Phys. Rev. Lett. 98, 206804 (2007) [4 pages]Impact of Spin-Orbit Coupling on Quantum Hall Nematic PhasesReceived 6 February 2007; published 16 May 2007 Anisotropic charge transport is observed in a two-dimensional (2D) hole system in a perpendicular magnetic field at filling factors ν=7/2, ν=11/2, and ν=13/2 at low temperature. In stark contrast, the transport at ν=9/2 is isotropic for all temperatures. Isotropic hole transport at ν=7/2 is restored for sufficiently low 2D densities or an asymmetric confining potential. The density and symmetry dependences of the observed anisotropies suggest that strong spin-orbit coupling in the hole system contributes to the unusual transport behavior. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.98.206804
DOI:
10.1103/PhysRevLett.98.206804
PACS:
73.43.Qt, 72.25.Dc
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