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Adsorbate-induced charge density oscillations and many-body effects in STM image

Authors
Journal
Physics Letters A
0375-9601
Publisher
Elsevier
Publication Date
Volume
250
Identifiers
DOI: 10.1016/s0375-9601(98)00820-2
Keywords
  • Condensed Matter

Abstract

Abstract Many-body effects on the STM imaged charge density oscillations around a magnetic adatom on a nonmagnetic metal surface are investigated with the aid of the Newns-Anderson model. It is shown that the many-body effects due to Coulomb interactions between electrons on a localized orbital of the adatom can be observed in the strong temperature dependence of the charge density image on and around the adatom. In addition, it is suggested that the Kondo resonance can be observed in this system as protrusions in the spatially resolved spectroscopic STM images and that the Fano resonance can be also observed as an asymmetry of the differential conductance versus energy (bias) curve about the Fermi level.

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