Deduction of Pure Spin Current from Spin Linear and Circular Photogalvanic Effect in Semiconductor Quantum Wells

Abstract

We study the spin photogalvanic effect in two-dimensional electron system with structure inversion asymmetry by means of the solution of semiconductor optical Bloch equations. It is shown that a linearly polarized light may inject a pure spin current in spin-splitting conduction bands due to Rashba spin-orbit coupling, while a circularly polarized light may inject spin-dependent photocurrent. We establish an explicit relation between the photocurrent by oblique incidence of a circularly polarized light and the pure spin current by normal incidence of a linearly polarized light such that we can deduce the amplitude of spin current from the measured spin photocurrent experimentally. This method may provide a source of spin current to study spin transport in semiconductors quantitatively.

References in corpus (11)

• Direct electronic measurement of the spin Hall effect
• Experimental observation of the spin-Hall effect in a two dimensional spin-orbit coupled semiconductor system
• Anomalous Rashba spin splitting in two-dimensional hole systems
• Pure spin current from one-photon absorption of linearly polarized light in noncentrosymmetric semiconductors
• Circular photogalvanic effect induced by monopolar spin orientation in p-GaAs/AlGaAs MQW
• Charge Hall effect driven by spin-dependent chemical potential gradients and Onsager relations in mesoscopic systems
• Pure spin photocurrents in low-dimensional structures
• Electron and Hole Spin Splitting and Photogalvanic Effect in Quantum Wells
• Generation of spin currents via Raman scattering
• Transverse electric current induced by optically injected spin current in cross-shaped InGaAs/InAlAs system
• Optical response and spin relaxation in semiconductor systems under excitation with arbitrary polarization

Cited by in corpus (15)

• Helicity dependent photocurrent in electrically gated (Bi,Sb)_2Te_3 thin films
• An Anomalous Circular Photogalvanic Effect in the Weyl Semimetal TaAs
• Observation of electric current induced by optically injected spin current
• Optical Spintronics in Organic-Inorganic Perovskite Photovoltaics
• Quantum dissipative Rashba spin ratchets
• Optical manipulation of Rashba-split 2-Dimensional Electron Gas
• Switchable enhanced spin photocurrent in Rashba and cubic Dresselhaus ferroelectric semiconductors
• Crystal Symmetry Selected Pure Spin Photocurrent in Altermagnetic Insulators
• Manipulating the spin texture in spin-orbit superlattice by terahertz radiation
• Magneto-electric photocurrent generated by direct inter-band transitions in InGaAs/InAlAs two-dimensional electron gas
• Enhanced circular photogalvanic effect in HgTe quantum wells in the heavily inverted regime
• Interplay between quantum dissipation and an in-plane magnetic field in the spin ratchet effect
• Anomalous Cherenkov spin-orbit sound
• Light-induced Nonlinear Spin Hall Current in Single-layer WTe${}_2$
• Theory of magnetoelectric photocurrent generated by direct interband transitions in semiconductor quantum well