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Negative differential Rashba effect in two-dimensional hole systems

B. Habib·E. Tutuc·S. Melinte·M. Shayegan·D. Wasserman·S. A. Lyon·R. Winkler
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Abstract

We demonstrate experimentally and theoretically that two-dimensional (2D) heavy hole systems in single heterostructures exhibit a \emph{decrease} in spin-orbit interaction-induced spin splitting with an increase in perpendicular electric field. Using front and back gates, we measure the spin splitting as a function of applied electric field while keeping the density constant. Our results are in contrast to the more familiar case of 2D electrons where spin splitting increases with electric field.

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B. Habib, E. Tutuc, S. Melinte, M. Shayegan, D. Wasserman, S. A. Lyon, R. Winkler. 2004-09-14. Negative differential Rashba effect in two-dimensional hole systems. https://doi.org/10.1063/1.1806543

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