E2g phonon and the elastic constant C44 in hexagonal van der Waals bonded solids

H. Olijnyk, A. P. Jephcoat

    Research output: Contribution to journalArticlepeer-review

    16 Citations (Scopus)


    A simple relation between the frequency of E2g phonon modes and the elastic constant C44, derived previously for hexagonal-close-packed metals, is found to be reasonably valid for crystals of solid He, H2, D2 and N2 at or near normal pressure. Good agreement at high pressure for n-H2 suggests that the connection between C44 and the phonon frequency also holds over a wide compressional range.

    Original languageEnglish
    Pages (from-to)10423-10428
    Number of pages6
    JournalJournal of Physics Condensed Matter
    Issue number50
    Publication statusPublished - Dec 18 2000

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics


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