Baenninger, M;
Ghosh, A;
Pepper, M;
Beere, HE;
Farrer, I;
Ritchie, DA;
(2008)
Low-temperature collapse of electron localization in two dimensions.
PHYS REV LETT
, 100
(1)
, Article 016805. 10.1103/PhysRevLett.100.016805.
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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.
| Type: | Article |
|---|---|
| Title: | Low-temperature collapse of electron localization in two dimensions |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.100.016805 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.100.016805 |
| Language: | English |
| Additional information: | © 2008 The American Physical Society |
| Keywords: | METAL-INSULATOR-TRANSITION, QUANTUM HALL LIQUID, ANDERSON TRANSITION, GROUND-STATE, CONDUCTIVITY, DENSITY, GAS, SYSTEMS, LATTICE, FIELD |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1314472 |
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