Phonon line shapes and excitation energies

被引：120

作者：

Fak, B

Dorner, B

机构：

[1] INST MAX VON LAUE PAUL LANGEVIN,F-38042 GRENOBLE 9,FRANCE

[2] CEA,DEPT RECH FONDAMENTALE MAT CONDENSEE,SPSMS,MDN,F-38054 GRENOBLE 9,FRANCE

来源：

PHYSICA B | 1997年 / 234卷

关键词：

scattering functions; phonons;

D O I：

10.1016/S0921-4526(97)00121-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The basis for and consistency of fitting functions for anharmonic phonons in condensed matter as observed by inelastic neutron scattering is examined. We suggest that solids and liquids can be described by the same fitting function. The interpretation of the parameter that represents the excitation energy is discussed using sum rules and other physical arguments, and its importance is illustrated for a few real systems.

引用

页码：1107 / 1108

页数：2

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