Asymmetric Berry-Phase Interference Patterns in a Single-Molecule Magnet

    Authors

    H. M. Quddusi; J. Liu; S. Singh; K. J. Heroux; E. del Barco; S. Hill;D. N. Hendrickson

    Comments

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    Abbreviated Journal Title

    Phys. Rev. Lett.

    Keywords

    Physics, Multidisciplinary

    Abstract

    A Mn(4) single-molecule magnet displays asymmetric Berry-phase interference patterns in the transverse-field (H(T)) dependence of the magnetization tunneling probability when a longitudinal field (H(L)) is present, contrary to symmetric patterns observed for H(L) = 0. Reversal of H(L) results in a reflection of the transverse-field asymmetry about H(T) = 0, as expected on the basis of the time-reversal invariance of the spin-orbit Hamiltonian which is responsible for the tunneling oscillations. A fascinating motion of Berry-phase minima within the transverse-field magnitude-direction phase space results from a competition between noncollinear magnetoanisotropy tensors at the two distinct Mn sites.

    Journal Title

    Physical Review Letters

    Volume

    106

    Issue/Number

    22

    Publication Date

    1-1-2011

    Document Type

    Article

    Language

    English

    First Page

    4

    WOS Identifier

    WOS:000291093600013

    ISSN

    0031-9007

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