NMR study of disorder effect on the superconductivity in Tl2Ba2Ca2Cu3O10

Guo Qing Zheng, Y. Kitaokaa, K. Asayama, K. Hamada, H. Yamauchi, S. Tanaka

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

63Cu spin-lattice relaxation rate has been measured in annealed and as-grown samples of Tl2Ba2Ca2CU3O10. We found for the first time that Tc increases as a result of decrease of the residual density of states at the Fermi level due to the improvement of crystal order by annealing. A 2-dimensional d-wave superconductivity model accounts for the increase of Tc of 8K in terms of the change in potential scattering due to crystal imperfection which is likely caused by Tl-substitution of Ca site.

Original languageEnglish
Pages (from-to)1385-1386
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume282-287
Issue numberPART 3
DOIs
Publication statusPublished - Aug 1997
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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