Quantum lattice fluctuations in nearly degenerate quasi one-dimensional polymers

C. Q. Wu, Y. Kawazoe

研究成果: Article査読

抄録

It has been shown that the linear and nonlinear optical behaviors are quite different for degenerate and nondegenerate polymers. Quantum lattice fluctuations are believed to play an important role in the understanding of these optical properties. In this work, we study the quantum lattice fluctuations in a nondegenerate conjugated polymer by means of a modified Su-Schrieffer-Heeger-type model Hamiltonian. We first integrate out the electronic variables of the partition function and obtain an effective phonon action. Then an equation for the phonon order parameter is derived within a one-loop approximation. We find that the quantum lattice fluctuations is reduced by the nondegenerate ground state, especially in the weak electron-phonon coupling. This result is compatible with the optical properties of degenerate and nondegenerate polymers.

本文言語English
ページ(範囲)1151-1152
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

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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