Berry-phase blockade in single-molecule magnets

    Authors

    G. Gonzalez;M. N. Leuenberger

    Comments

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    Abbreviated Journal Title

    Phys. Rev. Lett.

    Keywords

    QUANTUM; MAGNETIZATION; INTERFERENCE; RELAXATION; MN-12-ACETATE; SPECTROSCOPY; NANOMAGNETS; PARTICLES; CLUSTERS; FAMILY; Physics, Multidisciplinary

    Abstract

    We formulate the problem of electron transport through a single-molecule magnet (SMM) in the Coulomb blockade regime taking into account topological interference effects for the tunneling of the large spin of a SMM. The interference originates from spin Berry phases associated with different tunneling paths. We show that, in the case of incoherent spin states, it is essential to place the SMM between oppositely spin-polarized source and drain leads in order to detect the spin tunneling in the stationary current, which exhibits topological zeros as a function of the transverse magnetic field.

    Journal Title

    Physical Review Letters

    Volume

    98

    Issue/Number

    25

    Publication Date

    1-1-2007

    Document Type

    Article

    Language

    English

    First Page

    4

    WOS Identifier

    WOS:000247469400042

    ISSN

    0031-9007

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