Nuclear magnetic relaxation under high pressure in the spin ladder Sr2Ca12Cu24O41

被引：3

作者：

Fujiwara, N

Uwatoko, Y

Mori, N

Matsumoto, T

Motoyama, N

Uchida, S

机构：

[1] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

[2] Saitama Univ, Fac Sci, Dept Phys, Urawa, Saitama 3388570, Japan

[3] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan

[4] Univ Tokyo, Dept Superconduct, Bunkyo Ku, Tokyo 1138656, Japan

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2002年 / 63卷 / 6-8期

关键词：

oxide; high pressure; nuclear magnetic resonance (NMR);

D O I：

10.1016/S0022-3697(02)00048-3

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nuclear magnetic resonance (NMR) under pressure below 3 GPa was performed by using a single crystal of Sr2Ca12Cu24O41 to investigate the spin dynamics on the critical regime neighboring the superconducting phase. The temperature dependence of the relaxation rate 1/T-1 deviates from an activated type below 50 K and exhibits power law behavior. On the other hand, 1/T-1 increases as pressure is increased at low temperatures. These features are intrinsic to this system and reflect some fluctuations originating from holes. (C) 2002 Elsevier Science Ltd. All rights reserved.

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页码：1103 / 1105

页数：3

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