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

作者：Baer S^*; Roessler C; Hennel S; Overweg H C; Ihn T; Ensslin K; Reichl C; Wegscheider W

来源：Physical Review B, 2015, 91(19): 195414.

DOI：10.1103/PhysRevB.91.195414

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 nu = 5/2.

• 出版日期2015-5-12