TY - JOUR
T1 - Competition and transitions of the ground state properties of the impurity Anderson model with multi-electron occupancy
AU - Sakai, O.
AU - Suzuki, S.
AU - Shimizu, Y.
N1 - Funding Information:
Acknowledgements-We would like to thank to Professor H. Shiba for stimulation and valuable comments. This work is supportedp artly by Grants-in Aids No. 06244104a nd No. 07640498f rom the Ministry of Education, Science and Culture. The numerical computation was performed at the Computer Center of Tohoku University, the Computer Center of Institute for Molecular Science (Okazaki National Research Institute) and the Computer Center of Institute for Solid State Physics (University of Tokyo). We dedicatet his reportt o the late retiredP rofessorE. Hirahara.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1997/3
Y1 - 1997/3
N2 - To study the Kondo effect of the multi-electron occupancy systems (KEMES), the impurity Anderson model with tetrahedral crystalline field and intraatomic exchange interaction is investigated as an example. The low energy properties and the magnetization are examined based on Wilson's numerical renormalization group method. When the hybridization strength is increased by fixing the lowest atomic state as the non-Kramers doublet (f2)Γ5, the ground state shows successively the doublet-like, the crystalline-field-singlet-like and f0-singlet-like properties. The first one is the non-Fermi liquid state of the two-channel Kondo type. The last two are Fermi-liquid states, separated by transition with anomalous lowering of the low energy scale. These results suggest more varieties of KEMES than those previously expected.
AB - To study the Kondo effect of the multi-electron occupancy systems (KEMES), the impurity Anderson model with tetrahedral crystalline field and intraatomic exchange interaction is investigated as an example. The low energy properties and the magnetization are examined based on Wilson's numerical renormalization group method. When the hybridization strength is increased by fixing the lowest atomic state as the non-Kramers doublet (f2)Γ5, the ground state shows successively the doublet-like, the crystalline-field-singlet-like and f0-singlet-like properties. The first one is the non-Fermi liquid state of the two-channel Kondo type. The last two are Fermi-liquid states, separated by transition with anomalous lowering of the low energy scale. These results suggest more varieties of KEMES than those previously expected.
KW - D. Kondo effects
KW - D. heavy fermions
KW - D. valence fluctuations
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U2 - 10.1016/S0038-1098(96)00739-9
DO - 10.1016/S0038-1098(96)00739-9
M3 - Article
AN - SCOPUS:0031096394
VL - 101
SP - 791
EP - 796
JO - Solid State Communications
JF - Solid State Communications
SN - 0038-1098
IS - 11
ER -