Singlet Ground State Magnetism: II. Magnetic Excitons in Paramagnetic TbP

A. Loidl, K. Knorr, Jørgen Kjems, B. Liithi

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    The magneticGamma 1 –Gamma 4 exciton of the singlet ground state system TbP has been studied by inelastic neutron scattering above the antiferromagnetic ordering temperature. Considerable dispersion and a pronounced splitting was found in the [100] and [110] directions. Both the band width and the splitting increased rapidly as the transition temperature was approached in accordance with the predictions of the RPA-theory. The dispersion is analysed in terms of a phenomenological model using interactions up to the fourth nearest neighbour.
    Original languageEnglish
    JournalZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER
    Volume35
    Issue number3
    Pages (from-to)253-259
    ISSN0722-3277
    DOIs
    Publication statusPublished - 1979

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