Spin-gap and the superconducting fluctuations in high-Tc cuprates probed by 63Cu NMR

G. Q. Zheng, H. Ozaki, Y. Kitaoka, W. G. Clark, Y. Kodama, T. Kondo, Y. Shimakawa, Y. Kubo, P. Kuhns, A. P. Reyes, W. G. Moulton

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


From the 63Cu Knight shift and the nuclear spin-lattice relaxation rate under magnetic fields from zero up to 28 T in the underdoped (U) YBa2Cu4O8 and the slightly overdoped (O) TlSr2CaCu2O6.8, we find that the spin-gap (pseudogap) behaviors show contrasting response to magnetic fields in the U and O compounds. In the O compound, the spin-gap is strongly field dependent and can be accounted for by the superconducting fluctuation effects, but that in the U compound shows no field dependence. The implication is discussed.

Original languageEnglish
Pages (from-to)25-27
Number of pages3
JournalJournal of Physics and Chemistry of Solids
Issue number1-2
Publication statusPublished - Jan 2001
Externally publishedYes

ASJC Scopus subject areas

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


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