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

Article

关键词: 2-DIMENSIONAL ELECTRON-GAS;    ONE-DIMENSIONAL SUPERLATTICE;    MAGNETORESISTANCE OSCILLATIONS;    ENVELOPE;    SPIN;    DISPERSION;    SYSTEMS;   

DOI  :  10.1103/PhysRevB.86.241302

来源: SCIE

【 摘 要 】

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. DOI: 10.1103/PhysRevB.86.241302

【 授权许可】

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