Charge transport by modulating spin-orbit gauge fields for quasi-onedimensional holes

Details Charge transport by modulating spin-orbit gauge fields for quasi-onedimensional holes Charge transport by modulating spin-orbit gauge fields for quasi-onedimensional holes

2011-04-23

arxiv.org/abs/1104.4520v1

Appl. Phys. Lett. 98, 152101 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures, RevTex4.1

Scientific paper

10.1063/1.3579197

We present a theoretical study of ac charge transport arising from adiabatic temporal variation of zero-field spin splitting in a quasi-onedimensional hole system (realized, e.g., in a quantum wire or point contact). As in conduction-electron systems, part of the current results from spin-dependent electromotive forces. We find that the magnitude of this current contribution is two orders of magnitude larger for holes and exhibits parametric dependences that make it more easily accessible experimentally. Our results suggest hole structures to be good candidates for realizing devices where spin currents are pumped by time-varying electric fields.

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