Spin-cluster model for the low-temperature phase of α′-NaV2O5

被引：8

作者：

Trebst, S

Sengupta, A

机构：

[1] Univ Bonn, Inst Phys, D-53115 Bonn, Germany

[2] Lucent Technol, Bell Labs, Murray Hill, NJ 07974 USA

来源：

PHYSICAL REVIEW B | 2000年 / 62卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.62.R14613

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We discuss magnetic excitations of a spin-cluster model which has been suggested to describe the low-temperature phase of alpha'-NaV2O5. This model fulfills all symmetry criteria proposed by recent x-ray investigations. We find that this model is not able to describe the occurrence of two well separated magnon lines perpendicular to the ladder direction as observed in inelastic neutron scattering experiments. We suggest further experimental analysis to generally distinguish between models with double reflection or inversion symmetry.

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页码：14613 / 14616

页数：4

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