Title

The conductivity and mobility of 2D nondegenerate electrons in the strong localization regime

Document Type

Article

Publication Date

2-19-1992

Abstract

We report magnetoconductance measurements of a nondegenerate 2D electron gas as a function of ambient helium gas density at several temperatures between T = 2 and 8 K. For helium gas densities greater than 2 × 1020 cm-3 the 2D electron gas is driven into a strong localization regime characterized by an activated conductivity with an activation energy proportional to the gas density. Magnetoresistance measurements at high gas densities show a remnant electron mobility consistent with an electron diffusivity of h{stroke}/mel at the mobility edge. © 1992.

Publication Source (Journal or Book title)

Surface Science

First Page

663

Last Page

667

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