NMR-STUDIES OF SPIN DYNAMICS IN CUPRATES

被引：3
|
作者：
TAKIGAWA, M
MITZI, DB
机构：
[1] IBM T.J. Watson Research Center, Yorktown Heights, 10598, NY
来源：
JOURNAL OF LOW TEMPERATURE PHYSICS | 1994年 / 95卷 / 1-2期
关键词：
D O I：
10.1007/BF00754926
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report recent NMR results in cuprates. The oxygen Knight shift and the Cu nuclear spin-lattice relaxation rate in Bi2.1Sr1.94Ca0.88Cu2.0708+6 single crystals revealed a gapless superconducting state, which can be most naturally explained by a d-wave pairing state and the intrinsic disorder in this material. The Cu nuclear spin-spin relaxation rate in underdoped YBa2Cu3O6.63 shows distinct temperature dependence from the spin-lattice relaxation rate, providing direct evidence for a pseudo spin-gap near the antiferromagnetic wave vector.
引用
收藏
页码：89 / 93
页数：5
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