INELASTIC NEUTRON-SCATTERING STUDY OF THE LATTICE-DYNAMICS IN CUGEO3

被引：10

作者：

NISHI, M

FUJITA, O

AKIMITSU, J

机构：

[1] AOYAMA GAKUIN UNIV,DEPT PHYS,SETAGAYA KU,TOKYO 157,JAPAN

[2] UNIV TOKYO,INST SOLID STATE PHYS,MINATO KU,TOKYO 106,JAPAN

来源：

PHYSICA B | 1995年 / 210卷 / 02期

关键词：

D O I：

10.1016/0921-4526(94)00922-I

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Inelastic neutron scattering study has been performed on various phonon branches of CuGeO3, single crystal. The coupling mode between LA and LO branches along the [001] direction was observed near 23 meV at (0, 0, 2.2) position. Anomalous broad scattering with a peak near 21 meV and FWHM about 20 meV was measured on the line between (0, 0, 2.3) and (0, 0, 2.5). TO phonon branch along the [001] direction becomes softer near zone center but the energy is independent of temperature.

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页码：149 / 156

页数：8

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