Nonequilibrium transport in density-modulated phases of the second Landau level

S. Baer, C. Rössler, S. Hennel, H. C. Overweg, T. Ihn, K. Ensslin, C. Reichl, and W. Wegscheider
Phys. Rev. B 91, 195414 – Published 12 May 2015
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Abstract

We investigate nonequilibrium transport in the reentrant integer quantum Hall phases of the second Landau level. At high currents, we observe a transition from the reentrant integer quantum Hall phases to classical Hall conduction. Surprisingly, this transition is markedly different for the hole- and electron sides of each spin branch. While the hole bubble phases exhibit a sharp transition to an isotropic compressible phase, the transition for the electron side occurs via an intermediate phase. This might indicate a more complex structure of the bubble phases than currently anticipated, or a breaking of the particle-hole symmetry. Such a symmetry breaking in the second Landau level might also have consequences for the physics at filling factor ν=5/2.

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  • Received 15 December 2014
  • Revised 20 April 2015

DOI:https://doi.org/10.1103/PhysRevB.91.195414

©2015 American Physical Society

Authors & Affiliations

S. Baer*, C. Rössler, S. Hennel, H. C. Overweg, T. Ihn, K. Ensslin, C. Reichl, and W. Wegscheider

  • Solid State Physics Laboratory, ETH Zürich, 8093 Zürich, Switzerland

  • *Author to whom correspondence should be addressed: sbaer@phys.ethz.ch

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Vol. 91, Iss. 19 — 15 May 2015

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