Anisotropic transport of two-dimensional holes in high Landau levels

Abstract Magnetoresistance data taken along [ 2 3 3] and [0 1 1 ] directions in a GaAs/AlGaAs two-dimensional hole sample with van der Pauw geometry exhibit significant anisotropy at half-integer filling factors. The anisotropy appears to depend on both the density and symmetry of the hole charge distribution.