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

doi:10.1103/PhysRevB.56.13727

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

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

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 language	English
Pages (from-to)	13727-13730
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	56
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevB.56.13727
Publication status	Published - 1997
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Evolution of electronic states in the Kondo alloy system",

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).",

author = "T. Susaki and T. Konishi and A. Sekiyama and T. Mizokawa and A. Fujimori and T. Iwasaki and S. Ueda and T. Matsushita and S. Suga",

year = "1997",

doi = "10.1103/PhysRevB.56.13727",

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T1 - Evolution of electronic states in the Kondo alloy system

AU - Susaki, T.

AU - Konishi, T.

AU - Sekiyama, A.

AU - Mizokawa, T.

AU - Fujimori, A.

AU - Iwasaki, T.

AU - Ueda, S.

AU - Matsushita, T.

AU - Suga, S.

PY - 1997

Y1 - 1997

N2 - 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).

AB - 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).

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Evolution of electronic states in the Kondo alloy system

Abstract

ASJC Scopus subject areas

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