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Tunable spin-splitting and spin-resolved ballistic transport in GaAs/AlGaAs two-dimensional hole gas

Lu, Jian Ping ; Yau, Jeng-Bang ; Shukla, S. ; Shayegan, M. ; Wissinger, L. ; Rössler, Ulrich ; Winkler, R.
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Date of publication of this fulltext: 05 Aug 2009 13:28


Abstract

We report quantitative experimental and theoretical results revealing the tunability of spin splitting in high-mobility two-dimensional GaAs hole systems, confined to either a square or a triangular quantum well, via the application of a surface-gate bias. The spin splitting depends on both the hole density and the symmetry of the confinement potential and is largest for the highest densities in ...

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