The appearance of the many-body resonance at the Fermi level in Kondo-lattices

Studing transport and magnetic properties of solid solutions Ce xLa 1−xCu 2Si 2 (0≤ x ≤ 1) and using for CeCu 2Si 2 pressure p as an external parameter, we have observed the continious transition from Kondo-impurity regime ( x « 1 ) to Kondo lattice ( x ⋍ 1, p = 0, ν Ce ≈ 3+ ) and then through the i...

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Bibliographic Details
Published in:Solid state communications 1983-01, Vol.47 (9), p.693-697
Main Authors: Aliev, F.G., Brandt, N.B., Moshchalkov, V.V., Chudinov, S.M.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Fluctuations (noise, chaos, nonequilibrium superconductivity, localization, etc.)
Physics
Superconductivity
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Summary:Studing transport and magnetic properties of solid solutions Ce xLa 1−xCu 2Si 2 (0≤ x ≤ 1) and using for CeCu 2Si 2 pressure p as an external parameter, we have observed the continious transition from Kondo-impurity regime ( x « 1 ) to Kondo lattice ( x ⋍ 1, p = 0, ν Ce ≈ 3+ ) and then through the intermediate valence state (x = 1, 0 < p < po ≠ 0, 3+< νCe < 4+) to metal with ν Ce⋍ 4+ . We have found that all the anomal ous properties of Kondo-lattices (CeCu 2Si 2, CeAl 3, CeAl 2) are caused by the appearance at the Fermi level of the many-body resonance of Abrikosov-Suhl type.
ISSN:0038-1098
1879-2766
DOI:10.1016/0038-1098(83)90636-1