TY - JOUR
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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U2 - 10.1103/PhysRevB.56.13727
DO - 10.1103/PhysRevB.56.13727
M3 - Article
AN - SCOPUS:0006259743
SN - 1098-0121
VL - 56
SP - 13727
EP - 13730
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 21
ER -