Low-temperature collapse of electron localization in two dimensions

Baenninger, Matthias and Ghosh, Arindam and Pepper, Michael and Beere, Harvey E and Farrer, Ian and Ritchie, David A (2008) Low-temperature collapse of electron localization in two dimensions. In: Physical Review Letters, 100 (1). 016805-1-016805-4.

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Abstract

We report direct experimental evidence that the insulating phase of a disordered, yet strongly interacting two-dimensional electron system becomes unstable at low temperatures. As the temperature decreases, a transition from insulating to metal-like transport behavior is observed, which persists even when the resistivity of the system greatly exceeds the quantum of resistivity $h/e^2$. The results have been achieved by measuring transport on a mesoscopic length scale while systematically varying the strength of disorder.

Item Type:	Journal Article
Publication:	Physical Review Letters
Publisher:	The American Physical Society
Additional Information:	This article copyright belongs to The American Physical Society.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	18 Feb 2008
Last Modified:	19 Sep 2010 04:42
URI:	http://eprints.iisc.ac.in/id/eprint/13047

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