Open AccessEFFECTS OF NEXT-NEIGHBOR HOPPING INTERACTIONS ON THE ELECTRONIC BOUND STATES AND LOCALIZED MODES AROUND A SOLITON IN TRANS-(CH)x
Author(s) -
Zhongwei An,
Zhanjie Li,
Yao Kai-Lun
Publication year - 1993
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.42.1532
Subject(s) - physics , bound state , soliton , condensed matter physics , upper and lower bounds , k nearest neighbors algorithm , quantum mechanics , nonlinear system , mathematical analysis , mathematics , artificial intelligence , computer science
We have studied electronic bound states and the localized modes around the soliton after turning on the next-neighbor hopping interaction, based on SSH model. The results show that (1) the electronhole symmetry of the energy band structure implied by SSH model is broken ; (2) the number and location of the bound states trapped by the soliton have changed; (3) a new localized mode have been found; (4)the frequencies of modes have shifted and their localization are strengthened.