Title

Localization in a nondegenerate two-dimensional electron gas

Document Type

Article

Publication Date

1-1-1987

Abstract

Magnetoresistance measurements of an electron gas formed on a solid-hydrogen substrate are reported as a function of surface disorder. High-mobility surfaces display an essentially classical positive B2 field dependence. Lower-mobility surfaces, however, are characterized by the appearance of a negative magnetoresistance for fields less than 0.2 T, in good agreement with present weak-localization theories. On extremely disordered surfaces we find large increases in resistivity but a finite residual electron diffusivity D mel. © 1987 The American Physical Society.

Publication Source (Journal or Book title)

Physical Review Letters

First Page

2106

Last Page

2109

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