ASYMMETRIC INTRINSIC LOCALIZED MODES IN A HOMOGENEOUS LATTICE WITH CUBIC AND QUARTIC ANHARMONICITY

被引：76

作者：

HUANG, GX

SHI, ZP

XU, ZX

机构：

[1] CHINA CTR ADV SCI & TECHNOL,WORLD LAB,POB 8730,BEIJING 100080,PEOPLES R CHINA

[2] ACAD SINICA,INT CTR MAT PHYS,SHENYANG 110015,PEOPLES R CHINA

[3] NYU,DEPT PHYS,NEW YORK,NY 10003

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 21期

关键词：

D O I：

10.1103/PhysRevB.47.14561

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The intrinsic localized modes in a homogeneous nonlinear one-dimensional lattice are investigated by use of the method of multiple scales combined with a quasidiscreteness approximation. It is shown that, in the presence of cubic anharmonicity, some asymmetric intrinsic localized modes with zero-group velocity can exist in the lattice and that the eigenfrequencies of these localized modes are above the top of the harmonic frequency band.

引用

页码：14561 / 14564

页数：4

共 12 条

[1]

Ablowitz M, 1985, SOLITONS INVERSE SCA

[2]

BARKER AS, 1975, REV MOD PHYS S, V47, P2

[3] INTRINSIC LOCALIZED MODES IN A MONATOMIC LATTICE WITH WEAKLY ANHARMONIC NEAREST-NEIGHBOR FORCE-CONSTANTS [J].