Magnetization of Cu-2(C5H12N2)(2)Cl-4: A Heisenberg spin-ladder system

被引:46
|
作者
Hayward, CA [1 ]
Poilblanc, D [1 ]
Levy, LP [1 ]
机构
[1] MAX PLANCK INST FESTKORPERFORSCH,CNRS,HIGH FIELD MAGNET LAB,F-38042 GRENOBLE 09,FRANCE
来源
PHYSICAL REVIEW B | 1996年 / 54卷 / 18期
关键词
D O I
10.1103/PhysRevB.54.R12649
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We study the magnetization of a Heisenberg spin ladder using exact-diagonalization techniques, finding three distinct magnetic phases. We consider the results in relation to the experimental behavior of the copper compound Cu-2(C5H12N2)(2)Cl-4 and deduce that the compound is well described by such a model with a ratio of bond strengths (J/J') of the order of 0.2, consistent with results from the magnetic susceptibility. The effects of temperature, spin impurities, and additional diagonal bonds are presented and we give evidence that these diagonal bonds are indeed of a ferromagnetic nature.
引用
收藏
页码:12649 / 12652
页数:4
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