The Fano resonance for Anderson impurity systems

Abstract

We present a general theory for the Fano resonance in Anderson impurity systems. It is shown that the broadening of the impurity level leads to an additional and important contribution to the Fano resonance around the Fermi surface, especially in the mixed valence regime. This contribution results from the interference between the Kondo resonance and the broadened impurity level. Being applied to the scanning tunnelling microscopic experiments, we find that our theory gives a consistent and quantitative account for the Fano resonance lineshapes for both Co and Ti impurities on Au or Ag surfaces. The Ti systems are found to be in the mixed valence regime.

4 pages, 5 figures, published version

References in corpus (8)

• Low Temperature Transport through a Quantum Dot: The Anderson Model out of Equilibrium
• The Anderson Model out of Equilibrium: Non-Crossing-Approximation Approach to Transport through a Quantum Dot
• Transport Coefficients of the Anderson Model via the Numerical Renormalization Group
• Theory of the Fano Resonance in the STM Tunneling Density of States due to a Single Kondo Impurity
• Nonequilibrium theory of scanning tunneling spectroscopy via adsorbate resonances: nonmagnetic and Kondo impurities
• Theory of Scanning Tunneling Spectroscopy of a Magnetic Adatom on a Metallic Surface
• Equation of motion approach to the solution of Anderson model
• STM conductance of Kondo impurities on open and structured surfaces

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• Kondo screening of Andreev bound states in an N-QD-S system
• Kondo effect of an adatom in graphene and its scanning tunneling spectroscopy
• Extended dissipaton equation of motion for electronic open quantum systems: Application to the Kondo impurity model
• Tunable Fano-Kondo resonance in side-coupled double quantum dot system
• Spin-dependent Fano resonance induced by conducting chiral helimagnet contained in a quasi-one-dimensional electron waveguide
• Inelastic Kondo-Andreev tunnelings in a vibrating quantum dot
• Fano resonance in a normal metal/ferromagnet-quantum dot-superconductor device
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