Spin-Hall effect in a disordered 2D electron-system

Details Spin-Hall effect in a disordered 2D electron-system Spin-Hall effect in a disordered 2D electron-system

2004-08-11

arxiv.org/abs/cond-mat/0408233v1

Phys. Rev. B 71, 033311 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages

Scientific paper

10.1103/PhysRevB.71.033311

We calculate the spin-Hall conductivity for a two-dimensional electron gas within the self-consistent Born approximation, varying the strength and type of disorder. In the weak disorder limit we find both analytically and numerically a vanishing spin-Hall conductivity even when we allow a momentum dependent scattering. Separating the reactive from the disspative current response, we find the universal value $\sigma^R_{sH} = e/8 \pi$ for the reactive response, which cancels however with the dissipative part $\sigma^D_{sH} = -e/8 \pi$.

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