STRUCTURAL EVOLUTION OF SPIN-PEIERLS MATERIAL CUGEO3 STUDIED BY NEUTRON-SCATTERING

被引：2

作者：

ARAI, M

FUJITA, M

UBUKATA, K

OHTA, H

MOTOKAWA, M

OTOMO, T

OHYAMA, K

MINO, M

AKIMITSU, J

FUJITA, O

机构：

[1] RES DEV CORP JAPAN,TOKYO 100,JAPAN

[2] TOHOKU UNIV,INST MAT RES,SENDAI,MIYAGI 980,JAPAN

[3] OKAYAMA UNIV,DEPT PHYS,OKAYAMA 700,JAPAN

[4] AOYAMA GAKUIN UNIV,DEPT PHYS,TOKYO 157,JAPAN

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1995年 / 140卷

关键词：

D O I：

10.1016/0304-8853(94)00692-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The crystal structure and phonon dynamics of the spin-Peierls material CuGeO3 have been studied by neutron scattering. We found a large lattice anomaly in the a-b plane, perpendicular to the one-dimensional antiferromagnetic spin chain, above the transition temperature. The phonon modes at 100 meV, of the chain oxygens, show anomalous behavior, consistent with structural change. We therefore conclude that the structural evolution of the chain oxygens in the a-b plane, which mediates the spin-spin interaction along the c-axis, drives the spin-Peierls transition.

引用

页码：1689 / 1690

页数：2