Spectroscopy of transmission resonances through a C60 junction

N. L. Schneider, N. Néel, Nick Papior Andersen, Jing Tao Lu, Mads Brandbyge, J. Kröger, R. Berndt

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    Abstract

    Electron transport through a single C60 molecule on Cu(1 1 1) has been investigated with a scanning tunnelling microscope in tunnelling and contact ranges. Single-C60 junctions have been fabricated by establishing a contact between the molecule and the tip, which is reflected by a down-shift in the lowest unoccupied molecular orbital resonance. These junctions are stable even at elevated bias voltages enabling conductance measurements at high voltages and nonlinear conductance spectroscopy in tunnelling and contact ranges. Spectroscopy and first principles transport calculations clarify the relation between molecular orbital resonances and the junction conductance. Due to the strong molecule-electrode coupling the simple picture of electron transport through individual orbitals does not hold.
    Original languageEnglish
    JournalJournal of Physics: Condensed Matter
    Volume27
    Issue number1
    Pages (from-to)015001
    Number of pages6
    ISSN0953-8984
    DOIs
    Publication statusPublished - 2015

    Bibliographical note

    © 2015 IOP Publishing Ltd

    Keywords

    • Scanning tunnelling microscopy
    • Scanning tunnelling spectroscopy
    • Single-molecule junction
    • Transport calculation

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