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Super strong effect of surface impurities on the resistance and Hall effect of quench condensed Cs films
Authors:G Bergmann  D Garrett  D Franks
Institution:(1) Department of Physics, University of Southern California, Los Angeles, California 90089-0484, USA, US
Abstract:Thin films of Cs, quench condensed onto a He cold quartz plate, possess electronic mean free paths which considerably exceed the film thicknesses. When theses films are covered in situ with sub monolayers of Au, Ag, In, Rh and Pb in the range between 0.01 and 1 monolayers the film resistance and the Hall constant increase dramatically. This corresponds to a scattering cross section of the surface impurities which is larger than 1 in units of Various models are explored to explain these unusual behavior. None yields a satisfactory explanation for this extremely strong effect of surface impurities on the resistance and the Hall effect. Received: 8 January 1998 / Accepted: 17 March 1998
Keywords:PACS  71  20  Dg Alkali and alkaline earth metals - 72  10  Fk Scattering by point defects  dislocations  surfaces  and other          imperfections (including Kondo effect) - 73  50  Yg Other thin film transport-related topics
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