Fluctuations of the order parameter's phase in layered superconductors

Cakiroglu O.

JOURNAL OF SUPERCONDUCTIVITY, vol.13, no.4, pp.639-644, 2000 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 13 Issue: 4
  • Publication Date: 2000
  • Doi Number: 10.1023/a:1007893405504
  • Journal Name: JOURNAL OF SUPERCONDUCTIVITY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED)
  • Page Numbers: pp.639-644
  • Istanbul University Affiliated: No

Abstract

The influence of the quantum fluctuations of the order parameter's phase on the critical temperature T-c is studied for a Josephson coupled layered superconductor. Two characteristic critical temperatures exist for a system, namely the superconducting critical temperature T-c((2)) for a single layer estimated by the mean-field theory and the transition temperature for the outset or the superconducting phase coherence T*(c). The true critical temperature T-c is shown to vary inside the intervals T*(c) less than or equal to T-c less than or equal to T-c((2)). For a strong quantum phase fluctuation limit, the superconducting layers become decoupled.