Evolution of electronic states in the Kondo alloy system

Physical Review B - Condensed Matter and Materials Physics

Volumn 56, Issue 21, 1997, Pages 13727-13730

  Susaki, T ^a   Konishi, T ^a   Sekiyama, A ^a   Mizokawa, T ^a   Fujimori, A ^a   Iwasaki, T ^b   Ueda, S ^b   Matsushita, T ^b   Suga, S ^b  

^a UNIVERSITY OF TOKYO   (Japan)

^b OSAKA UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0006259743     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.56.13727     Document Type: Article

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27. We calculated the spectra by changing the conduction-band width from 0.3 eV to 3 eV, and found that the calculated Kondo peak was most asymmetric for 0.3 eV although the total B (Formula presented) band width is as large as several eV. The effectively narrow band width would be a consequence of the renormalization of those effects which do not enter the AIM explicitly. Within a single impurity model, O. Gunnarsson and K. Schönhammer [Phys. Rev. B 40, 4160 (1989)] have reported that for low-energy excitations of order (Formula presented), Coulomb interaction between the (Formula presented) and conduction electrons renormalizes the hopping integral so that it has a maximum at (Formula presented) Interaction between different Yb sites mediated by the Yb (Formula presented)-B (Formula presented) hybridization might be another cause of the renormalization.