Magnetic Ordering in Cerium Monochalcogenides: A Test Case for Epsilon-Expansions with n=4

H. R. Ott, Jørgen Kjems, F. Hulliger

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    CeSe and CeTe are found by neutron diffraction to be type-II antiferromagnets with the moment along the propagation vector. The phase transitions are continuous with the critical exponent for the magnetization β=0.36±0.02. This constitutes a violation of the ε-expansion predictions of Bak, Krinsky, and Mukamel, which hitherto have been successfully applied to a number of n>~4 systems and according to which the transitions should be of first order.
    Original languageEnglish
    JournalPhysical Review Letters
    Volume42
    Issue number20
    Pages (from-to)1378-1382
    ISSN0031-9007
    DOIs
    Publication statusPublished - 1979

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