63Cu NMR study of heavily doped superconductor TlSr2CaCu2O7-y

G. q. Zheng, K. Magishi, Y. Kitaoka, K. Asayama, T. Kondo, Y. Shimakawa, T. Manako, Y. Kubo

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9 Citations (Scopus)

Abstract

The 63Cu Knight shifts have been measured for the heavily doped high-Tc superconductors TlSr2CaCu2O7-y, with Tc = 64 and 45 K. The spin part of the shift, Ks, is almost T-independent in the normal state and increases with decreasin g Tc. From the analysis of the anisotropy in Ks in both compounds, the transferred hyperfine field from the nearest-neighbor Cu spins has been deduced to be larger than that in YBa2Cu3O7, similar to the results for Tl2Ba2CuO6+y. A systemat ic correlation has been found in the heavily doped superconductors that the spin susceptibility and the nuclear quadrupole frequency increase with decreasing Tc, while 1/T1T is suppressed, as reported previously.

Original languageEnglish
Pages (from-to)1012-1014
Number of pages3
JournalPhysica B: Physics of Condensed Matter
Volume186-188
Issue numberC
DOIs
Publication statusPublished - May 2 1993
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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