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arXiv · 1109.3808

Reentrant nu = 1 quantum Hall state in a two-dimensional hole system

A. L. Graninger·D. Kamburov·M. Shayegan·L. N. Pfeiffer·K. W. West·K. W. Baldwin·R. Winkler
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Abstract

We report the observation of a reentrant quantum Hall state at the Landau level filling factor nu = 1 in a two-dimensional hole system confined to a 35-nm-wide (001) GaAs quantum well. The reentrant behavior is characterized by a weakening and eventual collapse of the nu = 1 quantum Hall state in the presence of a parallel magnetic field component B||, followed by a strengthening and reemergence as B|| is further increased. The robustness of the nu = 1 quantum Hall state during the transition depends strongly on the charge distribution symmetry of the quantum well, while the magnitude of B|| needed to invoke the transition increases with the total density of the system.

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A. L. Graninger, D. Kamburov, M. Shayegan, L. N. Pfeiffer, K. W. West, K. W. Baldwin, R. Winkler. 2011-09-17. Reentrant nu = 1 quantum Hall state in a two-dimensional hole system. https://doi.org/10.1103/physrevlett.107.176810

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