@article{discovery1314472, volume = {100}, note = {{\copyright} 2008 The American Physical Society}, year = {2008}, title = {Low-temperature collapse of electron localization in two dimensions}, publisher = {AMER PHYSICAL SOC}, journal = {PHYS REV LETT}, number = {1}, month = {January}, keywords = {METAL-INSULATOR-TRANSITION, QUANTUM HALL LIQUID, ANDERSON TRANSITION, GROUND-STATE, CONDUCTIVITY, DENSITY, GAS, SYSTEMS, LATTICE, FIELD}, 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.}, issn = {0031-9007}, author = {Baenninger, M and Ghosh, A and Pepper, M and Beere, HE and Farrer, I and Ritchie, DA}, url = {http://dx.doi.org/10.1103/PhysRevLett.100.016805} }