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Fano resonance for Anderson impurity systems.
- Source :
-
Physical review letters [Phys Rev Lett] 2004 Jun 25; Vol. 92 (25 Pt 1), pp. 256602. Date of Electronic Publication: 2004 Jun 24. - Publication Year :
- 2004
-
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 tunneling microscopic experiments, we find that our theory gives a consistent and quantitative account for the Fano resonance line shapes for both Co and Ti impurities on Au or Ag surfaces. The Ti systems are found to be in the mixed valence regime.
Details
- Language :
- English
- ISSN :
- 0031-9007
- Volume :
- 92
- Issue :
- 25 Pt 1
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 15245042
- Full Text :
- https://doi.org/10.1103/PhysRevLett.92.256602