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

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Dollinger, Tobias ; Scholz, Andreas ; Wenk, Paul ; Winkler, R. ; Schliemann, John ; Richter, Klaus
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Date of publication of this fulltext: 03 May 2013 12:25


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 ...


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