Dissipation and coherent effects in narrow superconducting channels
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Date
2005
Authors
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Journal ISSN
Volume Title
Publisher
American Physical Society
Abstract
We apply the time-dependent Ginzburg-Landau (TDGL) equations to study small ac currents of frequency omega in superconducting channels narrow on the scale of London penetration depth. We show that TDGL equations have t-dependent and spatially uniform solutions that describe the order parameter with an oscillating part of the double frequency coexisting with an ac electric field. We evaluate the Ohmic losses (related neither to the flux flow nor to the phase slips) and show that the resistivity reduction on cooling through the critical temperature T-c should behave as (T-c-T)(2)/omega(2). If the channel is cut out of an anisotropic material in a direction other than the principal axes, the transverse phase difference and the Josephson voltage between the channel sides are generated.
Description
Journals published by the American Physical Society can be found at http://journals.aps.org/
Keywords
Physics
Citation
MA Kayali, VG Kogan and Valery L. Pokrovsky. Phys.Rev.B 71 024525 2005."Copyright (2005) by the American Physical Society."