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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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|
|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|
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