Universal Intrinsic Spin Hall Effect

作者：Jairo Sinova, Dimitrie Culcer, Q. Niu, Nikolai A. Sinitsyn, Tomas Jungwirth, Allan H. MacDonald · 发表于：Physical Review Letters · 年份：2004 · DOI：10.1103/physrevlett.92.126603 · 被引用次数：2172 · 研究领域：Quantum and electron transport phenomena、Physics of Superconductivity and Magnetism、Electronic and Structural Properties of Oxides

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 intrinsic spin-Hall conductivity has a universal value for zero quasiparticle spectral broadening.