Cu(111)表面に吸着した(CH_3S)_2の単分子解離反応およびCH_3Sの単分子ホッピング運動  [in Japanese] Dissociation Reaction of an Isolated (CH_3S)_2 Molecule and Hopping Motion of an Isolated CH_3S Molecule Adsorbed on Cu(111)  [in Japanese]

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Author(s)

Abstract

The S-S bond dissociation in an isolated (CH<SUB>3</SUB>S)<SUB>2</SUB> molecule and the hopping motion of an isolated CH<SUB>3</SUB>S molecule on Cu(111) surface were induced by the injection of tunneling electrons from the tip of a scanning tunneling microscope (STM). From the bias voltage dependence for the S-S bond dissociation probability, it was shown that the vibrational excitations of a C-H stretching mode and a combination mode of C-H stretching and S-S stretching in the molecule are responsible for the dissociation reaction induced by inelastically tunneled electrons, respectively. From the bias voltage dependence for the hopping probability of an isolated CH<SUB>3</SUB>S molecule on Cu(111) surface, it was shown that the vibrational excitation of C-S stretching in the molecule is strongly contributed to this motion. In the present study, the projected density of state and molecular orbital were also calculated for each adsorption system. From these results, we propose that the molecular vibration induced by the injection of tunnel electrons can be explained by the resonant mechanism.

Journal

  • Hyomen Kagaku

    Hyomen Kagaku 27(7), 401-407, 2006-07-10

    The Surface Science Society of Japan

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Codes

  • NII Article ID (NAID)
    10017617472
  • NII NACSIS-CAT ID (NCID)
    AN00334149
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    03885321
  • NDL Article ID
    8034067
  • NDL Source Classification
    ZM35(科学技術--物理学)
  • NDL Call No.
    Z15-379
  • Data Source
    CJP  NDL  J-STAGE 
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