Cu-63 NMR study on spin ladder compounds Sr14-xCaxCu24O41 (x=9, 11.5)

被引：6

作者：

Magishi, K ^{[1
]}

Matsumoto, S ^{[1
]}

Ishida, K ^{[1
]}

Kitaoka, Y ^{[1
]}

Asayama, K ^{[1
]}

Uehara, M ^{[1
]}

Nagata, T ^{[1
]}

Akimitsu, J ^{[1
]}

机构：

[1] AOYAMA GAKUIN UNIV,DEPT PHYS,SETAGAYA KU,TOKYO 157,JAPAN

来源：

PHYSICA C | 1997年 / 282卷

关键词：

D O I：

10.1016/S0921-4534(97)00671-0

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Cu-63 NMR measurements for the ladder sites on single crystals Sr14-xCaxCu24O41 (x = 9, 11.5), which consist of simple chains and 2-leg ladders of Cu2+ ions, have been carried out at f = 125.1 MHz for H parallel to b-axis. From respective measurements of the Knight shift and the nuclear spin-lattice relaxation rate, 1/T-1, the spin gap in the ladder has been found to be as large as Delta = 250 K (260 K) and 340 K (360 K) for x = 11.5 (x = 9), respectively.

引用

页码：1115 / 1116

页数：2

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