Quantum transport through single atoms and molecules

Authors

  • L. Vitali,

    1. Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
    2. Centro de Física de Materiales CFM-MPC, University of Basque Country, San Sebastián, Spain
    3. IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
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  • P. Wahl,

    Corresponding author
    1. Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
    2. SUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews, Fife, UK
    • Corresponding author: e-mail p.wahl@fkf.mpg.de, Phone: +49 711 689 5218, Fax: +49 711 689 1662

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  • R. Ohmann,

    1. Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
    2. Insitute for Materials Science and Max Bergmann Center of Biomaterials, TU Dresden, Dresden, Germany
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  • J. Bork,

    1. Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
    2. Institut for Fysik og Nanoteknologi, Aalborg Universitet, Aalborg, Denmark
    3. Mekoprint A/S, Støvring, Denmark
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  • Y. Zhang,

    1. Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
    2. Department of Physics, Tsinghua University, Beijing, P. R. China
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  • L. Diekhöner,

    1. Institut for Fysik og Nanoteknologi, Aalborg Universitet, Aalborg, Denmark
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  • K. Kern

    1. Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
    2. Institut de Physique de la Matière Condensée, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
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Abstract

Experiments on quantum transport in a low temperature scanning tunneling microscope provide the possibility to study atomic and molecular contacts with well-defined electrode-geometry at least for one of the contacts, the surface. Here, we show for a number of examples, the strength of transport studies by STM. For single cobalt adatoms, we demonstrate the abrupt change in the width of the Kondo resonance of the cobalt adatom once the contact regime is reached. Differences of the mechanical properties of junctions with cobalt and gold adatoms are discussed. Finally, we show transport measurements and imaging with individual PVBA molecules. pssb201349246-gra-0001

Configurations in which we have investigated quantum transport: through a junction consisting of a single gold adatom, a single cobalt adatom, and a PVBA molecule between the tip of an STM and the surface.

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