A New Transport Regime in the Quantum Hall Effect

Abstract

This paper describes an experimental identification and characterization of a new low temperature transport regime near the quantum Hall-to-insulator transition. In this regime, a wide range of transport data are compactly described by a simple phenomenological form which, on the one hand, is inconsistent with either quantum Hall or insulating behavior and, on the other hand, is also clearly at odds with a quantum-critical, or scaling, description. We are unable to determine whether this new regime represents a clearly defined state or is a consequence of finite temperature and sample-size measurements.

arXiv commentRevtex, 3 pages, 2 figures

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• Continuous Quantum Phase Transitions
• Scaling Theory of the Integer Quantum Hall Effect
• Evidence for charge-flux duality near the quantum Hall liquid to insulator transition
• Reflection symmetry at a B=0 metal-insulator transition in two dimensions
• The Nature of the Hall Insulator

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