Nonexponential Relaxations in a Two-Dimensional Electron System in Silicon

Details Nonexponential Relaxations in a Two-Dimensional Electron System in Silicon Nonexponential Relaxations in a Two-Dimensional Electron System in Silicon

2005-09-28

arxiv.org/abs/cond-mat/0509739v1

Phys. Rev. Lett. 96, 037403 (2006)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 5 figures

Scientific paper

10.1103/PhysRevLett.96.037403

The relaxations of conductivity have been studied in a strongly disordered two-dimensional (2D) electron system in Si after excitation far from equilibrium by a rapid change of carrier density n_s at low temperatures T. The dramatic and precise dependence of the relaxations on n_s and T strongly suggests (a) the transition to a glassy phase as T->0, and (b) the Coulomb interactions between 2D electrons play a dominant role in the observed out-of-equilibrium dynamics.

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