Symmetry of magnetic quantum tunneling in single molecule magnet Mn12-acetate

E. Del Barco, A. D. Kent, E. M. Rumberger, D. N. Hendrickson, G. Christou

    Research output: Contribution to journalArticlepeer-review


    The average fourfold symmetry of magnetic quantum tunneling (MQT) in Mn12-acerate was studied and found to be due to equal populations of isomers with biaxial anisotropy that have orthogonal medium magnetic axes. Measurements of the tunneling probability versus transverse field showed evidence for Berry phase effects probably due to a combination of second and fourth order transverse magnetic anisotropies. The results illustrate how subtle changes in the molecule environment can modulate magnetic anisotropy and magnetic quantum tunneling.

    Original languageEnglish (US)
    Article number047203
    Pages (from-to)047203/1-047203/4
    JournalPhysical Review Letters
    Issue number4
    StatePublished - Jul 25 2003

    ASJC Scopus subject areas

    • General Physics and Astronomy


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