Vibration of Dimer on Ge(001) Surface Excited Coherently by Tunneling Current of Scanning Tunneling Microscopy

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Author(s)

Abstract

The vibration of a dimer on a Ge(001) surface with a high vibrational number excited coherently by tunneling current of scanning tunneling microscopes (STMs), is theoretically investigated. The transformation of the local structures reported in STM experiments is shown to be driven by the dimer vibration excited coherently by the tunneling current of STM. The sample bias voltage of STM above which the transformation to the p(2 x 2) structure is able to be observed in the experiments, is semiquantitatively reproduced by the quasi-one-dimensional character of the π^*-band. We show that the excitation rate has a term that does not decay with the distance from the STM tip for the one-dimensional band. The contrasting difference in shape of the transformed region that depends on the sign of the bias voltage observed in the experiments is explained by the dimensionalities of the π^*-band and the π-band on the Ge(001) surface.

Journal

  • Journal of the Physical Society of Japan

    Journal of the Physical Society of Japan 73(9), 2362-2365, 2004-09-15

    The Physical Society of Japan (JPS)

References:  20

Cited by:  3

Codes

  • NII Article ID (NAID)
    110001954983
  • NII NACSIS-CAT ID (NCID)
    AA00704814
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    00319015
  • NDL Article ID
    7080682
  • NDL Source Classification
    ZM35(科学技術--物理学)
  • NDL Call No.
    Z53-A404
  • Data Source
    CJP  CJPref  NDL  NII-ELS 
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