Interlayer Coherence in the $ν=1$ and $ν=2$ Bilayer Quantum Hall States

Details Interlayer Coherence in the $ν=1$ and $ν=2$ Bilayer Quantum Hall States Interlayer Coherence in the $ν=1$ and $ν=2$ Bilayer Quantum Hall States

1998-12-04

arxiv.org/abs/cond-mat/9812064v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages including 5 figures

Scientific paper

10.1103/PhysRevB.59.14888

We have measured the Hall-plateau width and the activation energy of the bilayer quantum Hall (BLQH) states at the Landau-level filling factor $\nu=1$ and 2 by tilting the sample and simultaneously changing the electron density in each quantum well. The phase transition between the commensurate and incommensurate states are confirmed at $\nu =1$ and discovered at $\nu =2$. In particular, three different $\nu =2$ BLQH states are identified; the compound state, the coherent commensurate state, and the coherent incommensurate state.

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