Lu, Jian Ping and Yau, Jeng-Bang and Shukla, S. and Shayegan, M. and Wissinger, L. and Rössler, Ulrich and Winkler, R. (1998) Tunable spin-splitting and spin-resolved ballistic transport in GaAs/AlGaAs two-dimensional hole gas. Physical Review Letters 81 (6), pp. 1282-1285.
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Other URL: http://link.aps.org/abstract/PRL/v81/p1282
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 asymmetric potentials. In the triangular well, when the spin splitting is sufficiently large, our measured commensurability oscillations, induced by a one-dimensional periodic potential, exhibit two frequencies providing clear evidence for spin-resolved ballistic transport.
|Institutions:||Physics > Institute of Theroretical Physics > Retired Professors > Group Ulrich Rössler|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||20 Mar 2007|
|Last Modified:||20 Jul 2011 20:55|