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 (2)

• Direct electronic measurement of the spin Hall effect
• Pure spin current from one-photon absorption of linearly polarized light in noncentrosymmetric semiconductors

Cited by in corpus (11)

• Observation of electric current induced by optically injected spin current
• 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
• 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