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タイトル
  • Influence of atomic tip structure on the intensity of inelastic tunneling spectroscopy data analyzed by combined scanning tunneling spectroscopy, force microscopy, and density functional theory
作成者
    • Okabayashi, Norio
    • Gustafsson, Alexander
    • Peronio, Angelo
    • Paulsson, Magnus
    • Arai, Toyoko
    • Giessibl, Franz J.
権利情報
  • © 2016 American Physical Society.
内容注記
  • Abstract Achieving a high intensity in inelastic scanning tunneling spectroscopy (IETS) is important for precise measurements. The intensity of the IETS signal can vary by up to a factor of 3 for various tips without an apparent reason accessible by scanning tunneling microscopy (STM) alone. Here, we show that combining STM and IETS with atomic force microscopy enables carbon monoxide front-atom identification, revealing that high IETS intensities for CO/Cu(111) are obtained for single-atom tips, while the intensity drops sharply for multiatom tips. Adsorption of the CO molecule on a Cu adatom [CO/Cu/Cu(111)] such that the molecule is elevated over the substrate strongly diminishes the tip dependence of IETS intensity, showing that an elevated position channels most of the tunneling current through the CO molecule even for multiatom tips, while a large fraction of the tunneling current bypasses the CO molecule in the case of CO/Cu(111). © 2016 American Physical Society.
出版者 American Physical Society
日付
    Issued2016-04-13
言語
  • eng
資源タイプ journal article
出版タイプ VoR
資源識別子 HDL http://hdl.handle.net/2297/47069 , URI https://kanazawa-u.repo.nii.ac.jp/records/10840
関連
  • isIdenticalTo DOI https://doi.org/10.1103/PhysRevB.93.165415
収録誌情報
    • NCID AA11187113
    • ISSN 1098-0121
      • Physical Review B - Condensed Matter and Materials Physics
      • 巻93 号16 開始ページ165415
ファイル
コンテンツ更新日時 2024-09-24