TY - JOUR
T1 - Strain-induced fermi contour anisotropy of GaAs 2D holes
AU - Shabani, J.
AU - Shayegan, M.
AU - Winkler, R.
PY - 2008/3/7
Y1 - 2008/3/7
N2 - We report measurements of magnetoresistance commensurability peaks, induced by a square array of antidots, 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.
AB - We report measurements of magnetoresistance commensurability peaks, induced by a square array of antidots, 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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U2 - 10.1103/PhysRevLett.100.096803
DO - 10.1103/PhysRevLett.100.096803
M3 - Article
C2 - 18352742
AN - SCOPUS:40849106648
SN - 0031-9007
VL - 100
JO - Physical review letters
JF - Physical review letters
IS - 9
M1 - 096803
ER -