Dimerized ground state and magnetic excitations in CaCuGe2O6

被引：39

作者：

Zheludev, A ^{[1
]}

Shirane, G ^{[1
]}

Sasago, Y ^{[1
]}

Hase, M ^{[1
]}

Uchinokura, K ^{[1
]}

机构：

[1] UNIV TOKYO,DEPT APPL PHYS,BUNKYO KU,TOKYO 113,JAPAN

来源：

PHYSICAL REVIEW B | 1996年 / 53卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.53.11642

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The S = 1/2 Heisenberg antiferromagnet CaCuGe2O6 was studied by inelastic neutron scattering on a powder sample in the temperature range 5-300 K. A sharp symmetric magnetic inelastic peak was observed around h omega=6 meV, and its q and temperature dependences were investigated. The absolute values of the energy-integrated magnetic intensity were determined. Despite the fact that from the structural point of view the material has a distinct one-dimensional arrangement of magnetic sites, the experimental results are surprisingly well described by an ensemble of weakly interacting antiferromagnetic dimers, which are composed of pairs of Cu2+ ions.

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页码：11642 / 11646

页数：5

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