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Breakdown of the nu $=$ 1 integer quantum Hall state in a high mobility sample

ORAL

Abstract

The integer quantum Hall Wigner solid was recently observed in high mobility GaAs two-dimensional electron gas samples near filling factor nu $=$ 1. We performed large signal current-voltage characteristic measurements in the region of this phase. We observed well-defined breakdown behavior in the regions of both the integer quantum Hall Wigner solid and the Anderson insulator. To our surprise, we find that the critical current exhibits a monotonic dependence as the filling factor moves away from the center of the nu $=$ 1 plateau, even in the region of the Wigner solid. Therefore, it appears that the breakdown in the current-voltage characteristics measured along the nu $=$ 1 integer quantum Hall plateau does not differentiate the reentrant integer quantum Hall Wigner solid from the Anderson insulator. *The work at Purdue was supported by the US DOE, Office of Basic Energy Sciences under the award DE-SC0006671. Sample growth efforts at Princeton University were supported by the National Science Foundation MRSEC Grant DMR-1420541 and the Gordon and Betty Moore Foundation Grant GBMF 4420.

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Authors

  • Haoyun Huang

    Purdue University

  • Carlos A. Argu\"elles

    Purdue University, Princeton University, The State University of NJ Piscataway, University of Kansas, Chungbuk National University, Jazan University, University of Wisconsin Madison and Harvard University, University of Iowa, Harvard University

  • Carlos A. Argu\"elles

    Purdue University, Princeton University, The State University of NJ Piscataway, University of Kansas, Chungbuk National University, Jazan University, University of Wisconsin Madison and Harvard University, University of Iowa, Harvard University

  • Carlos A. Argu\"elles

    Purdue University, Princeton University, The State University of NJ Piscataway, University of Kansas, Chungbuk National University, Jazan University, University of Wisconsin Madison and Harvard University, University of Iowa, Harvard University

  • Carlos A. Argu\"elles

    Purdue University, Princeton University, The State University of NJ Piscataway, University of Kansas, Chungbuk National University, Jazan University, University of Wisconsin Madison and Harvard University, University of Iowa, Harvard University