publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
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2003-01-31 | Entanglement of Electron Spin and Orbital States in Spintronic Quantum Transport | An electron within a mesoscopic (quantum-coherent) spintronic structure is
described by a single wave function which, in the presence of both charge
scattering and spin-orbit coupling, encodes an information about {\em
entanglement} of its spin and orbital degrees of freedom. The quantum state--an
{\em improper} mixtur... | 0301614v3 |
2012-11-09 | Interaction induced staggered spin-orbit order in two-dimensional electron gas | We propose and formulate an interaction induced staggered spin-orbit order as
a new emergent phase of two-dimensional Fermi gases. We show that when some
form of inherent spin-splitting via Rashba-type spin-orbit coupling renders two
helical Fermi surfaces to become significantly `nested', a Fermi surface
instability a... | 1211.2018v1 |
2013-08-20 | Hole Spin Helix: Anomalous Spin Diffusion in Anisotropic Strained Hole Quantum Wells | We obtain the spin-orbit interaction and spin-charge coupled transport
equations of a two-dimensional heavy hole gas under the influence of strain and
anisotropy. We show that a simple two-band Hamiltonian can be used to describe
the holes. In addition to the well-known cubic hole spin-orbit interaction,
anisotropy cau... | 1308.4248v3 |
2016-08-23 | The effect of spin-orbit coupling on the effective-spin correlation in YbMgGaO4 | Motivated by the recent experiments on the triangular lattice spin liquid
YbMgGaO$_4$, we explore the effect of spin-orbit coupling on the effective-spin
correlation of the Yb local moments. We point out the anisotropic interaction
between the effective-spins on the nearest neighbor bonds is sufficient to
reproduce the... | 1608.06445v2 |
2016-08-26 | RKKY oscillations in the spin relaxation rates of atomic scale nanomagnets | Exchange interactions with itinerant electrons are known to act as a
relaxation mechanism for individual local spins. The same exchange interactions
are also known to induce the so called RKKY indirect exchange interaction
between two otherwise decoupled local spins. Here we show that both the spin
relaxation and the R... | 1608.07462v2 |
2019-04-24 | Enhanced spin-triplet pairing in magnetic junctions with s-wave superconductors | A common path to superconducting spintronics, Majorana fermions, and
topologically-protected quantum computing relies on spin-triplet
superconductivity. While naturally occurring spin-triplet pairing is elusive
and even common spin-triplet candidates, such as Sr$_2$RuO$_4$, support
alternative explanations, proximity e... | 1904.10773v1 |
2023-01-28 | Self-driven Hybrid Atomic Spin Oscillator | A self-driven hybrid atomic spin oscillator is demonstrated in theory and
experiment with a vapor Rb-Xe dual-spin system. The raw signal of Rb spin
oscillation is amplified, phase-shifted and sent back to drive the Xe spins
coherently. By fine tuning the driving field strength and phase, a
self-sustaining spin oscillat... | 2301.12121v2 |
2019-08-19 | Nonlinear Rossby wave-wave and wave-mean flow theory for long term Solar cycle modulations | The Schwabe cycle of solar activity exhibits modulations and frequency
fluctuations on slow time scales of centuries and millennia. Plausible physical
explanations for the cause of these long-term variations of the solar cycle are
still elusive, with possible theories including stochasticity of alpha effect
and fluctua... | 1908.07056v1 |
1998-06-26 | Electron-spin-resonance in the doped spin-Peierls compound Cu(1-x)Ni(x)GeO3 | ESR-study of the Ni-doped spin-Peierls compound CuGeO3 has been performed in
the frequency range 9-75 GHz. At low temperatures the g-factor is smaller than
the value expected for Cu- and Ni-ions. This anomaly is explained by the
formation of magnetic clusters around the Ni-ions within a nonmagnetic
spin-Peierls matrix.... | 9806325v1 |
2002-12-11 | Ferromagnetic resonant tunneling diodes as spin polarimeters and polarizers | A method for measuring the degree of spin polarization of magnetic materials
based on spin-dependent resonant tunneling is proposed. The device we consider
is a ballistic double-barrier resonant structure consisting of a ferromagnetic
layer embedded between two insulating barriers. A simple procedure, based on a
detail... | 0212242v1 |
2006-12-21 | Zero-conductance resonances and spin-filtering effects in ring conductors subject to Rashba coupling | We investigate the effect of Rashba spin-orbit coupling and of a tunnel
barrier on the zero conduc- tance resonances appearing in a one-dimensional
conducting Aharonov-Bohm (AB) ring symmet- rically coupled to two leads. The
transmission function of the corresponding one-electron problem is derived
within the scatterin... | 0612560v1 |
2002-11-12 | Spin Response of the Nucleon in the Resonance Region | I discuss recent results from Jefferson Lab on the measurement of inclusive
spin structure functions in the nucleon resonance region using polarized
electron beams and polarized targets. Results on the first moment of the spin
structure function for protons and neutrons are discussed, as well as the
Bjorken integral. I... | 0211185v1 |
2007-06-01 | Spin Effect on the Resonant Tunneling Characteristics of a Double-Barrier Heterostructures Under Longitudinal Stresses | Theoretical research on electronic properties in mesoscopic condensed matter
systems has focused primarily on the electron charge freedom degrees, while its
corresponding spin freedom degrees have not yet received the same attention.
Nevertheless nowadays there has been an increment in the number of electron
spin-relat... | 0706.0177v1 |
2007-07-24 | Pauli-Spin-Blockade Transport through a Silicon Double Quantum Dot | We present measurements of resonant tunneling through discrete energy levels
of a silicon double quantum dot formed in a thin silicon-on-insulator layer. In
the absence of piezoelectric phonon coupling, spontaneous phonon emission with
deformation-potential coupling accounts for inelastic tunneling through the
ground s... | 0707.3513v2 |
2007-12-02 | Spin resonance in the d-wave superconductor CeCoIn5 | Neutron scattering is used to probe antiferromagnetic spin fluctuations in
the d-wave heavy fermion superconductor CeCoIn$_{5}$ (T$_{c}$=2.3 K).
Superconductivity develops from a state with slow ($\hbar\Gamma$=0.3 $\pm$ 0.15
meV) commensurate (${\bf{Q_0}}$=(1/2,1/2,1/2)) antiferromagnetic spin
fluctuations and nearly i... | 0712.0172v1 |
2008-02-28 | Physical Programm and Acceleration of Polarized Light Nuclei Beams at Jinr Nuclotron | The physical spin program at high $p_T$ region and energies $s^{1/2}_{NN}
\sim 10 GeV$ is discussed. It's shown that cumulative processes, color
transparency problem and polarization phenomenons directly connect with
properties new form of the nuclear matter as Color Quark Condensate(CQC).
Studies of CQC one of the mos... | 0802.4153v1 |
2010-10-28 | Quantum Dot Spin Filter in Resonant Tunneling and Kondo Regimes | A quantum dot with spin-orbit interaction can work as an efficient spin
filter if it is connected to N (> 2) external leads via tunnel barriers. When
an unpolarized current is injected to a quantum dot from a lead, polarized
currents are ejected to other leads. A two-level quantum dot is examined as a
minimal model. Fi... | 1010.5956v2 |
2011-01-27 | Modes of magnetic resonance in the spin liquid phase of Cs2CuCl4 | We report the observation of a frequency shift and splitting of the electron
spin resonance (ESR) mode of the low-dimensional S=1/2 frustrated
antiferromagnet Cs2CuCl4 in the spin-correlated state below the Curie-Weiss
temperature 4 K but above the ordering temperature 0.62 K. The shift and
splitting exhibit strong ani... | 1101.5275v1 |
2011-03-07 | Polariton spin Faraday rotation dynamics in a GaAs microcavity | Polariton spin carries the combination of the exciton and the photon spin,
which is manifested in the circularly polarized emission degree in a III-V
quantum wells microcavity system. Relaxation process of such spin system is a
complex subject since it involve upper or lower polariton branch, resonant or
non resonant p... | 1103.1337v2 |
2011-09-02 | Measurement of statistical nuclear spin polarization in a nanoscale GaAs sample | We measure the statistical polarization of quadrupolar nuclear spins in a
sub-micrometer (0.6 um^3) particle of GaAs using magnetic resonance force
microscopy. The crystalline sample is cut out of a GaAs wafer and attached to a
micro-mechanical cantilever force sensor using a focused ion beam technique.
Nuclear magneti... | 1109.0411v2 |
2012-07-25 | High cooperativity in coupled microwave resonator ferrimagnetic insulator hybrids | We report the observation of strong coupling between the exchange-coupled
spins in gallium-doped yttrium iron garnet and a superconducting coplanar
microwave resonator made from Nb. The measured coupling rate of 450 MHz is
proportional to the square-root of the number of exchange-coupled spins and
well exceeds the loss... | 1207.6039v2 |
2013-03-02 | Nuclear-spin-dependent coherent population trapping of single nitrogen vacancy centers in diamond | Coherent population trapping (CPT) provides a highly sensitive means for
probing the energy level structure of an atomic system. For a nitrogen vacancy
center in diamond, the CPT offers an alternative to the standard
optically-detected magnetic resonance method for measuring the hyperfine
structure of the electronic gr... | 1303.0421v1 |
2013-05-10 | Observation of conduction electron spin resonance in boron doped diamond | We observe the electron spin resonance of conduction electrons in boron doped
(6400 ppm) superconducting diamond (Tc =3.8 K). We clearly identify the
benchmarks of conduction electron spin resonance (CESR): the nearly temperature
independent ESR signal intensity and its magnitude which is in good agreement
with that ex... | 1305.2366v1 |
2014-02-28 | Simulating systems of itinerant spin-carrying particles using arrays of superconducting qubits and resonators | We propose possible approaches for the quantum simulation of itinerant
spin-carrying particles in a superconducting qubit-resonator array. The
standard Jaynes-Cummings-Hubbard setup considered in several recent studies can
readily be used as a quantum simulator for a number of relevant phenomena,
including the interact... | 1402.7185v2 |
2015-02-02 | Resonant magneto-tunneling between normal and ferromagnetic electrodes in relation to the three-terminal spin transport | The recently suggested mechanism [Y. Song and H. Dery, Phys. Rev. Lett. 113,
047205 (2014)] of the three-terminal spin transport is based on the resonant
tunneling of electrons between ferromagnetic and normal electrodes via an
impurity. The sensitivity of current to a weak external magnetic field stems
from a spin blo... | 1502.00350v1 |
2015-10-05 | Resonant Spin and Charge Hall Effects in 2D Electron Gas with Unequal Rashba and Dresselhaus Spin-Orbit Couplings under a Perpendicular Magnetic Field | We have investigated the complex two-dimensional electron system with unequal
Rashba and Dresselhaus spin-orbit interactions in the presence of a
perpendicular magnetic field. The spin polarizations are obtained in a wide
range of magnetic fields. It is shown that such a system is hard to be
magnetized. We also find th... | 1510.01012v1 |
2015-11-25 | Ferromagnetic resonance phase imaging in spin Hall multilayers | We experimentally image the magnetic precession phase of patterned spin Hall
multilayer samples to study the rf driving field vector using time-resolved
anomalous Nernst effect (TRANE) microscopy. Our ferromagnetic resonance (FMR)
measurements quantify the phase and amplitude for both the magnetic precession
and the el... | 1511.08126v1 |
2015-11-27 | Resonance spin-charge phenomena and mechanism of magnetoresistance anisotropy in manganite/metal bilayer structures | The dc voltage generated under ferromagnetic resonance has been studied in
bilayer structures based on manganite thin epitaxial films La0.67Sr0.33MnO3
(LSMO) and non-magnetic metals (Au, Pt, and SrRuO3) in the temperature range up
to the Curie point. The effect is shown to be caused by two different
phenomena: (1) the ... | 1511.08664v1 |
2015-11-17 | Fingerprints of entangled spin and orbital physics in itinerant ferromagnets via angle resolved $resonant$ photoemission | A novel method for mapping the local spin and orbital nature of the ground
state of a system via corresponding flip excitations in both sectors is
proposed based on angle resolved resonant photoemission and related diffraction
patterns, presented here for the first time via an ab-initio modified one-step
theory of phot... | 1604.07767v1 |
2016-05-10 | Electric-field-induced interferometric resonance of a one-dimensional spin-orbit-coupled electron | We consider a one-dimensional spin-orbit-coupled nanowire quantum dot, driven
by external electric and magnetic fields, and theoretically formulate an
electric mechanism to interfere its electron orbits. Owing to the existence of
spin-orbit coupling and a pulsed electric field, different spin-orbit states
are shown to ... | 1605.02871v3 |
2016-07-14 | Simultaneous Measurement of Resistively and Optically Detected Nuclear Magnetic Resonance in the $ν=2/3$ Fractional Quantum Hall Regime | We observe nuclear magnetic resonance (NMR) in the fractional quantum Hall
regime at Landau level filling factor $\nu=2/3$ from simultaneous measurement
of longitudinal resistance and photoluminescence (PL). The dynamic nuclear spin
polarization is induced by applying a huge electronic current at the spin phase
transit... | 1607.04094v1 |
2016-08-10 | Creating arbitrary quantum vibrational states in a carbon nanotube | We theoretically study the creation of single- and multi-phonon Fock states
and arbitrary superpositions of quantum phonon states in a nanomechanical
carbon nanotube (CNT) resonator. In our model, a doubly clamped CNT resonator
is initialized in the ground state and a single electron is trapped in a
quantum dot which i... | 1608.03068v1 |
2016-10-27 | Spin transfer driven resonant expulsion of a magnetic vortex core for efficient rf detector | Spin transfer magnetization dynamics have led to considerable advances in
Spintronics, including opportunities for new nanoscale radiofrequency devices.
Among the new functionalities is the radiofrequency(rf) detection using the
spin diode rectification effect in spin torque nano-oscillators (STNOs). In
this study, we ... | 1610.08660v1 |
2018-09-07 | Spin-Conserving Resonant Tunneling in Twist-Controlled WSe2-hBN-WSe2 Heterostructures | We investigate interlayer tunneling in heterostructures consisting of two
tungsten diselenide (WSe2) monolayers with controlled rotational alignment, and
separated by hexagonal boron nitride. In samples where the two WSe2 monolayers
are rotationally aligned we observe resonant tunneling, manifested by a large
conductan... | 1809.02639v1 |
2017-05-09 | Local optical control of the resonant dipole-dipole interaction between Rydberg atoms | We report on the local control of the transition frequency of a spin-$1/2$
encoded in two Rydberg levels of an individual atom by applying a
state-selective light shift using an addressing beam. With this tool, we first
study the spectrum of an elementary system of two spins, tuning it from a
non-resonant to a resonant... | 1705.03293v1 |
2017-02-06 | Spin resonance under topological driving fields | We study the dynamics of a localized spin-1/2 driven by a time-periodic
magnetic field that undergoes a topological transition. Despite the strongly
non-adiabatic effects dominating the spin dynamics, we find that the field's
topology appears clearly imprinted in the Floquet spin states through an
effective Berry phase... | 1702.01781v2 |
2020-09-01 | Mapping the stray fields of a nanomagnet using spin qubits in SiC | We report the use of optically addressable spin qubits in SiC to probe the
magnetic stray fields generated by a ferromagnetic microstructure
lithographically patterned on the surface of a SiC crystal. The stray fields
cause shifts in the resonance frequency of the spin centers. The spin resonance
is driven by a microme... | 2009.00347v1 |
2020-09-15 | Pulsed Electron Spin Resonance of an Organic Microcrystal by Dispersive Readout | We establish a testbed system for the development of high-sensitivity
Electron Spin Resonance (ESR) techniques for small samples at cryogenic
temperatures. Our system consists of a Niobium Nitride thin-film planar
superconducting microresonator designed to have a concentrated mode volume to
couple to a small amount of ... | 2009.06933v2 |
2020-11-05 | Magnetoacoustic Resonance to Probe Quadrupole-Strain Coupling in a Diamond Nitrogen-Vacancy Center as a Spin-Triplet System | A theory of magnetoacoustic resonance is proposed to measure
quadrupole-strain couplings in a spin-triplet state with the $C_{3v}$ point
group symmetry, considering the spin-strain interaction in a diamond
nitrogen-vacancy (NV) center. Based on the Floquet theory, we demonstrate how
the single- and two-phonon transitio... | 2011.02703v1 |
2017-03-15 | Amplitude sensing below the zero-point fluctuations with a two-dimensional trapped-ion mechanical oscillator | We present a technique to measure the amplitude of a center-of-mass (COM)
motion of a two-dimensional ion crystal of $\sim$100 ions. By sensing motion at
frequencies far from the COM resonance frequency, we experimentally determine
the technique's measurement imprecision. We resolve amplitudes as small as 50
pm, 40 tim... | 1703.05369v2 |
2019-01-15 | SiC-YiG X band quantum sensor for sensitive surface paramagnetic resonance applied to chemistry, biology, physics | Here I present the SiC-YiG Quantum Sensor, allowing electron paramagnetic
resonance (EPR) studies of monolayer or few nanometers thick chemical,
biological or physical samples located on the sensor surface. It contains two
parts, a 4H-SiC substrate with many paramagnetic silicon vacancies (V2) located
below its surface... | 1901.05073v1 |
2019-09-06 | Strong Spin Resonance Mode associated with suppression of soft magnetic ordering in Hole-doped Ba1-xNaxFe2As2 | Spin-resonance modes (SRM) are taken as evidence for magnetically driven
pairing in Fe-based superconductors, but their character remains poorly
understood. The broadness, the splitting and the spin-space anisotropies of
SRMs contrast with the mostly accepted interpretation as spin excitons. We
study hole-doped Ba$_{1-... | 1909.03046v1 |
2022-01-08 | Spin to charge conversion at Rashba-split SrTiO$_3$ interfaces from resonant tunneling | Spin-charge interconversion is a very active direction in spintronics. Yet,
the complex behaviour of some of the most promising systems such as SrTiO$_3$
(STO) interfaces is not fully understood. Here, on the basis of a 6-band
$\boldsymbol{k.p}$ method combined with spin-resolved scattering theory, we
give a theoretica... | 2201.02898v1 |
2022-02-15 | Analysis of the robustness and dynamics of spin-locking preparations for the detection of oscillatory magnetic fields | Extracting quantitative information of neuronal signals by non-invasive
imaging is an outstanding challenge for understanding brain function and
pathology. However, state-of-the-art techniques offer low sensitivity to deep
electrical sources. Stimulus induced rotary saturation (SIRS) is a recently
proposed magnetic res... | 2202.07705v2 |
2022-06-09 | Spin echo silencing using a current-biased frequency-tunable resonator | The ability to control microwave emission from a spin ensemble is a
requirement of several quantum memory protocols. Here, we demonstrate such
ability by using a resonator whose frequency can be rapidly tuned with a bias
current. We store excitations in an ensemble of rare-earth-ions and suppress
on-demand the echo emi... | 2206.04488v1 |
2023-01-09 | X-ray detected ferromagnetic resonance techniques for the study of magnetization dynamics | Element-specific spectroscopies using synchrotron-radiation can provide
unique insights into materials properties. The recently developed technique of
X-ray detected ferromagnetic resonance (XFMR) allows studying the magnetization
dynamics of magnetic spin structures. Magnetic sensitivity in XFMR is obtained
from the X... | 2301.03256v1 |
2002-03-21 | Cu nuclear spin-spin coupling in the dimer singlet state in SrCu2(BO3)2 | We report results of nuclear magnetic resonance (NMR) experiments in
SrCu2(BO3)2, a quasi two-dimensional spin system with a singlet ground state.
When magnetic field is applied along the c-axis, each of the quadrupole split
Cu resonance lines splits further into four lines. The spin-echo intensity for
some of the spli... | 0203426v1 |
2002-10-10 | Spin-Dependent Transport Through An Interacting Quantum Dot | We study the nonequilibrium spin transport through a quantum dot containing
two spin levels coupled to the magnetic electrodes. A formula for the
spin-dependent current is obtained and is applied to discuss the linear
conductance and magnetoresistance in the interacting regime, where the
so-called Kondo effect arises. ... | 0210241v1 |
2004-06-18 | Controlling the Spin Polarization of the Electron Current in a Semimagnetic Resonant-Tunneling Diode | The spin filtering effect of the electron current in a double-barrier
resonant-tunneling diode (RTD) consisting of ZnMnSe semimagnetic layers has
been studied theoretically. The influence of the distribution of the magnesium
ions on the coefficient of the spin polarization of the electron current has
been investigated.... | 0406434v1 |
2004-08-20 | Probing Single-Electron Spin Decoherence in Quantum Dots using Charged Excitons | We propose to use optical detection of magnetic resonance (ODMR) to measure
the decoherence time T_{2} of a single electron spin in a semiconductor quantum
dot. The electron is in one of the spin 1/2 states and a circularly polarized
laser can only create an optical excitation for one of the electron spin states
due to... | 0408451v1 |
2006-12-05 | Spin gap behavior in Cu$_2$Sc$_2$Ge$_4$O$_{13}$ by $^{45}$Sc nuclear magnetic resonance | We report the results of a $^{45}$Sc nuclear magnetic resonance (NMR) study
on the quasi-one-dimensional compound Cu$_2$Sc$_2$Ge$_4$O$_{13}$ at
temperatures between 4 and 300 K. This material has been a subject of current
interest due to indications of spin gap behavior. The temperature-dependent NMR
shift exhibits a c... | 0612106v1 |
2007-02-05 | Nuclear spin population and its control toward initialization using an all-electrical sub-micron scale nuclear magnetic resonance device | We study the nuclear spin population in a GaAs quantum well structure and
demonstrate its initialization using an all-electrical nuclear magnetic
resonance (NMR) device. In our device, nuclear spins are dynamically polarized
in a sub-micron scale region defined by split gates. The nuclear spin
populations under various... | 0702086v1 |
2006-07-25 | Electrical detection of 31P spin quantum states | In recent years, a variety of solid-state qubits has been realized, including
quantum dots, superconducting tunnel junctions and point defects. Due to its
potential compatibility with existing microelectronics, the proposal by Kane
based on phosphorus donors in Si has also been pursued intensively. A key issue
of this ... | 0607178v1 |
2008-03-07 | Optical-phonon mediated exciton energy relaxation with highly preserved spin states Optical-phonon mediated exciton energy relaxation with highly preserved spin states in a single quantum dot | High degree of preservation of spin states during energy relaxation processes
mediated by optical phonons is demonstrated in a single quantum dot.
Optical-phonon resonance and relevant suppression of spin relaxation are
clearly identified as dip structures in photoluminescence excitation spectra
probed by the positive ... | 0803.1037v1 |
2008-04-11 | Scalar and spin-dependent relativistic effects on magnetic properties calculated with four-component methods: the nuclear magnetic resonance parameters of the lead halides | The results of calculations of nuclear magnetic resonance (NMR) parameters
for the lead halides is reported in this paper. The results are obtained by
using four-component methods. The use of the nonrelativistic L\'evy-Leblond
Hamiltonian along with the relativistic Dirac-Coulomb and spin-free ones allows
us to discrim... | 0804.1952v1 |
2008-12-02 | A Non-Demolition Single Spin Meter | We present the theory of a single spin meter consisting of a quantum dot in a
magnetic field under microwave irradiation combined with a charge counter. We
show that when a current is passed through the dot, a change in the average
occupation number occurs if the microwaves are resonant with the on-dot Zeeman
splitting... | 0812.0459v1 |
2009-05-10 | Quantum size effects on spin-tunneling time in a magnetic resonant tunneling diode | We study theoretically the quantum size effects of a magnetic resonant
tunneling diode (RTD) with a (Zn,Mn)Se dilute magnetic semiconductor layer on
the spin-tunneling time and the spin polarization of the electrons. The results
show that the spin-tunneling times may oscillate and a great difference between
the tunneli... | 0905.1496v2 |
2009-06-29 | Pumping of nuclear spins by the optical solid effect in a quantum dot | We demonstrate that efficient optical pumping of nuclear spins in
semiconductor quantum dots (QDs) can be achieved by resonant pumping of
optically "forbidden" transitions. This process corresponds to one-to-one
conversion of a photon absorbed by the dot into a polarized nuclear spin, which
also has potential for initi... | 0906.5260v2 |
2009-08-03 | Direct Measurement of Quantum Dot Spin Dynamics using Time-Resolved Resonance Fluorescence | We temporally resolve the resonance fluorescence from an electron spin
confined to a single self-assembled quantum dot to measure directly the spin's
optical initialization and natural relaxation timescales. Our measurements
demonstrate that spin initialization occurs on the order of microseconds in the
Faraday configu... | 0908.0292v1 |
2009-08-25 | Spin-Dependent Recombination between Phosphorus Donors in Silicon and Si/SiO2 Interface States Investigated with Pulsed Electrically Detected Electron Double Resonance | We investigate the spin species relevant for the spin-dependent recombination
used for the electrical readout of coherent spin manipulation in
phosphorus-doped silicon. Via a multi-frequency pump-probe experiment in pulsed
electrically detected magnetic resonance, we demonstrate that the dominant
spin-dependent recombi... | 0908.3612v2 |
2009-12-06 | Resonant all-electric spin pumping with spin-orbit coupling | All-electric devices for the generation and filtering of spin currents are of
crucial importance for spintronics experiments and applications. Here we
consider a quantum dot between two metallic leads in the presence of spin-orbit
coupling, and we analyze in the frame of a scattering matrix approach the
conditions for ... | 0912.1096v2 |
2010-03-29 | Sub-optical resolution of single spins using magnetic resonance imaging at room temperature in diamond | There has been much recent interest in extending the technique of magnetic
resonance imaging (MRI) down to the level of single spins with sub-optical
wavelength resolution. However, the signal to noise ratio for images of
individual spins is usually low and this necessitates long acquisition times
and low temperatures ... | 1003.5533v1 |
2010-09-28 | Coherent optical writing and reading of the exciton spin state in single quantum dots | We demonstrate a one to one correspondence between the polarization state of
a light pulse tuned to neutral exciton resonances of single semiconductor
quantum dots and the spin state of the exciton that it photogenerates. This is
accomplished using two variably polarized and independently tuned picosecond
laser pulses.... | 1009.5463v2 |
2011-08-09 | AC Susceptibility and Electron Spin Resonance Studies of Spin Dynamics in n Ba$_3$NbFe$_3$Si$_2$O$_{14}$: A Geometrically Frustrated Lattice | We report ac susceptibility and high-frequency electron spin resonance (ESR)
measurements on the geometrically frustrated compound
Ba$_3$NbFe$_3$Si$_2$O$_{14}$ with the N\'{e}el temperature $T_N=27 K$. An
unusually large frequency-dependence of ac susceptibility in the temperature
range of 20 - 100 K reveals a spin-gla... | 1108.1853v1 |
2011-11-23 | Anisotropic spin relaxation revealed by resonant spin amplification in (110) GaAs quantum wells | We have studied spin dephasing in a high-mobility two-dimensional electron
system (2DES), confined in a GaAs/AlGaAs quantum well grown in the [110]
direction, using the resonant spin amplification (RSA) technique. From the
characteristic shape of the RSA spectra, we are able to extract the spin
dephasing times (SDT) fo... | 1111.5438v2 |
2011-12-15 | Spin transition in LaCoO3 investigated by resonant soft X-ray emission spectroscopy | The spin transition in LaCoO3 is investigated by temperature-dependent
resonant soft X-ray emission spectroscopy near the Co 2p absorption edges. This
element-specific technique is more bulk sensitive with respect to the
temperature induced spin-state of the Co3+ ions in LaCoO3 than other
high-energy spectroscopic meth... | 1112.3406v2 |
2012-03-15 | Resonance Measurement of Nonlocal Spin Torque in a Three-Terminal Magnetic Device | A pure spin current generated within a nonlocal spin valve can exert a spin
transfer torque on a nanomagnet. This nonlocal torque enables new design
schemes for magnetic memory devices that do not require the application of
large voltages across tunnel barriers that can suffer electrical breakdown.
Here we report a qua... | 1203.3266v2 |
2012-03-23 | Spin dynamics in a strongly driven system: very slow Rabi oscillations | We consider joint effects of tunneling and spin-orbit coupling on driven by
electric field spin dynamics in a double quantum dot with a multi-level
resonance scenario. We demonstrate that tunneling plays the crucial role in the
formation of the Rabi-like spin-flip transitions. In contrast to the linear
behavior for wea... | 1203.5287v1 |
2012-07-12 | Spin Damping in an RF Atomic Magnetometer | Under negative feedback, the quality factor Q of a radio-frequency
magnetometer can be decreased by more than two orders of magnitude, so that any
initial perturbation of the polarized spin system can be rapidly damped,
preparing the magnetometer for detection of the desired signal. We find that
noise is also suppresse... | 1207.2842v1 |
2013-01-21 | Spin-orbit-induced bound state and molecular signature of the degenerate Fermi gas in a narrow Feshbach resonance | In this paper we explore the spin-orbit-induced bound state and molecular
signature of the degenerate Fermi gas in a narrow Feshbach resonance based on a
generalized two-channel model. Without the atom-atom interactions, only one
bound state can be found even if spin-orbit coupling exists. Moreover, the
corresponding b... | 1301.4718v2 |
2013-05-05 | Cavity cooling of an ensemble spin system | We describe how sideband cooling techniques may be applied to large spin
ensembles in magnetic resonance. Using the Tavis-Cummings model in the presence
of a Rabi drive, we solve a Markovian master equation describing the joint
spin-cavity dynamics to derive cooling rates as a function of ensemble size.
Our calculation... | 1305.1029v2 |
2013-08-15 | Detection of the microwave spin pumping using the inverse spin Hall effect | We report electrical detection of the dynamical part of the spin pumping
current emitted during ferromagnetic resonance (FMR) using the inverse Spin
Hall Effect (ISHE). The experiment is performed on a YIG$|$Pt bilayer. The
choice of YIG, a magnetic insulator, ensures that no charge current flows
between the two layers... | 1308.3433v2 |
2013-09-22 | Low temperature MQ NMR dynamics in dipolar ordered state | We investigate analytically and numerically the Multiple Quantum (MQ) NMR
dynamics in dipolar ordered spin systems of nuclear spins 1/2 at a low
temperatures. We suggest two different methods of MQ NMR. One of them is based
on the measurement of the dipolar energy. The other method uses an additional
resonance ({\pi}/4... | 1309.5591v1 |
2013-11-06 | Magnetization dynamics of cobalt grown on graphene | Ferromagnetic resonance (FMR) spin pumping is a rapidly growing field which
has demonstrated promising results in a variety of material systems. This
technique utilizes the resonant precession of magnetization in a ferromagnet to
inject spin into an adjacent non-magnetic material. Spin pumping into graphene
is attracti... | 1311.1441v1 |
2013-12-18 | Spin-Orbit Qubit on a Multiferroic Insulator in a Superconducting Resonator | We propose a spin-orbit qubit in a nanowire quantum dot on the surface of a
multiferroic insulator with a cycloidal spiral magnetic order. The spiral
exchange field from the multiferroic insulator causes an inhomogeneous
Zeeman-like interaction on the electron spin in the quantum dot, producing a
spin-orbit qubit. The ... | 1312.5159v2 |
2014-03-13 | Fast Room-Temperature Phase Gate on a Single Nuclear Spin in Diamond | Nuclear spins support long lived quantum coherence due to weak coupling to
the environment, but are difficult to rapidly control using nuclear magnetic
resonance (NMR) as a result of the small nuclear magnetic moment. We
demonstrate a fast ~ 500 ns nuclear spin phase gate on a 14N nuclear spin qubit
intrinsic to a nitr... | 1403.3311v2 |
2014-03-13 | Resolved sidebands in a strain-coupled hybrid spin-oscillator system | We report on single electronic spins coupled to the motion of mechanical
resonators by a novel mechanism based on crystal strain. Our device consists of
single-crystalline diamond cantilevers with embedded Nitrogen-Vacancy center
spins. Using optically detected electron spin resonance, we determine the
unknown spin-str... | 1403.3405v1 |
2014-03-27 | Tight-binding simulations of electrically driven spin-valley transitions in carbon nanotube quantum dots | We describe dynamics of spin and valley transitions driven by alternating
electric fields in quantum dots defined electrostatically within semiconducting
carbon nanotubes (CNT). We use the tight-binding approach to describe the
states localized within a quantum dot taking into account the circumferential
spin-orbit int... | 1403.6970v3 |
2014-09-30 | Current-induced spin torque resonance of magnetic insulators affected by field-like spin-orbit torques and out-of-plane magnetizations | The spin-torque ferromagnetic resonance (ST-FMR) in a bilayer system
consisting of a magnetic insulator such as Y3Fe5O12 and a normal metal with
spin-orbit interaction such as Pt is addressed theoretically. We model the
ST-FMR for all magnetization directions and in the presence of field-like
spin-orbit torques based o... | 1409.8406v2 |
2015-02-12 | Anti-damping spin transfer torque through epitaxial Nickel oxide | We prepare the high quality epitaxial
MgO(001)[100]/Pt(001)[100]/NiO(001)[100]/FeNi/SiO2 films to investigate the
spin transport in the NiO antiferromagnetic insulator. The ferromagnetic
resonance measurements of the FeNi under a spin current injection from the Pt
by the spin Hall effect revealed the change of the ferr... | 1502.03855v1 |
2015-08-12 | Spin orbit splitting of the photon induced Fano Resonance in an oscillating graphene electrostatic barrier | We investigate theoretically the effect of a time dependent oscillating
potential on the transport property of the Dirac Fermion through a monolayer
graphene electrostatic barrier under the influence of the Rashba spin orbit
interaction. The time dependent problem is solved in the frame work of the non
perturbative Flo... | 1508.02888v1 |
2016-04-24 | Who pumps spin current into nonmagnetic-metal (NM) layer in YIG/NM multilayers at ferromagnetic resonance? | Spin pumping in Yttrium-iron-garnet (YIG)/nonmagnetic-metal (NM) layer
systems under ferromagnetic resonance (FMR) conditions is a popular method of
generating spin current in the NM layer. A good understanding of the spin
current source is essential in extracting spin Hall angle of the NM and in
potential spintronics ... | 1604.07025v1 |
2017-08-06 | Asymmetric Andreev resonant state with a magnetic exchange field in spin-triplet superconducting monolayer $MoS_2$ | Featuring spin-valley degree of freedom by a magnetic exchange
field-induction to gain transport of charge carriers through a junction based
on superconducting subgap tunneling can provide a new scenario for future
electronics. Transmission of low-energy Dirac-like electron (hole)
quasiparticles through a ferromagnet/s... | 1708.01863v1 |
2017-09-07 | Tunable spin pumping in exchange coupled magnetic trilayers | Magnetic thin films at ferromagnetic resonance (FMR) leak angular momentum,
which may be absorbed by adjacent layers. This phenomenon, known as spin
pumping, is manifested by an increase in the resonance linewidth ($\Delta H$),
and the closely related Gilbert damping. Another effect of this transfer of
spin currents is... | 1709.02295v1 |
2019-11-03 | Magnetic damping modulation in $IrMn_{3}/Ni_{80}Fe_{20}$ via the magnetic spin Hall effect | Non-collinear antiferromagnets can have additional spin Hall effects due to
the net chirality of their magnetic spin structure, which provides for more
complex spin-transport phenomena compared to ordinary non-magnetic materials.
Here we investigated how ferromagnetic resonance of permalloy
($Ni_{80}Fe_{20}$) is modula... | 1911.00943v1 |
2017-05-16 | Theory of electron spin resonance in one-dimensional topological insulators with spin-orbit couplings | Edge/surface states often appear in a topologically nontrivial phase, when
the system has a boundary. The edge state of a one-dimensional topological
insulator is one of the simplest examples. Electron Spin Resonance (ESR) is an
ideal probe to detect and analyze the edge state for its high sensitivity and
precision. We... | 1705.05826v3 |
2017-05-17 | Quantum criticality in the coupled two-leg spin ladder Ba2CuTeO6 | We report on zero-field muon spin rotation, electron spin resonance and
polarized Raman scattering measurements of the coupled quantum spin ladder
Ba2CuTeO6. Zero-field muon spin rotation and electron spin resonance probes
disclose a successive crossover from a paramagnetic through a spin-liquid-like
into a magneticall... | 1705.06035v1 |
2018-07-13 | Dynamical decoupling of interacting dipolar spin ensembles | We demonstrate that CPMG and XYXY decoupling sequences with non-ideal $\pi$
pulses can reduce dipolar interactions between spins of the same species in
solids. Our simulations of pulsed electron spin resonance (ESR) experiments
show that $\pi$ rotations with small ($<$~10\%) imperfections refocus
instantaneous diffusio... | 1807.04908v1 |
2012-09-03 | Dynamical Jahn-Teller Effect in Spin-Orbital Coupled System | Dynamical Jahn-Teller (DJT) effect in a spin-orbital coupled system on a
honeycomb lattice is examined, motivated from recently observed spin-liquid
behavior in Ba$_3$CuSb$_2$O$_9$. An effective vibronic Hamiltonian, where the
superexchange interaction and the DJT effect are taken into account, is
derived. We find that... | 1209.0239v2 |
2020-03-04 | Programmable two-qubit gates in capacitively coupled flopping-mode spin qubits | Recent achievements in the field of gate defined semiconductor quantum dots
reinforce the concept of a spin-based quantum computer consisting of nodes of
locally connected qubits which communicate with each other via superconducting
circuit resonator photons. In this work we theoretically demonstrate a
versatile set of... | 2003.02137v3 |
2020-03-10 | Dynamics of a two-dimensional quantum spin-orbital liquid: spectroscopic signatures of fermionic magnons | We provide an exact study of dynamical correlations for the quantum
spin-orbital liquid phases of an SU(2)-symmetric Kitaev honeycomb lattice
model. We show that the spin dynamics in this Kugel-Khomskii type model is
exactly the density-density correlation function of S=1 fermionic magnons,
which could be probed in res... | 2003.04835v3 |
2021-08-03 | Unusual spin pseudogap behavior in the spin web lattice Cu$_3$TeO$_6$ probed by $^{125}$Te nuclear magnetic resonance | We present a $^{125}$Te nuclear magnetic resonance (NMR) study in the
three-dimensional spin web lattice Cu$_3$TeO$_6$, which harbors topological
magnons. The $^{125}$Te NMR spectra and the Knight shift $\mathcal{K}$ as a
function of temperature show a drastic change at $T_\text{S}\sim 40$ K much
lower than the N\'eel ... | 2108.01288v1 |
2019-01-03 | Detecting Spin Transport in Quantum Magnets with Photons | A minimally invasive technique is proposed for detecting the differential
spin conductance and spin current noise across a junction between two quantum
magnets using a high-quality microwave resonator coupled to a transmission line
which is impedance matched to a photon detector downstream. Photons in the
microwave res... | 1901.00933v2 |
2019-07-04 | Electron spin resonance study of spin relaxation in the strong-leg spin ladder with nonmagnetic dilution | We have studied electron spin resonance (ESR) absorption spectra for the
nonmagnetically diluted strong-leg spin ladder magnet
({C}$_{7}$H$_{10}$N)$_{2}$Cu$_{(1-x)}$Zn$_{x}$Br$_{4}$ (abbreviated as DIMPY)
down to 450 mK. Formation of the clusters with non-zero net magnetization is
confirmed; the cluster-cluster interac... | 1907.02284v2 |
2020-07-20 | Regulating spin dynamics of graphene flakes | A method of regulating spin dynamics of the so-called magnetic graphene is
analyzed. Magnetic moments can be incorporated into graphene flakes and
graphene ribbons through defects, such as adatoms and vacancies. Local spins
can also be attached to graphene at hydrogenated zigzag edges. Spin flips can
be produced by tra... | 2007.10217v1 |
2020-10-18 | Quantifying power flow processes mediated by spin currents | The power flow process mediated by spin current in the bilayer device
consisting of ferromagnetic metal (FM) and non-magnetic metal (NM) layers is
examined by realizing experimental evaluations for each process from the
microwave absorption to electromotive force (EMF) output. The absorption power
by ferromagnetic reso... | 2010.08997v3 |
2021-12-08 | Giant Resonant Self-Blocking in Magnetophononically Driven Quantum Magnets | Magnetophononics, the modulation of magnetic interactions by driven
infrared-active lattice excitations, is emerging as a key mechanism for the
ultrafast dynamical control of both semiclassical and quantum spin systems by
coherent light. We demonstrate that, in a quantum magnetic material with strong
spin-phonon coupli... | 2112.04508v1 |
2021-12-23 | Quantum parameter estimation of nonlinear coupling in trilinear Hamiltonian with trapped ions | I propose an efficient method for measuring non-linear coupling between the
collective axial breathing mode and the radial rocking mode induced by the
mutual Coulomb repulsion in linear ion crystal. The quantum sensing technique
is based on the laser induced coupling between one of the vibrational modes and
the interna... | 2112.12487v1 |
2022-04-01 | Tunable hole spin-photon interaction based on g-matrix modulation | We consider a spin circuit-QED device where a superconducting microwave
resonator is capacitively coupled to a single hole confined in a semiconductor
quantum dot. Thanks to the strong spin-orbit coupling intrinsic to valence-band
states, the gyromagnetic g-matrix of the hole can be modulated electrically.
This modulat... | 2204.00404v3 |
2022-09-22 | Electric Control of Spin Transitions at the Atomic Scale | Electric control of spins has been a longstanding goal in the field of solid
state physics due to the potential for increased efficiency in information
processing. This efficiency can be optimized by transferring spintronics to the
atomic scale. We present electric control of spin resonance transitions in
single molecu... | 2209.10969v1 |
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