Journal
APPLIED PHYSICS LETTERS
Volume 88, Issue 16, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.2196230
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We examine the electric response of a linearly polarized light normally shed on a cross-shaped quasi-two-dimensional InGaAs/InAlAs system with structure inversion asymmetry. The photoexcited conduction electrons carry a pure spin current with in-plane spin polarization due to the Rashba spin-orbit interaction. We use the Landauer-Buttiker formalism to show that this spin current induces two inward or outward transverse charge currents, which are observable in experiments. This effect may serve as an experimental probe of certain types of spin current. (c) 2006 American Institute of Physics.
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