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Low-voltage breakdown of the quantum Hall state in a laterally constricted two-dimensional electron gas

J. R. Kirtley, Z. Schlesinger, T. N. Theis, F. P. Milliken, S. L. Wright, and L. F. Palmateer
Phys. Rev. B 34, 1384(R) – Published 15 July 1986
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Abstract

We have observed controlled, low-voltage breakdown of the quantum Hall state in GaAsAlxGa1xAs heterostructures with lateral constrictions a few micrometers in width. The breakdown characteristics show an onset of dissipation at voltages corresponding to the cyclotron energy for even filling factors. Analysis of these results in terms of a simple model implies that the dissipation process involves interlevel as well as intralevel scattering, and therefore that large potential gradients are present in the two-dimensional electron gas.

  • Received 21 May 1986

DOI:https://doi.org/10.1103/PhysRevB.34.1384

©1986 American Physical Society

Authors & Affiliations

J. R. Kirtley, Z. Schlesinger, T. N. Theis, F. P. Milliken, S. L. Wright, and L. F. Palmateer

  • IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598

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Vol. 34, Iss. 2 — 15 July 1986

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