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Signatures of spin-preserving symmetries in two-dimensional hole gases

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arxiv 1304.7747 v2 pith:5ORPV6PE submitted 2013-04-29 cond-mat.mes-hall cond-mat.dis-nn

Signatures of spin-preserving symmetries in two-dimensional hole gases

Tobias Dollinger , Michael Kammermeier , Andreas Scholz , Paul Wenk , R. Winkler , John Schliemann , Klaus Richter This is my paper
classification cond-mat.mes-hall cond-mat.dis-nn
keywords gasesholespinspin-preservingsymmetrytwo-dimensionalweakanalogous
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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. For heavy-hole subbands we identify an exact spin-preserving symmetry analogous to the electronic case by analyzing the crossover from weak antilocalization to weak localization and spin transmission as a function of extrinsic spin-orbit interaction strength.

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