Vortex-antivortex pair dissociation in two-dimensional superconductors

K. Epstein, A. M. Goldman, A. M. Kadin

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The nonlinear I-V characteristics below the superconducting transition of high-sheet-resistance Hg-Xe films have been analyzed with use of a model in which the nonlinearity is a consequence of current-induced vortex-antivortex unbinding. The characteristics can be fitted by V∼Ia(T), where a(T) is a measure of the a real superelectron density ns (T). The universal relations predicted for the Kosterlitz-Thouless-Berezinskii transition in two dimensional superconducting films are obeyed.

Original languageEnglish (US)
Pages (from-to)534-537
Number of pages4
JournalPhysical Review Letters
Issue number7
StatePublished - Jan 1 1981


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