U. Wieser, U. Kunze, et al.
Physica E: Low-Dimensional Systems and Nanostructures
Paper
Anisotropic transport of two-dimensional holes in high Landau levels
Abstract
Qualitatively similar anomalies in a high-mobility GaAs/AlGaAs 2D hole system (2DHS) are presented. Magnetoresistance data taken along [233] and [011] directions in a GaAs/AlGaAs 2D hole sample with van der Pauw geometry exhibit significant anisotropy at half-integer filling factors. The anisotropy depend on both the density and symmetry of the hole charge distribution.
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