Cu-63 nuclear relaxation in the spin-Peierls compound CuGeO3

被引：11

作者：

Itoh, M ^{[1
]}

Sugahara, M ^{[1
]}

Yamauchi, T ^{[1
]}

Ueda, Y ^{[1
]}

机构：

[1] UNIV TOKYO, INST SOLID STATE PHYS, MINATO KU, TOKYO 106, JAPAN

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.54.R9631

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have measured the temperature dependence of the nuclear spin-lattice relaxation rate 1/T-1 and the nuclear spin-spin relaxation rate 1/T-2G due to indirect nuclear coupling for Cu-63 NQR in the spin-Peierls (SP) compound CuGeO3, which undergoes the SP transition at T(SP)similar to 14 K, using a single crystal. We perform a combined analysis of 1/T-1 and 1/T-2G on the basis of theoretical results recently obtained for the S=1/2 one-dimensional Heisenberg antiferromagnet (1DHAF) model to clarify the spin dynamics. Consequently we find that the spin dynamics above T-SP in CuGeO3 is not described by the pure S=1/2 1DHAF model.

引用

页码：R9631 / R9634

页数：4

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