Localized phonons in a pristine polyacene chain

被引：6
|
作者：
Wu, YJ [1 ]
Zhao, H
An, Z
Wu, CQ
机构：
[1] Fudan Univ, Res Ctr Theoret Phys, Shanghai 200433, Peoples R China
[2] Fudan Univ, Surface Phys Lab, Shanghai 200433, Peoples R China
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2002年 / 14卷 / 20期
关键词：
D O I：
10.1088/0953-8984/14/20/101
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Within an extended Su-Schrieffer-Heeger model, we investigate the localized phonons in a pristine polyacene chain, in which there is an interchain-coupled neutral soliton of D-2h symmetry. In addition to three pairs of twofold-degenerate edge modes (three infrared active and three Raman active), we found in total nine localized modes, among which four (three B-2u and one B-3u) modes are infrared active and the others (two A(g) and three B-1g) modes are Raman active.
引用
收藏
页码：L341 / L348
页数：8
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