Semiclassical spin transport in spin-orbit-coupled systems

Details Semiclassical spin transport in spin-orbit-coupled systems Semiclassical spin transport in spin-orbit-coupled systems

2009-04-13

arxiv.org/abs/0904.1999v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Will appear in Springer Encyclopedia of Complexity and Systems Science

Scientific paper

This article discusses spin transport in systems with spin-orbit interactions and how it can be understood in a semiclassical picture. I will first present a semiclassical wave-packet description of spin transport, which explains how the microscopic motion of carriers gives rise to a spin current. Due to spin non-conservation the definition of the spin current has some arbitrariness. In the second part I will briefly review the physics from a density matrix point of view, which makes clear the relationship between spin transport and spin precession and the important role of scattering.

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