Tuesday, April 30, 2013

1304.7747 (Tobias Dollinger et al.)

Signatures of spin-preserving symmetries in two-dimensional hole gases    [PDF]

Tobias Dollinger, Andreas Scholz, Paul Wenk, R. Winkler, John Schliemann, Klaus Richter
We investigate ramifications of the persistent spin helix symmetry in two-dimensional hole gases in the conductance of disordered mesoscopic systems. To this end we extend previous models by going beyond the axial approximation for III-V semiconductors. We identify for heavy-hole subbands an exact spin-preserving symmetry analogous to the electronic case by analyzing the crossover from weak anti-localization to weak localization and spin transmission as a function of extrinsic spin-orbit interaction strength.
View original: http://arxiv.org/abs/1304.7747

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