CU-63 NUCLEAR TRANSVERSE RELAXATION RATE AND SPIN CORRELATIONS IN YBA2CU3O6.63

被引：98

作者：

TAKIGAWA, M

机构：

[1] IBM Thomas J. Watson Research Center, Yorktown Heights, NY 10598

来源：

PHYSICAL REVIEW B | 1994年 / 49卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.49.4158

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Cu-63 nuclear transverse relaxation rate in the normal state of YBa2Cu3O6.33 (T(c) = 62 K) is reported here. The Gaussian relaxation rate 1/T2G at the planar Cu sites increases with decreasing temperature from 300 down to 100 K, below which it becomes independent of temperature. This behavior is quite different from the nuclear spin-lattice relaxation rate 1/(T1T), which shows a peak near 150 K, and indicates that antiferromagnetic spin correlations in the CuO2 Planes continue to grow in the temperature range where the low-frequency spin fluctuations are depressed by a spin gap.

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页码：4158 / 4162

页数：5

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