1H NMR study of hydrogenated YBa2Cu3O6.9 and Bi2Sr2CaCu2O8+δ

K. Morimoto, T. Takabatake, W. Ye, S. Orimo, T. Hihara, H. Fujii

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The nuclear spin-lattice relaxation time of 1H in YBa2Cu3O6.9Hx (x=0.18 and 0.63) abd Bi2Sr2CaCu2O8+δHx (x=0.24 and 0.42) has been measured at 29 and 58 MHz in the temperature range between 77 and 294 K. In these compounds, the relaxation is not of a single-exponential type, but consists of two components with very short and long relaxation times. With decreasing temperature from 294 to 100 K, the relaxation rate of the long-component in each sample decreases by one order of magnitude. The relaxation rate in YBa2Cu3O6.9H0.18 is enhanced by a factor of two just below Tc and then sharply decreases, whereas that in Bi2Sr2CaCu2O8+δH0.24 drops without showing such an enhancement. The appearance of the enhancement in the former may be ascribed to the rather weak interaction of 1H in the Cu(1)-O plane with electron spin-fluctuations in the Cu(2)-O2 plane.

Original languageEnglish
Pages (from-to)849-853
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume159
Issue number6
DOIs
Publication statusPublished - 1989 Aug 1
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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