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- Title
Features of the spin fluctuations and superconductivity of Tl[sub 2]Ba[sub 2]CaCu[sub 2]O[sub 8-δ] according to [sup 63]Cu and [sup 17]O NMR data.
- Authors
Gerashchenko, A. P.; Mikhalev, K. N.; Verkhovskiı, S. V.; Piskunov, Yu. V.; Anan’ev, A. V.; Okulova, K. A.; Yakubovskiı, A. Yu.; Shustov, L. D.
- Abstract
Data on the NMR line shifts, the spin-lattice relaxation rate of [sup 63]Cu and [sup 17]O nuclei, and the spin-spin relaxation rate of [sup 63]Cu are obtained for Tl[sub 2]Ba[sub 2]CaCu[sub 2]O[sub 8-δ] (T[sub c] = 112 K) in the normal and superconducting states. The hyperfine constants at the copper and oxygen atoms in a CuO[sub 2] plane are estimated from an analysis of the temperature dependence of the Knight shift. The temperature-dependent behavior of the long- and short-wavelength parts of the dynamic spin susceptibility is discussed by modeling an antiferromagnetic Fermi liquid. The possible relation between the characteristics of the spin-fluctuation spectrum and the superconducting transition temperature is analyzed for the oxide investigated.
- Subjects
SPIN excitations; SUPERCONDUCTIVITY; NUCLEAR magnetic resonance
- Publication
Journal of Experimental & Theoretical Physics, 1999, Vol 88, Issue 3, p545
- ISSN
1063-7761
- Publication type
Article
- DOI
10.1134/1.558827