Critical currents of the quantum Hall effect in the mesoscopic regime

P. G.N.De Vegvar, A. M. Chang, G. Timp, P. M. Mankiewich, J. E. Cunningham, R. Behringer, R. E. Howard

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

The critical currents associated with the breakdown of the quantum Hall effect have been measured in high-mobility, one-dimensional channels fabricated in GaAs-AlxGa1-xAs heterostructures. The results differ in several respects from the breakdown in macroscopic samples. The on-set of dissipation shows little hysteresis and depends on the direction of the current with respect to the magnetic field. The value of the critical current is also independent of the filling factor across a large fraction of the Hall plateau. These observations indicate that mesoscopic considerations must be included in any theory of breakdown on this size scale.

Original languageEnglish (US)
Pages (from-to)9366-9369
Number of pages4
JournalPhysical Review B
Volume36
Issue number17
DOIs
StatePublished - 1987
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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