J. Phys. Soc. Jpn. 57, pp. 2280-2283 (1988) [4 Pages]
LETTERS

Anomalous Temperature Dependence of Cu Nuclear Spin-Lattice Relaxation in YBa2Cu3O6.91

+ Affiliations
1Institute for Solid State Physics, University of Tokyo2Department of Chemistry, Faculty of Science, Kyoto University

An anomalous temperature dependence of Cu nuclear spin-lattice relaxation time T 1 has been observed for both the Cu1 chain and Cu2 plane sites of YBa 2 Cu 3 O 6.91 ( T c =90 K) and discussed in connection with spin fluctuations and an anisotropic energy gap which nucleates in the vicinity of Cu2 nuclei.

©1988 The Physical Society of Japan

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