Author:
Zhang Da-Cheng ,Wang Lu-Xia ,Liu De-Sheng ,Han Sheng-Hao ,Xie Shi-Jie ,
Abstract
In the frame work of the tight-binding approximation, the effect of defects and disorder on the vibrational modes in one-dimensional systems was studied through a random distribution model. It was found that the Goldstone mode of a so liton or polaron is pinned and its frequency is shifted up to a finite value. Th e weak mode g4 of a soliton is enhanced. The staggered modes keep the ir localization even if there is a large lattice fluctuation. Some new modes appear when the perfect soliton or polaron configuration is disturbed.
Publisher
Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences
Subject
General Physics and Astronomy
Cited by
3 articles.
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