Estimation of electronic and structural influence on the thermal magnetic properties of clusters

P.-A. Lindgård, P.V. Hendriksen

    Research output: Contribution to journalJournal articleResearch

    Abstract

    Using an effective Heisenberg model for clusters the spin-wave spectrum is calculated by direct diagonalization. The inclusion of a nonuniform magnetization profile at zero temperature, nonuniform exchange interactions as a result of structural relaxations, longer-range interactions, and of magnetic surface anisotropy have been studied. Very small effects are found on the thermal magnetic properties relative to those predicted for the simple nearest-neighbor Heisenberg model by Hendriksen, Linderoth, and Lindgard [J. Phys. C 31, 5675 (1993); Phys. Rev. B 48, 7259 (1993)].
    Original languageEnglish
    JournalPhysical Review B
    Volume49
    Issue number17
    Pages (from-to)12291-12294
    ISSN0163-1829
    DOIs
    Publication statusPublished - 1994

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