Effective polarizabilities in absorbing regions of molecular crystals

R. W. Munn, R. J. Phillips

    Research output: Contribution to journalArticlepeer-review


    A technique is developed to deduce the complex effective polarizability tensor from the complex optical susceptibility tensor of molecular crystals. A simple algebraic treatment is used to compare the polarizability and susceptibility behaviour near an isolated absorption. Peaks in the imaginary part of the effective polarizability are related to the site-shifted molecular transition frequencies of exciton theory. Results for pyromellitic dianhydride (PMDA) illustrate the technique and confirm that it gives realistic polarizabilities as a function of frequency.

    Original languageEnglish
    Pages (from-to)335-341
    Number of pages7
    JournalChemical Physics
    Issue number3
    Publication statusPublished - 15 Apr 1988


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