Tunneling splittings in Mn12-acetate single crystals

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

    Research output: Contribution to journalArticle

    Abstract

    A Landau-Zener multi-crossing method has been used to investigate the tunnel splittings in high-quality Mn12-acetate single crystals in the pure quantum relaxation regime and for fields applied parallel to the magnetic easy axis. With this method several individual tunneling resonances have been studied over a broad range of time scales. The relaxation is found to be non-exponential and a distribution of tunnel splittings is inferred from the data. The distributions suggest that the inhomogeneity in the tunneling rates is due to disorder that produces a non-zero mean value of the average transverse anisotropy, such as in a solvent disorder model. Further, the effect of intermolecular dipolar interaction on the magnetic relaxation has been studied.

    Original languageEnglish (US)
    Pages (from-to)768-774
    Number of pages7
    JournalEPL
    Volume60
    Issue number5
    DOIs
    StatePublished - Dec 2002

    Fingerprint

    tunnels
    acetates
    disorders
    single crystals
    magnetic relaxation
    inhomogeneity
    anisotropy
    interactions

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Del Barco, E., Kent, A. D., Rumberger, E. M., Hendrickson, D. N., & Christou, G. (2002). Tunneling splittings in Mn12-acetate single crystals. EPL, 60(5), 768-774. https://doi.org/10.1209/epl/i2002-00374-9

    Tunneling splittings in Mn12-acetate single crystals. / Del Barco, E.; Kent, A. D.; Rumberger, E. M.; Hendrickson, D. N.; Christou, G.

    In: EPL, Vol. 60, No. 5, 12.2002, p. 768-774.

    Research output: Contribution to journalArticle

    Del Barco, E, Kent, AD, Rumberger, EM, Hendrickson, DN & Christou, G 2002, 'Tunneling splittings in Mn12-acetate single crystals', EPL, vol. 60, no. 5, pp. 768-774. https://doi.org/10.1209/epl/i2002-00374-9
    Del Barco E, Kent AD, Rumberger EM, Hendrickson DN, Christou G. Tunneling splittings in Mn12-acetate single crystals. EPL. 2002 Dec;60(5):768-774. https://doi.org/10.1209/epl/i2002-00374-9
    Del Barco, E. ; Kent, A. D. ; Rumberger, E. M. ; Hendrickson, D. N. ; Christou, G. / Tunneling splittings in Mn12-acetate single crystals. In: EPL. 2002 ; Vol. 60, No. 5. pp. 768-774.
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