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  • Title: Reentrant ν=1 quantum Hall state in a two-dimensional hole system.
    Author: Graninger AL, Kamburov D, Shayegan M, Pfeiffer LN, West KW, Baldwin KW, Winkler R.
    Journal: Phys Rev Lett; 2011 Oct 21; 107(17):176810. PubMed ID: 22107562.
    Abstract:
    We report the observation of a reentrant quantum Hall state at the Landau level filling factor ν=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 ν=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 ν=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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