Electron interaction and soliton energy in conjugated polymer

X. Sun, Y. S. Ma, L. Li, R. T. Fu, Y. Kawazoe

研究成果: Article査読

抄録

The effect of e-e interaction on the creation energy of soliton in polymer has been extensively studied by using the Hubbard model. However, the polymer possesses wide bandwidth, which is even larger than the on-site repulsion U, then it can't be guaranteed that the Hubbard model is always suitable, since this model originates from the systems with narrow band. Actually the Hubbard model only contains the diagonal part of e-e interaction, for wide band system, the off-diagonal part of e-e interaction may have substantial impact. This paper goes beyond the Hubbard model by using a screened Coulomb interaction, which includes both diagonal and off-diagonal parts. Our calculation shows that the effect of e-e interaction on the creation energy of soliton is distinctly different from the result based on the Hubbard model, the physical reason cause this difference is analysed.

本文言語English
ページ(範囲)1035-1036
ページ数2
ジャーナルSynthetic Metals
85
1-3
DOI
出版ステータスPublished - 1997 3 15
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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