Vibrational models for the Boson peak

被引：6

作者：

Bunde, A ^{[1
]}

Kantelhardt, JW ^{[1
]}

Russ, S ^{[1
]}

机构：

[1] Univ Giessen, Inst Theoret Phys, D-35392 Giessen, Germany

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2002年 / 307卷

关键词：

D O I：

10.1016/S0022-3093(02)01446-1

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We investigate different vibrational model systems with randomly distributed spring constants that characterize the bonds between nearest-neighbor particles, and calculate numerically the density of states and the specific heat of these systems. Recently, a model system, where the spring constants f were chosen from a distribution P(f) alpha 1/f above a cut-off value f(min) > 0 has been shown to reproduce several important features of the Boson peak in glasses. Here, we compare this model to a model system with a binary distribution of spring constants. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：96 / 102

页数：7

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