Soliton energetics in Peierls-Hubbard models

D. K. Campbell, T. A. DeGrand, S. Mazumdar

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We study the effect of electron-electron correlations on the energetics of solitons in electron-phonon models of quasi one-dimensional materials. In these combined Peierls-Hubbard models, by use of quantum Monte Carlo techniques, we (1) establish that the ground state of an odd chain, singly charged or neutral, is a soliton; (2) calculate neutral-soliton creation energies; and (3) prove that "soliton doping" persists in the presence of correlations. We discuss the relevance of our results for trans-polyacetylene.

Original languageEnglish (US)
Pages (from-to)1717-1720
Number of pages4
JournalPhysical review letters
Issue number19
StatePublished - Jan 1 1984
Externally publishedYes


ASJC Scopus subject areas

  • Physics and Astronomy(all)

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