Anomalous Rashba spin-orbit interaction in InAs/GaSb quantum wells

Abstract

We investigate theoretically the Rashba spin-orbit interaction in InAs/GaSb quantum wells(QWs). We find that the Rashba spin-splitting (RSS) depends sensitively on the thickness of the InAs layer. The RSS exhibits nonlinear behavior for narrow InAs/GaSb QWs and the oscillating feature for wide InAs/GaSb QWs. The nonlinear and oscillating behaviors arise from the weakened and enhanced interband coupling. The RSS also show asymmetric features respect to the direction of the external electric field.

3 pages, 4 figures. Appl. Phys. Lett. (in press)

References in corpus (2)

• Rashba spin splitting in biased semiconductor quantum wells
• Electric field inversion asymmetry: Rashba and Stark effects for holes in resonant tunneling devices

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