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Author Bulaevskii, L. N. ♦ Dominguez, D. ♦ Maley, M. P. ♦ Bishop, A. R. ♦ Ivlev, B. I.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ HIGH-TC SUPERCONDUCTORS ♦ COLLECTIVE EXCITATIONS ♦ GINZBURG-LANDAU THEORY ♦ ORDER PARAMETERS ♦ JOSEPHSON EFFECT ♦ MAGNETIC FIELDS ♦ RELAXATION TIME ♦ DISPERSION RELATIONS ♦ CRITICAL CURRENT
Abstract Using Maxwell and time-dependent Ginzburg-Landau equations in the framework of a Lawrence-Doniach model we derive dynamical equations for the order parameter phase difference in Josephson-coupled layered superconductors. These equations allow the description of nonstationary Josephson effects in magnetic fields parallel to the layers. We obtain the dispersion relation and relaxation rate of collective modes in the absence of a magnetic field and in a strong parallel magnetic field. The dispersion with respect to the momentum in the {ital ab} plane in high fields is much stronger that in a single Josephson junction due to the multilayer structure. This leads to a very weak {ital c}-axis critical current in high magnetic fields. The relaxation rate of collective modes is found to be weak in comparison with its frequency. We discuss experimental data for the {ital c}-axis plasma resonance and critical current in parallel magnetic fields. {copyright} {ital 1996 The American Physical Society.}
ISSN 01631829
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-06-01
Publisher Place United States
Journal Physical Review, B: Condensed Matter
Volume Number 53
Issue Number 21


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