63Cu NMR study in high-Tc superconductor TlSr2(Lu1-xCax)Cu2oy

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

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

63Cu NMR measuements have been carried out in heavily-doped TlSr2CaCu2O7-δ with Tc = 70K, 52K and OK, respectively, and in lightly-doped TlSr2(Lu0.7Ca0.3)Cu2Oy with Tc = 40K under a magnetic field of 11T. From a systematic measurement of the nuclear-spin lattice relaxation rate, 63(1/T1), the antiferromagnetic (AF) spin correlation is suppressed with increasing hole content, i.e. with decreasing Tc as in the case of Tl2Ba2CuO6+y. From the Knight shift measurement, it has been found that the T-independent behavior of the spin susceptibility above Tc in heavily-doped system changes into a T-decreasing one in the lightly-doped TlSr2(Lu0.7Ca0.3)Cu2Oy, which is the same as in YBa2Cu3O6.63.

Original languageEnglish
Pages (from-to)1631-1634
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume235-240
Issue numberPART 3
DOIs
Publication statusPublished - Dec 1994
Externally publishedYes

ASJC Scopus subject areas

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

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