On existence of quantum diffusion of 2D electrons at the surface
Abstract
A quantum diffusion of 2D electrons at a metal substrate has been shown to arise because of surfacebulk interaction via hybridization provided that the surface Fermi momentum has been smaller than the bulk one. The diffusion coefficient D has been found to depend nonmonotonously on sample dimensions L. An initial decrease in D has turned into an increase for sufficiently large L. The minimum in D has nonanalytically depended on the hybridization constant: D _{min}∼g ^{{4}/{3}}. The effects predicted have resulted from the instability of the zerocomponent nonlinear σmodel with respect to inclusion of certain symmetry — breaking terms which have proved to increase under RG transformations.
 Publication:

Solid State Communications
 Pub Date:
 July 1983
 DOI:
 10.1016/00381098(83)905665
 Bibcode:
 1983SSCom..47..297K