Title

Temperature dependence of the conductivity and minimum quantum mobility of a highly disordered dilute two-dimensional electron gas

Document Type

Article

Publication Date

1-1-1990

Abstract

We report the first experimental observations of magnetic-field-independent corrections to the conductivity of a weakly interacting 2D electron gas on solid on H2. These incoherent corrections, which are substantially larger than the weak-localization terms at high helium-gas densities, are estimated via an electron-trapping model. The model has essentially no adjustable parameters and gives a self-consistent extrapolation between the weak- and strong-disorder limits. In the regime in which trapping is dominant we observe a residual electron mobility res T-1 associated with a lower quantum limit of diffusion. © 1990 The American Physical Society.

Publication Source (Journal or Book title)

Physical Review Letters

First Page

3333

Last Page

3336

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