Wave-Vector Dependence of the Jahn-Teller Interactions in TmVO4

Jørgen Kjems, W. Hayes, S. H. Smith

    Research output: Contribution to journalJournal articleResearchpeer-review


    The resonant Jahn-Teller coupling of the B2g acoustic phonon and the Zeeman-split ground doublet in TmVO4 has been studied by inelastic neutron scattering. Tuning of the magnetic field provides a means for investigating the wave-vector dependence of the interactions. We find that the coupling is constant in the region where the phonon dispersion is linear, up to 0.4 of the distance to the zone boundary. This agrees with the predictions of a Debye model.
    Original languageEnglish
    JournalPhysical Review Letters
    Issue number16
    Pages (from-to)1089-1092
    Publication statusPublished - 1975


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