Surface Diffusive Motion in a Periodic and Asymmetric Potential

    Authors

    G. Pawin; K. L. Wong; K. Y. Kwon; R. J. Frisbee; T. S. Rahman;L. Bartels

    Comments

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    Abstract

    9,10-Dithioanthracene adsorbed on Cu(111) diffuses exclusively along the high-symmetry axis of the molecule-substrate system. Further reduction of the symmetry of the system by asymmetric methylation does not reduce the symmetry of the motion although it has a substantial. effect on the diffusion rate (100-fold reduction) and renders the diffusion barrier asymmetric. This is in contrast to the behavior expected of a classical particle, and it provides a direct single-molecule-scale vista on the validity of The Principle of Microscopic Reversibility first formulated by Tolman in 1924, which despite its fundamental role has attracted little visualization.

    Journal Title

    Journal of the American Chemical Society

    Volume

    130

    Issue/Number

    46

    Publication Date

    1-1-2008

    Document Type

    Article

    First Page

    15244

    Last Page

    +

    WOS Identifier

    WOS:000263311300012

    ISSN

    0002-7863

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