Vibrational spectra in glasses

被引：11

作者：

Grigera, TS

Martín-Mayor, V

Parisi, G

Verrocchio, P

机构：

[1] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[2] Ist Nazl Fis Nucl, Sez Roma, Unita Roma, I-00185 Rome, Italy

[3] Univ Trent, Dipartimento Fis, I-38050 Trento, Italy

[4] Ist Nazl Fis Mat, Unita Trento, I-38050 Trento, Italy

来源：

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES | 2002年 / 82卷 / 06期

关键词：

D O I：

10.1080/13642810110084588

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The findings of X-ray and neutron scattering experiments on amorphous systems are interpreted within the framework of the theory of Euclidean random matrices. This allows us to take into account the topological nature of the disorder. a key ingredient which strongly affects the vibrational spectra of those systems. We present a resummation scheme for a perturbative expansion in the inverse particle density. allowing an accurate analytical computation of the dynamic structure factor within the range of densities encountered in real systems.

引用

页码：637 / 649

页数：13

共 42 条

[1] Diffusons, locons and propagons: character of atomic vibrations in amorphous Si [J].