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VOLUME 85 | ISSUE 1 | PAGE 74 Josephson effect in thin films: the role of vortex excitations S. Khlebnikov Department of Physics, Purdue University, West Lafayette, Indiana 47907, USA PACS: 74.50.+r, 74.78.Na Abstract We consider quantum slips of phase at a round hole punctured in a thin superconducting film and show that virtual vortex pairs provide an efficient pathway for these processes. Specifically, in the limit when the normal-state resistivity of the film is large, the presence of the film causes at most a logarithmic interaction between phase slips. This is in contrast to the nearly linear confining interaction (and the consequent nearly activated behavior of the resistance) obtained when vortices are neglected. Download PS file (GZipped, 72.5K)  |  Download PDF file (173.9K) Список работ, цитирующих данную статью, см. здесь. List of articles citing this article can be found here.