferromagnetic coupling $J$. On a square lattice there
is no frustration and the ground state is a classical antiferromagnet denoted
by the commen... | 1402.4093v1 |
2014-11-30 | Quantum Theory of Helimagnetic Thin Films | We study properties of a helimagnetic thin film with quantum Heisenberg spin
model by using the Green's function method. Surface spin configuration is
calculated by minimizing the spin interaction energy. It is shown that the
angles between spins near the surface are strongly modified with respect to the
bulk configura... | 1412.0184v1 |
2015-09-11 | Non-perturbative Correlation Effects in Diluted Magnetic Semiconductors | The effects of carrier-impurity correlations due to a Kondo-like spin-spin
interaction in diluted magnetic semiconductors are investigated. These
correlations are not only responsible for a transfer of spins between the
carriers and the impurities, but also produce non-perturbative effects in the
spin dynamics such as ... | 1509.03442v1 |
2017-02-22 | Is spin superfluidity possible in YIG films? | Recently it was suggested that stationary spin supercurrents (spin
superfluidity) are possible in the magnon condensate observed in
yttrium-iron-garnet (YIG) magnetic films under strong external pumping. Here we
analyze this suggestion. From topology of the equilibrium order parameter in
YIG one must not expect energet... | 1702.06994v2 |
2021-04-30 | Unstable binary black-hole spins: post-Newtonian theory and numerical relativity | Spin precession occurs in binary black holes whose spins are misaligned with
the orbital angular momentum. Otherwise, the spin configuration is constant and
the subsequent binary dynamics and gravitational-wave emission are much
simpler. We summarize a series of works which has shown that, while three of
the aligned co... | 2104.15011v1 |
2021-10-24 | Spin dynamics in the skyrmion-host lacunar spinel GaV4S8 | In the lacunar spinel GaV4S8, the interplay of spin, charge, and orbital
degrees of freedom produces a rich phase diagram that includes an unusual
Neel-type skyrmion phase composed of molecular spins. To provide insight into
the interactions underlying this complex phase diagram, we study the spin
excitations in GaV4S8... | 2110.12322v2 |
2020-01-18 | Giant photonic spin Hall effect near the Dirac points | The origin of spin-orbit interaction of light at a conventional optical
interface lies in the transverse nature of the photon polarization: The
polarizations associated with the plane-wave components experience slightly
different rotations in order to satisfy the transversality after reflection or
refraction. Recent ad... | 2001.06609v1 |
2020-07-07 | Unidirectional spin transport of a spin-orbit-coupled atomic matter wave using a moving Dirac $δ$-potential well | We study the transport of a spin-orbit-coupled atomic matter wave using a
moving Dirac $\delta$-potential well. In a spin-orbit-coupled system, bound
states can be formed in both ground and excited energy levels with a Dirac
$\delta$ potential. Because Galilean invariance is broken in a
spin-orbit-coupled system, movin... | 2007.03147v1 |
1997-11-25 | Nonlinear Spin Dynamics in Nuclear Magnets | A method is developed for solving nonlinear systems of differential, or
integrodifferential, equations with stochastic fields. The method makes it
possible to give an accurate solution for an interesting physical problem: What
are the peculiarities of nonlinear spin dynamics in nonequilibrium nuclear
magnets coupled wi... | 9711259v1 |
1999-01-28 | From Magnons to the Resonance Peak: Spin Dynamics in High-T_C Superconducting Cuprates by Inelastic Neutron Scattering | The spin dynamics of high temperature superconductors measured by inelastic
neutron scattering is reviewed. The spin susceptibility evolves a lot with
increasing doping from the undoped insulating state to the overdoped metallic
state. In the superconducting state, a strong magnetic resonance peak occurs in
the spin ex... | 9901333v2 |
2000-09-25 | An Electron Spin Resonance Selection Rule for Spin-Gapped Systems | The direct electron spin resonance (ESR) absorption between a singlet ground
state and the triplet excited states of spin gap systems is investigated. Such
an absorption, which is forbidden by the conservation of the total spin quantum
number in isotropic Hamiltonians, is allowed by the Dzyaloshinskii-Moriya
interactio... | 0009385v1 |
2003-05-16 | Spin-orbit coupling and electron spin resonance for interacting electrons in carbon nanotubes | We review the theoretical description of spin-orbit scattering and electron
spin resonance in carbon nanotubes. Particular emphasis is laid on the effects
of electron-electron interactions. The spin-orbit coupling is derived, and the
resulting ESR spectrum is analyzed both using the effective low-energy field
theory an... | 0305388v2 |
2003-10-14 | Spin resonance peak in Na$_{x}$CoO$_{2}\cdot y$H$_{2}$O superconductors: A probe of the pairing symmetry | Motivated by the recent discovery of superconductivity in layered
Na$_{x}$CoO$_{2}\cdot y$H$_{2}$O compound, we investigate theoretically the
spin dynamics in the superconducting state with three possible $p_{x}+ip_{y}$-,
$d+id'$-, and $f$-wave pairing symmetries in two-dimensional triangular
lattices. We find that a s... | 0310308v1 |
2005-09-19 | Enhancement of Spin Coherence using Q-factor Engineering in Semiconductor Microdisk Lasers | Semiconductor microcavities offer unique means of controlling light-matter
interactions, which have led to the development of a wide range of applications
in optical communications and inspired proposals for quantum information
processing and computational schemes. Studies of spin dynamics in microcavities
- a new and ... | 0509500v1 |
2006-06-03 | Sign changes and resonance of intrinsic spin Hall effect in two-dimensional hole gas | The intrinsic spin Hall conductance shows rich sign changes by applying a
perpendicular magnetic field in a two-dimensional hole gas. Especially, a
notable sign changes can be achieved by adjusting the characteristic length of
the Rashba coupling and hole density at moderate magnetic fields. This sign
issue may be easi... | 0606089v2 |
2006-07-25 | Transport and recombination through weakly coupled localized spin pairs in semiconductors during coherent spin excitation | Semi-analytical predictions for the transients of spin-dependent transport
and recombination rates through localized states in semiconductors during
coherent electron spin excitation are made for the case of weakly spin-coupled
charge carrier ensembles. The results show that the on-resonant Rabi frequency
of electrical... | 0607627v1 |
2006-10-03 | Theory of nonlinear optical spectroscopy of electron spin coherence in quantum dots | We study in theory the generation and detection of electron spin coherence in
nonlinear optical spectroscopy of semiconductor quantum dots doped with single
electrons. In third-order differential transmission spectra, the inverse width
of the ultra-narrow peak at degenerate pump and probe frequencies gives the
spin rel... | 0610075v1 |
2003-12-01 | Preparing high purity initial states for nuclear magnetic resonance quantum computing | Here we demonstrate how para-hydrogen can be used to prepare a two-spin
system in an almost pure state which is suitable for implementing nuclear
magnetic resonance (NMR) quantum computation. A 12ns laser pulse is used to
initiate a chemical reaction involving pure para-hydrogn (the nuclear spin
singlet of H2). The pro... | 0312014v4 |
2006-08-29 | Room-temperature manipulation and decoherence of a single spin in diamond | We report on room-temperature coherent manipulation of the spin of a single
nitrogen-vacancy center in diamond and a study of its coherence as a function
of magnetic field. We use magnetic resonance to induce Rabi nutations, and
apply a Hahn spin echo to remove the effect of low-frequency dephasing. A sharp
rise in the... | 0608233v2 |
2007-06-11 | Theory of Neutron Scattering in High-T$_c$ Cuprates: Two Component Spin-Fermion Model | Recent neutron scattering experiments have revealed that the generic form of
the magnetic excitations in the high-Tc cuprates of wide range of doping has
the so-called "hourglass" shape; it features both upward and downward
excitations at the incommensurate (IC) momenta spanning from the resonance peak
at the commensur... | 0706.1387v2 |
2009-05-11 | Hyperfine interaction mediated exciton spin relaxation in (In,Ga)As quantum dots | The population dynamics of dark and bright excitons in (In,Ga)As/GaAs quantum
dots is studied by two-color pump-probe spectroscopy in an external magnetic
field. With the field applied in Faraday geometry and at T<20 K, the dark
excitons decay on a ten nanoseconds time scale unless the magnetic field
induces a resonanc... | 0905.1586v2 |
2009-07-06 | Skyrme-Rpa Description of Spin-Flip M1 Giant Resonance | The spin-flip M1 giant resonance is explored in the framework of Random Phase
Approximation on the basis of the Skyrme energy functional. A representative
set of eight Skyrme parameterizations (SkT6, SkM*, SLy6, SG2, SkO, SkO', SkI4,
and SV-bas) is used. Light and heavy, spherical and deformed nuclei ($^{48}$Ca,
$^{158... | 0907.0923v1 |
2009-07-12 | Why could Electron Spin Resonance be observed in a heavy fermion Kondo lattice? | We develop a theoretical basis for understanding the spin relaxation
processes in Kondo lattice systems with heavy fermions as experimentally
observed by electron spin resonance (ESR). The Kondo effect leads to a common
energy scale that regulates a logarithmic divergence of different spin kinetic
coefficients and supp... | 0907.2074v2 |
2009-12-10 | Coupled-channel calculation of bound and resonant spectra of Lambda-9Be and Lambda-13C hypernuclei | A Multi-Channel Algebraic Scattering (MCAS) approach has been used to analyze
the spectra of two hyper-nuclear systems, Lambda-9Be and Lambda-13C. The
splitting of the two odd-parity excited levels (1/2^- and 3/2^-) at 11 MeV
excitation in Lambda-13C is driven mainly by the weak Lambda-nucleus spin-orbit
force, but the... | 0912.1970v1 |
2010-01-22 | Spin-flip M1 giant resonance as a challenge for Skyrme forces | Despite a great success of the Skyrme mean-field approach in exploration of
nuclear dynamics, it seems to fail in description of the spin-flip M1 giant
resonance. The results for different Skyrme parameterizations are contradictory
and poorly agree with experiment. In particular, there is no parameterization
which simu... | 1001.3965v1 |
2010-03-02 | Inelastic neutron scattering and frequency domain magnetic resonance studies of S=4 and S=12 Mn$_6$ single-molecule magnets | We investigate the magnetic properties of three Mn$_6$ single molecule
magnets by means of inelastic neutron scattering and frequency domain magnetic
resonance spectroscopy. The experimental data reveal that small structural
distortions of the molecular geometry produce a significant effect on the
energy level diagram ... | 1003.0537v1 |
2010-04-21 | Magnetic strong coupling in a spin-photon system and transition to classical regime | We study the energy level structure of the Tavis-Cumming model applied to an
ensemble of independent magnetic spins $s=1/2$ coupled to a variable number of
photons. Rabi splittings are calculated and their distribution is analyzed as a
functin of photon number $n_{\rm max}$ and spin system size $N$. A sharp
transition ... | 1004.3605v2 |
2010-05-03 | Electron transport in waveguides with spatially modulated strengths of the Rashba and Dresselhaus terms of the spin-orbit interaction | We study electron transport through waveguides (WGs) in which the strengths
of the Rashba ($\alpha$) and Dresselhaus ($\beta$) terms of the spin-orbit
interaction (SOI) vary in space. Subband mixing, due to lateral confinement, is
taken into account only between the two first subbands. For sufficiently narrow
WGs the t... | 1005.0309v1 |
2010-06-10 | Antiferromagnetically spin polarized oxygen observed in magneto-electric TbMn2O5 | We report the direct measurement of antiferromagnetic spin polarization at
the oxygen sites in the multiferroic TbMn2O5, through resonant soft x-ray
magnetic scattering. This supports recent theoretical models suggesting that
the oxygen spin polarization is key to the magnetoelectric coupling mechanism.
The spin polari... | 1006.1992v1 |
2011-01-11 | Analog of Electromagnetically Induced Transparency Effect for Two Nano/Micro-mechanical Resonators Coupled With Spin Ensemble | We study a hybrid nano-mechanical system coupled to a spin ensemble as a
quantum simulator to favor a quantum interference effect, the
electromagnetically induced transparency (EIT). This system consists of two
nano-mechanical resonators (NAMRs), each of which coupled to a nuclear spin
ensemble. It could be regarded as... | 1101.2115v1 |
2011-02-10 | Stimulated emission and absorption of photons in magnetic point contacts: toward metal-based spin-lasers | Point contacts between high anisotropy ferromagnetic SmCo5 and normal metal
Cu are used to achieve a strong spin-population inversion in the contact core.
Subjected to microwave irradiation in resonance with the Zeeman splitting in
Cu, the inverted spin-population relaxes through stimulated spin-flip photon
emission, d... | 1102.2167v1 |
2011-05-07 | Field Tuning the G-Factor in InAs Nanowire Double Quantum Dots | We study the effects of magnetic and electric fields on the g-factors of
spins confined in a two-electron InAs nanowire double quantum dot. Spin
sensitive measurements are performed by monitoring the leakage current in the
Pauli blockade regime. Rotations of single spins are driven using
electric-dipole spin resonance.... | 1105.1462v2 |
2011-05-26 | Bloch-oscillations of exciton-polaritons and photons for the generation of an alternating terahertz spin current | We analyze theoretically the spin dynamics of exciton-polaritons and photons
during their Bloch oscillations in a one-dimensional microwire. The wire
geometry induces an energy splitting between the longitudinal and transverse
electric polarized eigenmodes. We show analytically that a synchronized regime
between the Bl... | 1105.5278v1 |
2011-06-15 | Proposal for detecting spin-chirality terms in Mott insulators via resonant inelastic x-ray scattering | We consider the question of whether resonant inelastic x-ray scattering
(RIXS) can be used to detect many-body excitations that are coupled to the
spin-chirality terms S_i . (S_j x S_k) in a Mott insulator. We find that while
the spin-chirality terms are in general absent in the usual experimental setups
of RIXS, there... | 1106.3108v2 |
2011-10-29 | Mechanism of half-frequency electric dipole spin resonance in double quantum dots: Effect of nonlinear charge dynamics inside the singlet manifold | Electron dynamics in quantum dots manifests itself in spin-flip spectra
through electric dipole spin resonance (EDSR). Near a neutrality point
separating two different singlet charged states of a double quantum dot, charge
dynamics inside a $2\times2$ singlet manifold can be described by a
1/2-pseudospin. In this regio... | 1110.6569v2 |
2011-11-05 | Coherent storage of photoexcited triplet states using 29Si nuclear spins in silicon | Pulsed electron paramagnetic resonance spectroscopy of the photoexcited,
metastable triplet state of the oxygen-vacancy center in silicon reveals that
the lifetime of the ms = \pm1 sub-levels differ significantly from that of the
ms =0 state. We exploit this significant difference in decay rates to the
ground singlet s... | 1111.1344v1 |
2012-01-18 | Crossover from coherent to incoherent scattering in spin-orbit dominated Sr2IrO4 | Strong spin-orbit interaction in the two dimensional compound Sr2IrO4 leads
to the formation of Jeff=1/2 isospins with unprecedented dynamics. In Raman
scattering a continuum attributed to double spin scattering is observed. With
higher excitation energy of the incident Laser this signal crosses over to an
incoherent b... | 1201.3841v1 |
2012-10-21 | Spin-dependent exciton quenching and intrinsic spin coherence in CdSe/CdS nanocrystals | Large surface to volume ratios of semiconductor nanocrystals cause
susceptibility to charge trapping, which can modify luminescence yields and
induce single-particle blinking. Optical spectroscopies cannot differentiate
between bulk and surface traps in contrast to spin-resonance techniques, which
in principle avail ch... | 1210.5684v1 |
2013-01-28 | Spin filter effect at room temperature in GaN/GaMnN ferromagnetic resonant tunneling diode | We have investigated the spin current polarization without the external
magnetic field in the resonant tunneling diode with the emitter and quantum
well layers made from the ferromagnetic GaMnN. For this purpose we have applied
the self-consistent Wigner-Poisson method and studied the spin-polarizing
effect of the para... | 1301.6544v1 |
2013-02-07 | Quantum bath-driven decoherence of mixed spin systems | The decoherence of mixed electron-nuclear spin qubits is a topic of great
current importance, but understanding is still lacking: while important
decoherence mechanisms for spin qubits arise from quantum spin bath
environments with slow decay of correlations, the only analytical framework for
explaining observed sharp ... | 1302.1709v4 |
2013-08-16 | Persistent spin excitations in doped antiferromagnets revealed by resonant inelastic light scattering | How coherent quasiparticles emerge by doping quantum antiferromagnets is a
key question in correlated electron systems, whose resolution is needed to
elucidate the phase diagram of copper oxides. Recent resonant inelastic X-ray
scattering (RIXS) experiments in hole-doped cuprates have purported to measure
high-energy c... | 1308.3717v2 |
2013-10-16 | Terahertz out-of-plane resonances due to spin-orbit coupling | A microscopic kinetic theory is developed which allows to investigate
non-Abelian SU(2) systems interacting with meanfields and spin-orbit coupling
under magnetic fields in one, two, and three dimensions. The coupled kinetic
equations for the scalar and spin components are presented and linearized with
respect to an ex... | 1310.4405v1 |
2013-12-21 | Optically Detected Cross-Relaxation Spectroscopy of Electron Spins in Diamond | The application of magnetic resonance (MR) spectroscopy at progressively
smaller length scales may eventually permit "chemical imaging" of spins at the
surfaces of materials and biological complexes. In particular, the negatively
charged nitrogen-vacancy (NV-) centre in diamond has been exploited as an
optical transduc... | 1312.6313v1 |
2014-02-25 | A quantum mechanical NMR simulation algorithm for protein-scale spin systems | Nuclear magnetic resonance spectroscopy is one of the few remaining areas of
physical chemistry for which polynomially scaling simulation methods have not
so far been available. Here, we report such a method and illustrate its
performance by simulating common 2D and 3D liquid state NMR experiments
(including accurate d... | 1402.6139v1 |
2015-01-22 | Incoherent excitation and switching of spin states in exciton-polariton condensates | We investigate, theoretically and numerically, the spin dynamics of a
two-component exciton-polariton condensate created and sustained by
non-resonant spin-polarized optical pumping of a semiconductor microcavity.
Using the open-dissipative mean-field model, we show that the existence of well
defined phase-locked stead... | 1501.05355v1 |
2015-02-25 | Observation of a phononic Mollow triplet in a hybrid spin-nanomechanical system | Reminiscent of the bound character of a qubit's dynamics confined on the
Bloch sphere, the observation of a Mollow triplet in the resonantly driven
qubit fluorescence spectrum represents one of the founding signatures of
Quantum Electrodynamics. Here we report on its observation in a hybrid
spin-nanomechanical system, ... | 1502.07071v1 |
2015-05-07 | Electronic spin susceptibilities and superconductivity in HgBa$_{2}$CuO$_{4+δ}$ from nuclear magnetic resonance | Nuclear magnetic resonance (NMR) experiments on single crystals of
HgBa$_{2}$CuO$_{4+\delta}$ are presented that identify two distinct
temperature-dependent spin susceptibilities: one is due to a spin component
that is temperature-dependent above the critical temperature for
superconductivity ($T_{\rm c}$) and reflects... | 1505.01725v1 |
2015-06-26 | Spin-dependent coherent transport in a double quantum dot system | We study spin-resolved resonant tunneling in a system of two quantum dots
sandwiched between doped quantum wells. In the coherent (Dicke) regime, i.e.,
when quantum dot separation is smaller than the Fermi wavelength in a
two-dimensional electron gas in quantum wells, application of an in-plane
magnetic field leads to ... | 1506.08214v2 |
2015-10-13 | Spin liquid phases of Mott insulating ultracold bosons | Mott insulating ultracold gases posses a unique whole-atom exchange
interaction which enables large quantum fluctuations between the Zeeman
sublevels of each atom. By strengthening this interaction---either through the
use of large-spin atoms, or by tuning the particle-particle interactions via
optical Feshbach resonan... | 1510.03851v1 |
2015-10-22 | Electron spin control of optically levitated nanodiamonds in vacuum | Electron spins of diamond nitrogen-vacancy (NV) centers are important quantum
resources for nanoscale sensing and quantum information. Combining NV spins
with levitated optomechanical resonators will provide a hybrid quantum system
for novel applications. Here we optically levitate a nanodiamond and
demonstrate electro... | 1510.06715v2 |
2015-11-16 | Electron paramagnetic resonance spectroscopy using a dc-SQUID magnetometer directly coupled to an electron spin ensemble | We demonstrate electron spin polarization detection and electron paramagnetic
resonance (EPR) spectroscopy using a direct current superconducting quantum
interference device (dc-SQUID) magnetometer. Our target electron spin ensemble
is directly glued on the dc-SQUID magnetometer that detects electron spin
polarization ... | 1511.04832v1 |
2016-01-08 | Detecting the orbital character of the spin fluctuation in the Iron-based superconductors with the resonant inelastic X-ray scattering spectroscopy | The orbital distribution of the spin fluctuation in the iron-based
superconductors(IBSs) is the key information needed to understand the
magnetism, superconductivity and electronic nematicity in these multi-orbital
systems. In this work, we propose that the resonant inelastic X-ray
scattering(RIXS) technique can be use... | 1601.01809v3 |
2016-05-11 | Resonant inelastic X-ray scattering response of the Kitaev honeycomb model | We calculate the resonant inelastic X-ray scattering (RIXS) response of the
Kitaev honeycomb model, an exactly solvable quantum-spin-liquid model with
fractionalized Majorana and flux excitations. We find that the fundamental RIXS
channels, the spin-conserving (SC) and the non-spin-conserving (NSC) ones, do
not interfe... | 1605.03272v2 |
2017-12-13 | Mobile bound states of Rydberg excitations in a lattice | Spin lattice models play central role in the studies of quantum magnetism and
non-equilibrium dynamics of spin excitations -- magnons. We show that a spin
lattice with strong nearest-neighbor interactions and tunable long-range
hopping of excitations can be realized by a regular array of laser driven
atoms, with an exc... | 1712.04713v1 |
2018-05-10 | Understanding Spin Configuration in the Geometrically Frustrated Magnet TbB$_{4}$: a Resonant Soft X-ray Scattering Study | The frustrated magnet has been regarded as a system that could be a promising
host material for the quantum spin liquid (QSL). However, it is difficult to
determine the spin configuration and the corresponding mechanism in this
system, because of its geometrical frustration (i.e., crystal structure and
symmetry). Herei... | 1805.04209v1 |
2018-05-15 | Spin-orbit coupling and electric-dipole spin resonance in a nanowire double quantum dot | We study the electric-dipole transitions for a single electron in a double
quantum dot located in a semiconductor nanowire. Enabled by spin-orbit coupling
(SOC), electric-dipole spin resonance (EDSR) for such an electron can be
generated via two mechanisms: the SOC-induced intradot pseudospin states mixing
and the inte... | 1805.05541v1 |
2018-11-03 | Resonant optical spin initialization and readout of single silicon vacancies in 4H-SiC | The silicon monovacancy in 4H-SiC is a promising candidate for solid-state
quantum information processing. We perform high-resolution optical spectroscopy
on single V2 defects at cryogenic temperatures. We find favorable low
temperature optical properties that are essential for optical readout and
coherent control of i... | 1811.01293v2 |
2017-05-29 | The neutral silicon-vacancy center in diamond: spin polarization and lifetimes | We demonstrate optical spin polarization of the neutrally-charged
silicon-vacancy defect in diamond ($\mathrm{SiV^{0}}$), an $S=1$ defect which
emits with a zero-phonon line at 946 nm. The spin polarization is found to be
most efficient under resonant excitation, but non-zero at below-resonant
energies. We measure an e... | 1705.10205v1 |
2018-07-24 | Exciton spin relaxation in InAs/InGaAlAs/InP(001) quantum dashes emitting near 1.55 μm | Exciton spin and related optical polarization in self-assembled
InAs/In$_{0.53}$Ga$_{0.23}$Al$_{0.24}$As/InP(001) quantum dashes emitting at
1.55 {\mu}m are investigated by means of polarization- and time-resolved
photoluminescence, as well as photoluminescence excitation spectroscopy, at
cryogenic temperature. We inve... | 1807.09143v1 |
2018-10-29 | Optimized electrical control of a Si/SiGe spin qubit in the presence of an induced frequency shift | Electron spins confined in quantum dots are an attractive system to realize
high-fidelity qubits owing to their long coherence time. With the prolonged
spin coherence time, however, the control fidelity can be limited by systematic
errors rather than decoherence, making characterization and suppression of
their influen... | 1810.12040v1 |
2018-10-30 | Constant-adiabaticity RF-pulses for generating long-lived singlet spin states in NMR | A method is implemented to perform "fast" adiabatic variation of the spin
Hamiltonian by imposing the constant adiabaticity condition. The method is
applied to improve the performance of singlet-state Nuclear Magnetic Resonance
(NMR) experiments, specifically, for efficient generation and readout of the
singlet spin or... | 1810.12697v1 |
2016-03-09 | Electric dipole spin resonance in systems with a valley dependent g-factor | In this theoretical study we qualitatively and quantitatively investigate the
electric dipole spin resonance (EDSR) in a single Si/SiGe quantum dot in the
presence of a magnetic field gradient, e.g., produced by a ferromagnet. We
model a situation in which the control of electron spin states is achieved by
applying an ... | 1603.02829v1 |
2017-06-20 | Tuning an effective spin chain of three strongly interacting one-dimensional fermions with the transversal confinement | Strongly interacting one-dimensional fermions form an effective spin chain in
the absence of an external lattice potential. We show that the exchange
coefficients of such a chain may be locally tuned by properly tailoring the
transversal confinement. In particular, in the vicinity of a
confinement-induced resonance (CI... | 1706.06513v2 |
2020-03-06 | g-tensor resonance in double quantum dots with site-dependent g-tensors | Pauli spin blockade (PSB) has long been an important tool for spin read-out
in double quantum dot (DQD) systems with interdot tunneling $t$. In this paper
we show that the blockade is lifted if the two dots experience distinct
effective magnetic fields caused by site-dependent g-tensors $g_L$ and $g_R$
for the left and... | 2003.03102v1 |
2020-09-25 | Spin-selective resonant tunneling induced by Rashba spin-orbit interaction in semiconductor nanowire | We consider a single electron confined within a quantum wire in a system of
two electrostatically-induced QDs defined by nearby gates. The time-varying
electric field, of single GHz frequency, perpendicular to the quantum wire, is
used to induce the Rashba coupling and enable spin-dependent resonant tunneling
of the el... | 2009.12439v2 |
2021-04-06 | Spin-orbit enabled quantum transport channels in a two-hole double quantum dot | We analyze experimentally and theoretically the transport spectra of a gated
lateral GaAs double quantum dot containing two holes. The strong spin-orbit
interaction present in the hole subband lifts the Pauli spin blockade and
allows to map out the complete spectra of the two-hole system. By performing
measurements in ... | 2104.02568v1 |
2008-06-11 | Excited-state spectroscopy using single-spin manipulation in diamond | We use single-spin resonant spectroscopy to study the spin structure in the
orbital excited-state of a diamond nitrogen-vacancy center at room temperature.
We find that the excited state spin levels have a zero-field splitting that is
approximately half of the value of the ground state levels, a g-factor similar
to the... | 0806.1939v1 |
2019-01-07 | Stabilisation of an optical transition energy via nuclear Zeno dynamics in quantum dot-cavity systems | We investigate the effect of nuclear spins on the phase shift and
polarisation rotation of photons scattered off a quantum dot-cavity system. We
show that as the phase shift depends strongly on the resonance energy of an
electronic transition in the quantum dot, it can provide a sensitive probe of
the quantum state of ... | 1901.01962v2 |
2019-04-30 | Electric-field control and noise protection of the flopping-mode spin qubit | We propose and analyze a novel "flopping-mode" mechanism for electric dipole
spin resonance based on the delocalization of a single electron across a double
quantum dot confinement potential. Delocalization of the charge maximizes the
electronic dipole moment compared to the conventional single dot spin resonance
confi... | 1904.13117v2 |
2019-10-27 | Stochastic thermodynamics of an electron-spin-resonance quantum dot system | We present a stochastic thermodynamics analysis of an electron-spin-resonance
pumped quantum dot device in the Coulomb-blocked regime, where a pure spin
current is generated without an accompanying net charge current. Based on a
generalized quantum master equation beyond secular approximation, quantum
coherences are ac... | 1910.12275v1 |
2020-10-27 | Searching spin-mass interaction using a diamagnetic levitated magnetic resonance force sensor | Axion-like particles (ALPs) are predicted to mediate exotic interactions
between spin and mass. We propose an ALP-searching experiment based on the
levitated micromechanical oscillator, which is one of the most sensitive
sensors for spin-mass forces at a short distance. The proposed experiment tests
the spin-mass reson... | 2010.14199v3 |
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