EFFECT OF FORCE-CONSTANT DISORDER ON THE ELIASHBERG FUNCTION OF NB.75ZR.25

被引：5

作者：

GRUNEWALD, G

SCHARNBERG, K

机构：

[1] US DOE,AMES LAB,AMES,IA 50011

[2] IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS,AMES,IA 50011

来源：

SOLID STATE COMMUNICATIONS | 1979年 / 32卷 / 11期

关键词：

D O I：

10.1016/0038-1098(79)90805-6

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

It is shown that the difference between the Eliashberg function of pure Nb and that of Nb.75Zr.25, which is observed at high energies, can be explained in terms of force constant disorder, provided one includes in addition to force constant disorder an overall softening of the lattice and a change in the density of states at the Fermi level. At low energies the Eliashberg function of Nb.75Zr.25 shows a broad shoulder, which cannot be explained by the model employed to describe force constant disorder, and which is probably due to certain phonons becoming soft. © 1979.

引用

页码：955 / 957

页数：3

共 17 条

[1] ELASTIC-CONSTANTS IN NB-ZR ALLOYS FROM ZERO TEMPERATURE TO THE MELTING-POINT - EXPERIMENT AND THEORY [J].