%N 1
%J PHYS REV LETT
%K METAL-INSULATOR-TRANSITION, QUANTUM HALL LIQUID, ANDERSON TRANSITION, GROUND-STATE, CONDUCTIVITY, DENSITY, GAS, SYSTEMS, LATTICE, FIELD
%L discovery1314472
%V 100
%D 2008
%O © 2008 The American Physical Society
%T Low-temperature collapse of electron localization in two dimensions
%X 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.
%A M Baenninger
%A A Ghosh
%A M Pepper
%A HE Beere
%A I Farrer
%A DA Ritchie
%I AMER PHYSICAL SOC