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Anisotropic Fermi contour of (001) GaAs holes in parallel magnetic fields

Author(s): Kamburov, D; Shayegan, Mansour; Winkler, R; Pfeiffer, LN; West, KW; et al

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Abstract: We report a severe, spin-dependent, Fermi contour anisotropy induced by parallel magnetic field in a high-mobility (001) GaAs two-dimensional hole system. Employing commensurability oscillations created by a unidirectional, surface-strain-induced, periodic potential modulation, we directly probe the anisotropy of the two spin subband Fermi contours. Their areas are obtained from the Fourier transform of the Shubnikov-de Haas oscillations. Our findings are in semiquantitative agreement with the results of parameter-free calculations of the energy bands.
Publication Date: Dec-2012
Electronic Publication Date: 13-Dec-2012
Citation: Kamburov, D, Shayegan, M, Winkler, R, Pfeiffer, LN, West, KW, Baldwin, KW. (2012). Anisotropic Fermi contour of (001) GaAs holes in parallel magnetic fields. Physical Review B, 86 (24), 10.1103/PhysRevB.86.241302
DOI: doi:10.1103/PhysRevB.86.241302
ISSN: 1098-0121
EISSN: 1550-235X
Type of Material: Journal Article
Journal/Proceeding Title: Physical Review B
Version: Author's manuscript

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