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Universal Intrinsic Spin-Hall Effect

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arxiv cond-mat/0307663 v2 pith:JB3OIQEV submitted 2003-07-27 cond-mat.mes-hall cond-mat.mtrl-sci

Universal Intrinsic Spin-Hall Effect

classification cond-mat.mes-hall cond-mat.mtrl-sci
keywords spin-orbiteffectintrinsicspin-halluniversalarguebandscase
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We describe a new effect in semiconductor spintronics that leads to dissipationless spin-currents in paramagnetic spin-orbit coupled systems. We argue that in a high mobility two-dimensional electron system with substantial Rashba spin-orbit coupling, a spin-current that flows perpendicular to the charge current is intrinsic. In the usual case where both spin-orbit split bands are occupied, the spin-Hall conductivity has a universal value.

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