ANHARMONIC GAP MODES IN A PERFECT ONE-DIMENSIONAL DIATOMIC LATTICE FOR STANDARD 2-BODY NEAREST-NEIGHBOR POTENTIALS

被引：91

作者：

KISELEV, SA ^{[1
]}

BICKHAM, SR ^{[1
]}

SIEVERS, AJ ^{[1
]}

机构：

[1] CORNELL UNIV,CTR MAT SCI,ITHACA,NY 14853

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.48.13508

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Two-body potentials of the Toda, Born-Mayer, Lennard-Jones, and Morse type are used in a one-dimensional diatomic lattice to demonstrate both analytically and numerically that stable anharmonic gap modes are a general feature of these perfect lattices. Associated with each vibrational mode is a localized dc lattice expansion, which forms an integral part of this dynamical configuration.

引用

页码：13508 / 13511

页数：4