Superconducting correlations in ultra-small metallic grains

G. S. Tian*, Lei Han TANG, Q. H. Chen

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

13 Citations (Scopus)

Abstract

To describe the crossover from the bulk BCS superconductivity to a fluctuation-dominated regime in ultrasmall metallic grains, new order parameters and correlation functions, such as "parity gap" and "pair-mixing correlation function", have been recently introduced. In this paper, we discuss the small-grain behaviour of the Penrose-Onsager-Yang off-diagonal long-range order (ODLRO) parameter in a pseudo-spin representation. Relations between the ODLRO parameter and those mentioned above are established through analytical and numerical calculations.

Original languageEnglish
Pages (from-to)361-367
Number of pages7
JournalEurophysics Letters
Volume50
Issue number3
DOIs
Publication statusPublished - 1 May 2000

Scopus Subject Areas

  • Physics and Astronomy(all)

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