Distribution of internal transverse magnetic fields in a Mn 12-based single molecule magnet

E. Del Barco, A. D. Kent, N. E. Chakov, L. N. Zakharov, A. L. Rheingold, D. N. Hendrickson, G. Christou

    Research output: Contribution to journalArticle

    Abstract

    A distribution of internal transverse magnetic fields has been observed in single molecule magnet Mn12-BrAc in the pure magnetic quantum tunneling (MQT) regime. Magnetic relaxation experiments at 0.4 K are used to produce a hole in the distribution of transverse fields whose angle and depth depend on the orientation and amplitude of an applied transverse "digging field." The presence of such transverse magnetic fields can explain the main features of resonant MQT in this material, including the tunneling rates, the form of the relaxation and the absence of tunneling selection rules. We propose a model in which the transverse fields originate from a distribution of tilts of the molecular magnetic easy axes.

    Original languageEnglish (US)
    Article number020411
    Pages (from-to)204111-204114
    Number of pages4
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume69
    Issue number2
    StatePublished - Jan 2004

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    Magnets
    magnets
    Magnetic fields
    Magnetic relaxation
    Molecules
    magnetic fields
    molecules
    magnetic relaxation
    Experiments

    ASJC Scopus subject areas

    • Condensed Matter Physics

    Cite this

    Del Barco, E., Kent, A. D., Chakov, N. E., Zakharov, L. N., Rheingold, A. L., Hendrickson, D. N., & Christou, G. (2004). Distribution of internal transverse magnetic fields in a Mn 12-based single molecule magnet. Physical Review B - Condensed Matter and Materials Physics, 69(2), 204111-204114. [020411].

    Distribution of internal transverse magnetic fields in a Mn 12-based single molecule magnet. / Del Barco, E.; Kent, A. D.; Chakov, N. E.; Zakharov, L. N.; Rheingold, A. L.; Hendrickson, D. N.; Christou, G.

    In: Physical Review B - Condensed Matter and Materials Physics, Vol. 69, No. 2, 020411, 01.2004, p. 204111-204114.

    Research output: Contribution to journalArticle

    Del Barco, E, Kent, AD, Chakov, NE, Zakharov, LN, Rheingold, AL, Hendrickson, DN & Christou, G 2004, 'Distribution of internal transverse magnetic fields in a Mn 12-based single molecule magnet', Physical Review B - Condensed Matter and Materials Physics, vol. 69, no. 2, 020411, pp. 204111-204114.
    Del Barco E, Kent AD, Chakov NE, Zakharov LN, Rheingold AL, Hendrickson DN et al. Distribution of internal transverse magnetic fields in a Mn 12-based single molecule magnet. Physical Review B - Condensed Matter and Materials Physics. 2004 Jan;69(2):204111-204114. 020411.
    Del Barco, E. ; Kent, A. D. ; Chakov, N. E. ; Zakharov, L. N. ; Rheingold, A. L. ; Hendrickson, D. N. ; Christou, G. / Distribution of internal transverse magnetic fields in a Mn 12-based single molecule magnet. In: Physical Review B - Condensed Matter and Materials Physics. 2004 ; Vol. 69, No. 2. pp. 204111-204114.
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    AU - Rheingold, A. L.

    AU - Hendrickson, D. N.

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