INHOMOGENEITY OF THE SPATIAL-DISTRIBUTION OF VIBRATIONAL-MODES IN A COMPUTER-MODEL OF AMORPHOUS ARGON

被引：40

作者：

LUCHNIKOV, VA

MEDVEDEV, NN

NABERUKHIN, YI

NOVIKOV, VN

机构：

[1] RUSSIAN ACAD SCI,SIBERIAN BRANCH,INST CHEM KINET & COMBUST,NOVOSIBIRSK 630090,RUSSIA

[2] RUSSIAN ACAD SCI,SIBERIAN BRANCH,INST AUTOMAT & ELECTROMETRY,NOVOSIBIRSK 630090,RUSSIA

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 21期

关键词：

D O I：

10.1103/PhysRevB.51.15569

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The dynamic behavior of atoms in the more regular and more disordered regions in a molecular dynamics model of glassy argon is investigated. Partial velocity autocorrelation functions and their Fourier transforms are calculated for both types of regions. It is found that the more disordered regions are responsible for an excess density of low-frequency motions. The relation of this low-frequency excess to the so-called boson peak in the vibrational spectra of glasses is discussed. © 1995 The American Physical Society.

引用

页码：15569 / 15572

页数：4

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