Open AccessBOUNDARY CONDITIONS AND THE STABILITY OF ONE-DIMENSIONAL CONDUCTING POLYMERS
Author(s) -
Jianhua Wei,
XIE SHI-JIE,
Mei Liang-Mo
Publication year - 1997
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.46.747
Subject(s) - polyacetylene , boundary value problem , polymer , boundary (topology) , materials science , work (physics) , chain (unit) , stability (learning theory) , absorption (acoustics) , chemical physics , condensed matter physics , molecular physics , physics , thermodynamics , composite material , mathematical analysis , quantum mechanics , computer science , mathematics , machine learning
The stabilities of one-dimensional conducting polymer chains with finte lengths have been studied in the frame work of the SSH tight-binding model.Three kinds of boundary conditions have been proposed to stabilize the dimerized structure of the chains.It was found that the natural boundary condition or the end-fixed boundary condition is applicable for getting a result to fit the observed photo-absorption of polyacetylene with short (N<20) lengths.