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.
@article{arxiv.1412.4702,
title = {Nonequilibrium transport in density-modulated phases of the second Landau level},
author = {S. Baer and C. Rössler and S. Hennel and H. C. Overweg and T. Ihn and K. Ensslin and C. Reichl and W. Wegscheider},
journal= {arXiv preprint arXiv:1412.4702},
year = {2015}
}
Comments
11 pages Supplemental Material available at http://link.aps.org/supplemental/10.1103/PhysRevB.91.195414