Glass Transition in a Two-Dimensional Electron System in Silicon
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چکیده
Large fluctuations of conductivity with time are observed in a low-mobility twodimensional electron system in silicon at low electron densities ns and temperatures. A dramatic increase of the noise power (∝ 1/fα) as ns is reduced below a certain density ng, and a sharp jump of α at ns ≈ ng, are attributed to the freezing of the electron glass at ns = ng. The data strongly suggest that glassy dynamics persists in the metallic phase.
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تاریخ انتشار 2002