Tunneling evidence of strong cooper-pair-breaking near Tc in cuprate superconductors

E. L. Wolf, H. J. Tao, B. Susla

Research output: Contribution to journalArticle

Abstract

The superconductive tunneling density of states obtained from conventional metal film-insulator tunnel junctions on cleaved (ab) basal planes of single crystal Bi2Sr2CaCu2O8+y (2212) reveals a rising pair breaking rate Γ(T) near Tc, as predicted by Lee and Read. We obtain Γ(T)=2.3 kTc(T/Tc)3, which confirms a recent calculation by Coffey and also recent tunneling results of Takada et al on YBa2Cu3O6. This implies a pair lifetime at Tc of about 40 fs in 2212. The results indicate that the T3 pairbreaking near Tc is an intrinsic feature of superconductivity in the cuprate planes.

Original languageEnglish (US)
Pages (from-to)519-523
Number of pages5
JournalSolid State Communications
Volume77
Issue number7
DOIs
StatePublished - Feb 1991

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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