Reentrant anisotropic phases in a two-dimensional hole system
Manfra, M. J. · Jiang, Z. · Simon, S. H. · Pfeiffer, L. N. · West, K. W. · Sergent, A. M.
الأصل · EN
Anisotropic charge transport is observed in a two-dimensional (2D) hole system in a perpendicular magnetic field at filling factors nu=7/2 and nu=11/2 for temperatures below 150mK. In stark contrast, the transport at nu=9/2 is isotropic for all temperatures. Our results for a two-dimensional hole system differ substantially from 2D electron transport where no anisotropy has been observed at nu=7/2, the strongest anisotropy occurs at nu=9/2, and reentrant behavior is not evident. We attribute this difference to strong spin-orbit coupling in the hole system.
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