Tunneling spectroscopy and manipulation of a single C2 H2 molecule on a Cu(111) surface

Yasuaki Konishi, Yasuyuki Sainoo, Ken Kanazawa, Shoji Yoshida, Atsushi Taninaka, Osamu Takeuchi, Hidemi Shigekawa

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    9 Citations (Scopus)

    Abstract

    The adsorption structure of a single C2 H2 molecule on a Cu(111) surface was analyzed by scanning tunneling microscopy (STM) and inelastic tunneling spectroscopy (IETS). The STM result showed a twofold rotational symmetry, in agreement with the structural model previously proposed. The IETS spectrum measured near a monatomic step exhibited peaks related to the C-H stretch mode, which were as strong as what had been reported for C2 H2 on a Cu(100) substrate, where the amplitude of the electronic standing wave that causes background fluctuation of spectra could be considerably reduced by the reduction of scattering at the step. Chemical reactions induced by electron injection were also observed by IETS analysis near steps.

    Original languageEnglish
    Article number193410
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume71
    Issue number19
    DOIs
    Publication statusPublished - 2005 Dec 1

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

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