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

A. Sawada·Z. F. Ezawa·H. Ohno·Y. Horikoshi·A. Urayama·Y. Ohno·S. Kishimoto·F. Matsukura·N. Kumada
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Abstract

We have measured the Hall-plateau width and the activation energy of the bilayer quantum Hall (BLQH) states at the Landau-level filling factor $ν=1$ 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 $ν=1$ and discovered at $ν=2$. In particular, three different $ν=2$ BLQH states are identified; the compound state, the coherent commensurate state, and the coherent incommensurate state.

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A. Sawada, Z. F. Ezawa, H. Ohno, Y. Horikoshi, A. Urayama, Y. Ohno, S. Kishimoto, F. Matsukura, N. Kumada. 1998-12-04. Interlayer Coherence in the $ν=1$ and $ν=2$ Bilayer Quantum Hall States. https://doi.org/10.1103/physrevb.59.14888

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