Determining the spin Hall conductance via charge transport

Details Determining the spin Hall conductance via charge transport Determining the spin Hall conductance via charge transport

2005-03-24

arxiv.org/abs/cond-mat/0503605v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Revtex4, 4 pages and two eps figures

Scientific paper

10.1103/PhysRevB.72.121310

We propose a scheme where transport measurements of charge current and its noise can be used to determine the spin Hall conductance in a four-terminal setup. Starting from the scattering formalism we express the spin current and spin Hall conductance in terms of spin-dependent transmission coefficients. These coefficients are then expressed in terms of charge current and noise. We use the scheme to characterize the spin injection efficiency of a ferromagnetic/semiconductor interface.

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