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

15 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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