Imaging spin flows in semiconductors subject to electric, magnetic, and strain fields

Abstract

Using scanning Kerr microscopy, we directly acquire two-dimensional images of spin-polarized electrons flowing laterally in bulk epilayers of n:GaAs. Optical injection provides a local dc source of polarized electrons, whose subsequent drift and/or diffusion is controlled with electric, magnetic, and - in particular - strain fields. Spin precession induced by controlled uniaxial stress along the <110> axes demonstrates the direct k-linear spin-orbit coupling of electron spin to the shear (off-diagonal) components of the strain tensor.

arXiv comment5 pages, 5 color figures

References in corpus (4)

• Spintronics: Fundamentals and applications
• Non-ballistic spin field-effect transistor
• Current induced electron spin polarization in strained semiconductors
• Non-magnetic semiconductor spin transistor

Cited by in corpus (86)

• Semiconductor Spintronics
• Spin dynamics in semiconductors
• Measurement of Rashba and Dresselhaus spin-orbit magnetic fields
• Graphene with Structure-Induced Spin-Orbit Coupling: Spin-Polarized States, Spin Zero Modes, and Quantum Hall Effect
• Direct mapping of the formation of a persistent spin helix: Supplementary information
• Current-Induced Polarization and the Spin Hall Effect at Room Temperature
• Shear-induced spin polarization in heavy-ion collisions
• Imaging mesoscopic spin Hall flow: Spatial distribution of local spin currents and spin densities in and out of multiterminal spin-orbit coupled semiconductor nanostructures
• Spin polarization induced by the hydrodynamic gradients
• Pump-Probe Faraday Rotation and Ellipticity in an Ensemble of Singly Charged Quantum Dots
• Spin-orbit coupling and spin transport
• Spin relaxation in a generic two-dimensional spin-orbit coupled system
• Oscillatory multiband dynamics of free particles: The ubiquity of zitterbewegung effects
• Coherent spin dynamics of electrons and excitons in nanostructures
• Generation of spin currents and spin densities in systems with reduced symmetry
• Ambipolar spin diffusion and D'yakonov-Perel' spin relaxation in GaAs quantum wells
• Doppler velocimetry of spin propagation in a two-dimensional electron gas
• Imaging charge and spin diffusion of minority carriers in GaAs
• Current-controlled Spin Precession of Quasi-Stationary Electrons in a Cubic Spin-Orbit Field
• Spin lifetimes and strain-controlled spin precession of drifting electrons in zinc blende type semiconductors
• Magnetic focusing of charge carriers from spin-split bands: Semiclassics of a Zitterbewegung effect
• Effects of strain, electric, and magnetic fields on lateral electron spin transport in semiconductor epilayers
• Electrical initialization of electron and nuclear spins in a single quantum dot at zero magnetic field
• Large variations in the hole spin splitting of quantum-wire subband edges
• Spin transference and magnetoresistance amplification in a transistor
• Bias-dependent electron spin lifetimes in n-GaAs and the role of donor impact ionization
• Two-dimensional imaging of the spin-orbit effective magnetic field
• Time-resolved and continuous-wave optical spin pumping of semiconductor quantum wells
• Optical spin pumping of modulation doped electrons probed by a two-color Kerr rotation technique
• Mapping spin-orbit splitting in strained InGaAs epilayers
• Tuning of the spin-orbit interaction in two-dimensional GaAs holes via strain
• Spin diffusion/transport in $n$-type GaAs quantum wells
• Mechanical control of spin-orbit splitting in GaAs and InGaAs epilayers
• Spin-dependent optical properties in strained silicon and germanium
• Ultrafast supercontinuum fiber-laser based pump-probe scanning MOKE microscope for the investigation of electron spin dynamics in semiconductors at cryogenic temperatures with picosecond time and micrometer spatial resolution
• Spatial Imaging and Mechanical Control of Spin Coherence in Strained GaAs Epilayers
• Optical and electrical spin injection and spin transport in hybrid Fe/GaAs devices
• Spin orientation of a two-dimensional electron gas by a high-frequency electric field
• A Scanning, All-Fiber Sagnac Interferometer for High Resolution Magneto-Optic Measurements at 820 nm
• Spin polarization, dephasing and photoinduced spin diffusion in (110)-grown two-dimensional electron systems
• Macroscopic transverse drift of long current-induced spin coherence in two-dimensional electron gases
• Bulk electron spin polarization generated by the spin Hall current
• Multi-valley spin relaxation in the presence of high in-plane electric fields in $n$-type GaAs quantum wells
• Nanosecond spin-transfer over tens of microns in a bare GaAs/AlGaAs layer
• Diffusion and transport of spin pulses in an $n$-type semiconductor quantum well
• Unambiguous determination of spin dephasing times in ZnO
• Two-dimensional optical control of electron spin orientation by linearly polarized light in InGaAs
• Optical detection of long electron spin transport lengths in a monolayer semiconductor
• Kinetics of spin coherence of electrons in $n$-type InAs quantum wells under intense terahertz laser fields
• Influence of surface-related strain and electric field on acceptor wave functions in Zincblende semiconductors
• The new high field photoexcitation muon spectrometer at the ISIS pulsed neutron and muon source
• Relaxation of Electron Spin during High-Field Transport in GaAs Bulk
• Nonequilibrium spin transport on Au(111) surfaces
• Electron beam formation from spin-orbit interactions in zincblende semiconductor quantum wells
• Spin Control of Drifting Electrons using Local Nuclear Polarization in Ferromagnet/Semiconductor Heterostructures
• Control of Spin Relaxation Anisotropy by Spin-Orbit-Coupled Diffusive Spin Motion
• Anisotropic spin relaxation in $n$-GaAs from strong inhomogeneous hyperfine fields produced by the dynamical polarization of nuclei
• Voigt effect-based wide-field magneto-optical microscope integrated in a pump-probe experimental setup
• Power dependence of pure spin current injection by quantum interference
• Critical role of the sample preparation in experiments using piezoelectric actuators inducing uniaxial or biaxial strains
• Strain-assisted spin manipulating and the discerption of strain-induced spin splitting
• Compact cryogenic Kerr microscope for time-resolved studies of electron spin transport in microstructures
• Measurement of magnetic field induced by spin-accumulated electrons in a FeCoB nanomagnet
• Interferometric detection of spin-polarized transport in the depletion layer of a metal-GaAs Schottky barrier
• Electric Field Modulation of Spin Transport
• Spin polarization control by electric field gradients
• Parametric mechanism of the magnetization reversal as a low-power recording mechanism for MRAM. Measurement of spin-accumulation-induced in-plane magnetic field in a FeB nanomagnet
• Spin polarization oscillations without spin precession: spin-orbit entangled resonances in quasi-one-dimensional spin transport
• Electron spin orientation under in-plane optical excitation in GaAs quantum wells
• Faraday and Kerr rotation due to photoinduced orbital magnetization in two-dimensional electron gas
• Quasi-nondegenerate pump-probe magnetooptical experiment in GaAs/AlGaAs heterostructure based on spectral filtration
• Microscopic theory for the Doppler velocimetry of spin propagation in semiconductor quantum wells
• Controlling the spin orientation of photoexcited electrons by symmetry breaking
• Rashba interferometers: Spin-dependent single and two-electron interference
• Nanospintronics meets relativistic quantum physics: Ubiquity of Zitterbewegung effects
• Fast optical control of spin in semiconductor interfacial structures
• Steady-state spin densities and currents
• Spin currents in a normal two-dimensional electron gas in contact with a spin-orbit interaction region
• Long-lived electron spins in a modulation doped (100) GaAs quantum well
• Tuning spin orbit interaction in high quality gate-defined InAs one-dimensional channels
• Triggering phase-coherent spin packets by pulsed electrical spin injection across an Fe/GaAs Schottky barrier
• Predicting and understanding diffusion lengths and lifetimes in solids via a many-body \textit{ab initio} method: The role of coupled dynamics
• Time-resolved lateral spin-caloric transport of optically generated spin packets in n-GaAs
• Luminescence imaging of photoelectron spin precession during drift in p-type GaAs
• Probing early-time longitudinal dynamics with the $\Lambda$ hyperon's spin polarization in relativistic heavy-ion collisions
• Strong spin relaxation length dependence on electric field gradients