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

D. Kamburov; M. Shayegan; R. Winkler; L. N. Pfeiffer; K. W. West; K. W. Baldwin

doi:10.1103/PhysRevB.86.241302

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

D. Kamburov, M. Shayegan, R. Winkler, L. N. Pfeiffer, K. W. West, K. W. Baldwin

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19 Scopus citations

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.

Original language	English (US)
Article number	241302
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	86
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevB.86.241302
State	Published - Dec 13 2012

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.86.241302

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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.",

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AU - Kamburov, D.

AU - Shayegan, M.

AU - Winkler, R.

AU - Pfeiffer, L. N.

AU - West, K. W.

AU - Baldwin, K. W.

PY - 2012/12/13

Y1 - 2012/12/13

N2 - 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.

AB - 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.

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JF - Physical Review B - Condensed Matter and Materials Physics

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ER -

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

Abstract

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