The mixed peierls phase and metallic polyacetylene

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27 Scopus citations


The Peierls condensate with density ρ{variant} near 1 electron per atom is studied and an effective phase-amplitude Hamiltonian is derived. It is shown that a Hartree-Fock theory removes the ρ{variant} → 1 singularity and the phase field exists even at ρ{variant} = 1. The charge carriers are attracting solitons and the lock-in transition is of first order. If ρ{variant} is fixed near 1 the condensate will separate into a commensurate phase (ρ{variant} = 1) and an incommensurate phase (ρ{variant} ≠ 1). These results can account for the unusual features of doped polyacetylene.

Original languageEnglish
Pages (from-to)61-64
Number of pages4
JournalSolid State Communications
Issue number1
StatePublished - 1 Jan 1980
Externally publishedYes

ASJC Scopus subject areas

  • General Chemistry
  • Condensed Matter Physics
  • Materials Chemistry


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