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

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dc.creatorZhou, Bin
dc.creatorShen, Shun-Qing
dc.date2006-12-21
dc.date.accessioned2026-07-07T07:50:21Z
dc.date.available2026-07-07T07:50:21Z
dc.descriptionWe 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.
dc.identifierhttps://arxiv.org/abs/cond-mat/0612542
dc.identifierhttp://arxiv.org/abs/cond-mat/0612542
dc.identifierPhys.Rev.B 75,045339 (2007)
dc.identifierdoi:10.1103/PhysRevB.75.045339
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/125135
dc.subjectMesoscale and Nanoscale Physics
dc.titleDeduction of Pure Spin Current from Spin Linear and Circular Photogalvanic Effect in Semiconductor Quantum Wells
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