Evolution of electronic states in the Kondo alloy system

T. Susaki, T. Konishi, A. Sekiyama, T. Mizokawa, A. Fujimori, T. Iwasaki, S. Ueda, T. Matsushita, S. Suga

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Abstract

We have studied the effect of Lu substitution on the Kondo insulator (Formula presented) by high-resolution photoemission. Comparison of the spectra of (Formula presented), (Formula presented), and (Formula presented) reveals that the density of states (DOS) of the B (Formula presented)-derived conduction band near the Fermi level is reduced in (Formula presented) over a rather wide (∼ 40 meV) energy region. Lu substitution (i) recovers the reduced B (Formula presented) DOS, (ii) shifts the Yb (Formula presented)-derived Kondo peak towards higher binding energy, and (iii) decreases the Yb valence. These results are consistently analyzed using the Anderson-impurity model, and imply interaction between the Yb (Formula presented) ions mediated by the Yb (Formula presented)-B (Formula presented) hybridization in (Formula presented).

Original languageEnglish
Pages (from-to)13727-13730
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume56
Issue number21
DOIs
Publication statusPublished - 1997 Jan 1

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Susaki, T., Konishi, T., Sekiyama, A., Mizokawa, T., Fujimori, A., Iwasaki, T., Ueda, S., Matsushita, T., & Suga, S. (1997). Evolution of electronic states in the Kondo alloy system. Physical Review B - Condensed Matter and Materials Physics, 56(21), 13727-13730. https://doi.org/10.1103/PhysRevB.56.13727