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SYMS: Magnetic Switching
SYMS 2: Magnetic Switching II
SYMS 2.1: Hauptvortrag
Montag, 27. März 2006, 17:00–17:20, HSZ 04
Spin-Hall effect in a two-dimensional electron system — •Peter Schwab1, Michael Dzierzawa1, Roberto Raimondi2, and Cosimo Gorini2 — 1Universität Augsburg, Germany — 2Università di Roma Tre, Italy
In a two-dimensional electron gas with spin-orbit coupling an electric field can generate spin currents and spin polarization. We study the problem using the method of quasiclassical Green’s functions. In the clean limit we establish a connection between the spin-Hall conductivity and a Berry phase in momentum space. For disordered systems we calculate spin currents and spin accumulation numerically for a strip connected to a voltage source. Universal spin currents are found in the short-time dynamics, leading to a spin-Hall spin polarization near the edges of the strip.