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arXiv · 1412.4702

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·W. Wegscheider
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Abstract

We investigate non-equilibrium 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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S. Baer, C. Rössler, S. Hennel, H. C. Overweg, T. Ihn, K. Ensslin, C. Reichl, W. Wegscheider. 2015-06-27. Nonequilibrium transport in density-modulated phases of the second Landau level. https://doi.org/10.1103/physrevb.91.195414

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