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arXiv · 0801.3106

Strain-induced Fermi contour anisotropy of GaAs 2D holes

J. Shabani·M. Shayegan·R. Winkler
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Abstract

We report measurements of magneto-resistance commensurability peaks, induced by a square array of anti-dots, in GaAs (311)A two-dimensional holes as a function of applied in-plane strain. The data directly probe the shapes of the Fermi contours of the two spin subbands that are split thanks to the spin-orbit interaction and strain. The experimental results are in quantitative agreement with the predictions of accurate energy band calculations, and reveal that the majority spin-subband has a severely distorted Fermi contour whose anisotropy can be tuned with strain.

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J. Shabani, M. Shayegan, R. Winkler. 2008-01-20. Strain-induced Fermi contour anisotropy of GaAs 2D holes. https://doi.org/10.1103/physrevlett.100.096803

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