Theory of the Fano Resonance in the STM Tunneling Density of States due to a Single Kondo Impurity

O. Újsághy, J. Kroha, L. Szunyogh, and A. Zawadowski
Phys. Rev. Lett. 85, 2557 – Published 18 September 2000
PDFExport Citation

Abstract

The conduction electron density of states nearby single magnetic impurities, as measured recently by scanning tunneling microscopy (STM), is calculated, taking into account tunneling into conduction electron states only. The Kondo effect induces a narrow Fano resonance in the conduction electron density of states. The line shape varies with the distance between STM tip and impurity, in qualitative agreement with experiments, but is very sensitive to details of the band structure. For a Co impurity the experimentally observed width and shift of the Kondo resonance are in accordance with those obtained from a combination of band structure and strongly correlated calculations.

  • Received 8 May 2000

DOI:https://doi.org/10.1103/PhysRevLett.85.2557

©2000 American Physical Society

Authors & Affiliations

O. Újsághy1,2, J. Kroha4, L. Szunyogh1, and A. Zawadowski1,2,3

  • 1Department of Physics, Technical University of Budapest, H-1521 Budapest, Hungary
  • 2Research Group of the Hungarian Academy of Sciences, Technical University of Budapest, H-1521 Budapest, Hungary
  • 3Solid State and Optical Research Institute of the Hungarian Academy of Sciences, P.O.B. 49, H-1525 Budapest, Hungary
  • 4Institut für Theorie der Kondensierten Materie, University of Karlsruhe, P.O.B. 6980, D-76128 Karlsruhe, Germany

References (Subscription Required)

Click to Expand
Issue

Vol. 85, Iss. 12 — 18 September 2000

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×