Fermi-liquid behavior and BCS s-wave pairing of K3C60 observed by13C-NMR

Susumu Sasaki, Azusa Matsuda, C. W. Chu

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22 Citations (Scopus)

Abstract

This Letter reports on NMR studies of 13C in K3 C60 above and below Tc with an applied field of 2.93 T. It is found that non-single-exponential recovery data can be fitted by two components and normalized to an identical shape. With T1 defined in this way, Fermi-liquid behavior is identified above Tc, and a broadened Hebel-Slichter peak observed below Tc is well explained by the Eliashberg theory with 2/1(0) /kBTc = 4.31. The possibility of strong electron correlation and the origin of the multi-exponential recovery are discussed.

Original languageEnglish
Pages (from-to)1670-1673
Number of pages4
JournalJournal of the Physical Society of Japan
Volume63
Issue number5
Publication statusPublished - 1994
Externally publishedYes

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Keywords

  • C-NMR
  • BCS s-wave
  • Constant-T T
  • Eliashberg theory
  • Fermi liquid
  • Hebel-slichter peak
  • KC
  • Strong electron correlation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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