Spin current injection by intersubband transitions in quantum wells

Abstract

We show that a pure spin current can be injected in quantum wells by the absorption of linearly polarized infrared radiation, leading to transitions between subbands. The magnitude and the direction of the spin current depend on the Dresselhaus and Rashba spin-orbit coupling constants and light frequency and, therefore, can be manipulated by changing the light frequency and/or applying an external bias across the quantum well. The injected spin current should be observable either as a voltage generated via the anomalous spin-Hall effect, or by spatially resolved pump-probe optical spectroscopy.

minor changes, short version published

References in corpus (7)

• Universal Intrinsic Spin-Hall Effect
• Dissipationless Quantum Spin Current at Room Temperature
• Spin-Hall Effect in Two-Dimensional Electron Systems with Rashba Spin-Orbit Coupling and Disorder
• Pumping spin with electrical fields
• Spin Current Generation and Detection in the Presence of AC Gate
• Non-vanishing spin Hall currents in disordered spin-orbit coupling systems
• Electron and Hole Spin Splitting and Photogalvanic Effect in Quantum Wells

Cited by in corpus (28)

• Spin transverse force on spin current in an electric field
• Spin Hall Effect in Atoms
• Spin-orbit coupled cold exciton condensates
• Pure spin photocurrents
• Optical orientation of electron spins by linearly polarized light
• Generation of spin currents via Raman scattering
• Spin and charge optical conductivities in spin-orbit coupled systems
• Spin-photovoltaic effect in quantum wires due to inter-subband transitions
• Orbital Rashba effect as a platform for robust orbital photocurrents
• Transverse electric current induced by optically injected spin current in cross-shaped InGaAs/InAlAs system
• Photoinduced pure spin current injection in graphene with Rashba spin-orbit interaction
• Ultrafast extrinsic spin-Hall currents
• Charge and spin photocurrents in the Rashba model
• Interplay of the Rashba and Dresselhaus spin-orbit coupling in the optical spin susceptibility of 2D electron systems
• Anomalous spin Hall effects in Dresselhaus (110) quantum wells
• Terahertz radiation-induced conductivity, Kerr and Faraday angles, and spin textures in a two-dimensional electron gas with spin-orbit coupling subjected to a high magnetic field and periodic potential
• Spin force and the generation of sustained spin current in time-dependent Rashba and Dresselhauss systems
• Laser-induced charge and spin photocurrents at BiAg${}_2$ surface: a first principles benchmark
• Spin torque contribution to the a.c. spin Hall conductivity
• Seebeck effects in two-dimensional spin transistors
• Intersubband polaritons with spin-orbit interaction
• Spin currents of exciton polaritons in a microcavity with (110)-oriented quantum well
• Photocurrents of charge and spin in single-layer Fe${}_3$GeTe${}_2$
• Electronic structure and transport for a laser-field-irradiated quantum wire with Rashba spin-orbit coupling
• Nonlinear spin Hall effect in GaAs (110) quantum wells
• Spin transverse force and quantum transverse transport
• Strong electron spin-Hall effect by a coherent optical potential
• Spin-dependent transport of carriers in semiconductors