Critical phase fluctuations in superconducting wire networks
Journal Article
·
· Physical Review (Section) B: Condensed Matter; (USA)
- Institut de Physique, Universite de Neuchatel, 2000 Neuchatel, Switzerland (CH)
A study of the onset of superconducting phase coherence in periodic wire networks with weakly coupled adjacent nodes is presented. In a narrow temperature range below the mean-field critical temperature, ac conductance measurements reveal a drop in superfluid density and a peak in dissipation providing the first observation in networks of the vortex unbinding transition predicted by the Kosterlitz-Thouless theory. The ac response in the critical region is accurately described by dynamical extensions of the theory incorporating vortex-pinning phenomena created by the periodic structure of the network.
- OSTI ID:
- 5090364
- Journal Information:
- Physical Review (Section) B: Condensed Matter; (USA), Journal Name: Physical Review (Section) B: Condensed Matter; (USA) Vol. 40:16; ISSN 0163-1829; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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