Spin dynamics of SrCu2O3 and the Heisenberg ladder

被引：53

作者：

Sandvik, AW

Dagotto, E

Scalapino, DJ

机构：

[1] FLORIDA STATE UNIV, DEPT PHYS, TALLAHASSEE, FL 32306 USA

[2] UNIV CALIF SANTA BARBARA, DEPT PHYS, SANTA BARBARA, CA 93106 USA

来源：

PHYSICAL REVIEW B | 1996年 / 53卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.53.R2934

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The S=1/2 Heisenberg antiferromagnet in the ladder geometry is studied as a model for the spin degrees of freedom of SrCu2O3. The susceptibility and the spin-echo decay rate are calculated using a quantum Monte Carlo technique, and the spin-lattice relaxation rate is obtained by maximum-entropy analytic continuation of imaginary-time correlation functions. All calculated quantities are in reasonable agreement with experimental results for SrCu2O3 if the exchange coupling J approximate to 850 K. However, for the susceptibility fit an anomalously low factor is required.

引用

收藏

页码：R2934 / R2937

页数：4

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