Evidence of Nonlocal Breakdown of the Integer Quantum Hall Effect

S. Komiyama, Y. Kawaguchi, T. Osada, and Y. Shiraki
Phys. Rev. Lett. 77, 558 – Published 15 July 1996
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Abstract

Current induced breakdown of the integer quantum Hall effect (QHE) is studied in GaAs /AlGaAs single heterostructure Hall bars at T=1.6–4.2 K and B=2–6 T ( ν=2, 4, and 6). The QHE breakdown is absent over a macroscopic region in the two-dimensional electron gas channel on the side of the electron-injecting corner of the Hall bars. The observed nonlocal nature suggests that bootstrap-type electron heating is relevant to the QHE breakdown.

  • Received 25 March 1996

DOI:https://doi.org/10.1103/PhysRevLett.77.558

©1996 American Physical Society

Authors & Affiliations

S. Komiyama and Y. Kawaguchi

  • Department of Pure and Applied Science, University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo, Japan

T. Osada and Y. Shiraki

  • Research Center of Advanced Science and Technology, University of Tokyo, Komaba 3-6-1, Meguro-ku, Tokyo, Japan

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Issue

Vol. 77, Iss. 3 — 15 July 1996

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