Forced localization in thin films, investigated with the superconducting proximity effectM. Zhang and G. Bergmann
Physics Department, University of Southern California Los Angeles, CA 90089-0484, USA
received 26 May 2004; accepted in final form 17 November 2004
published online 24 December 2004
Thin films of alkali metals are forced into an insulating state by being covered with sub-mono-layers of . The superconducting proximity effect is used to investigate the electronic change in the alkali film. On the length scale of the film thickness the electronic properties of the alkali film do not change noticeably during the metal-insulator transition.
74.45.+c - Proximity effects; Andreev effect; SN and SNS junctions.
73.20.Fz - Weak or Anderson localization.
71.20.Dg - Alkali and alkaline earth metals.
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