Excitonic polarons in molecular crystals

P. M. Chaikin, A. F. Garito, A. J. Heeger

    Research output: Contribution to journalArticle

    Abstract

    Band narrowing and band shifts due to excitonic-polaron formation are considered for an electronically polarizable medium. Experimental evidence of such effects in molecular crystals is cited. The central result is that the electron-exciton interaction in the strong-coupling regime leads not only to an indirect attractive electron-electron interaction, but also because of small-polaron formation leads to severe band narrowing. This band narrowing tends to favor the insulating state. The implications of the excitonic polaron for the metal-insulator transition, organic semiconductors, and the question of the possible existence of superconductivity in organic molecular crystals are discussed.

    Original languageEnglish (US)
    Pages (from-to)4966-4969
    Number of pages4
    JournalPhysical Review B
    Volume5
    Issue number12
    DOIs
    StatePublished - 1972

    Fingerprint

    Molecular crystals
    Gene Conversion
    Polarons
    polarons
    Electron-electron interactions
    Metal insulator transition
    Semiconducting organic compounds
    Superconductivity
    Excitons
    crystals
    Electrons
    organic semiconductors
    electron scattering
    electrons
    superconductivity
    excitons
    insulators
    shift
    metals
    interactions

    ASJC Scopus subject areas

    • Condensed Matter Physics

    Cite this

    Chaikin, P. M., Garito, A. F., & Heeger, A. J. (1972). Excitonic polarons in molecular crystals. Physical Review B, 5(12), 4966-4969. https://doi.org/10.1103/PhysRevB.5.4966

    Excitonic polarons in molecular crystals. / Chaikin, P. M.; Garito, A. F.; Heeger, A. J.

    In: Physical Review B, Vol. 5, No. 12, 1972, p. 4966-4969.

    Research output: Contribution to journalArticle

    Chaikin, PM, Garito, AF & Heeger, AJ 1972, 'Excitonic polarons in molecular crystals', Physical Review B, vol. 5, no. 12, pp. 4966-4969. https://doi.org/10.1103/PhysRevB.5.4966
    Chaikin, P. M. ; Garito, A. F. ; Heeger, A. J. / Excitonic polarons in molecular crystals. In: Physical Review B. 1972 ; Vol. 5, No. 12. pp. 4966-4969.
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