63Cu NMR study of heavily doped superconductor TlSr2CaCu2O7-y

Guo-Qing Zheng, K. Magishi, Y. Kitaoka, K. Asayama, T. Kondo, Y. Shimakawa, T. Manako, Y. Kubo

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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: Condensed Matter
Volume186-188
Issue numberC
DOIs
Publication statusPublished - May 2 1993
Externally publishedYes

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ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Zheng, G-Q., Magishi, K., Kitaoka, Y., Asayama, K., Kondo, T., Shimakawa, Y., Manako, T., & Kubo, Y. (1993). 63Cu NMR study of heavily doped superconductor TlSr2CaCu2O7-y. Physica B: Condensed Matter, 186-188(C), 1012-1014. https://doi.org/10.1016/0921-4526(93)90771-W