paper

Theory of Current-Induced Breakdown of the Quantum Hall Effect

arXiv:cond-mat/9803376 · doi:10.1103/PhysRevB.58.R13391

Abstract

By studying the quantum Hall effect of stationary states with high values of injected current using a von Neumann lattice representation, we found that broadening of extended state bands due to a Hall electric field occurs and causes the breakdown of the quantum Hall effect. The Hall conductance agrees with a topological invariant that is quantized exactly below a critical field and is not quantized above a critical field. The critical field is proportional to and is enhanced substantially if the extended states occupy a small fraction of the system.

5 pages, RevTeX, final version to appear in PRB

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