Noise at the Wigner Glass Transition

Details Noise at the Wigner Glass Transition Noise at the Wigner Glass Transition

2004-04-11

arxiv.org/abs/cond-mat/0404255v1

Phys. Rev. Lett. 93, 176405 (2004)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 5 postscript figures

Scientific paper

10.1103/PhysRevLett.93.176405

Using a simple model for interacting electrons in two dimensions with random disorder, we show that a crossover from a Wigner liquid to a Wigner glass occurs as a function of charge density. The noise power increases strongly at the transition and the characteristics of the 1/f^alpha noise change. When the temperature is increased, the noise power decreases. We compare these results with recent noise measurements in systems with two-dimensional metal-insulator transitions.

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