Soliton-induced modification of the speed of sound in quasi-one-dimensional molecular crystals

被引：15

作者：

Tekic, J ^{[1
]}

Ivic, Z ^{[1
]}

Przulj, Z ^{[1
]}

机构：

[1] Vinca Inst Nucl Sci, Theoret Phys Dept 020, YU-11001 Belgrade, Serbia, Yugoslavia

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1998年 / 10卷 / 07期

关键词：

D O I：

10.1088/0953-8984/10/7/003

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The influence of the anharmonic vibron-phonon coupling, arising on account of a 'dressing' effect, on the characteristics of the lattice subsystem in quasi-one-dimensional molecular crystals was examined within the 'pseudo-harmonic' phonon approximation. It was found that solitons could induce specific modifications of the speed of sound which shows a temperature dependence quite different to that in the case of the linear excitations. The possibility of an indirect experimental verification of the existence of solitons in molecular chains is suggested on the basis of these predictions.

引用

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页码：1487 / 1494

页数：8

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