Kondo effect in CexLa1-xCu2.05Si intermetallics
Kondo effect in CexLa1-xCu2.05Si intermetallics
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CexLa1-xCu2.05Si 金属间化合物中的近藤效应
DOI：
10.1103/physrevb.64.184438
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发表时间：
2001
影响因子：
3.7
通讯作者：
F. Steglich
中科院分区：
文献类型：
--
作者：
I. Aviani;M. Miljak;V. Zlatić;K. Schotte;C. Geibel;F. Steglich
The magnetic susceptibility and susceptibility anisotropy of the quasibinary alloy system ${\mathrm{Ce}}_{x}{\mathrm{La}}_{1\ensuremath{-}x}{\mathrm{Cu}}_{2.05}{\mathrm{Si}}_{2}$ have been studied for low concentration of Ce ions. The single-ion description is found to be valid for $xl~0.09.$ The experimental results are discussed in terms of the degenerate Coqblin-Schrieffer model with a crystalline electric field splitting \ensuremath{\Delta}\ensuremath{\simeq}330 K. The properties of the model, obtained by combining the lowest-order scaling and the perturbation theory, provide a satisfactory description of the experimental data down to 30 K. The experimental results between 20 K and 2 K are explained by the exact solution of the Kondo model for an effective doublet.
The magnetic susceptibility and susceptibility anisotropy of the quasibinary alloy system ${\mathrm{Ce}}_{x}{\mathrm{La}}_{1\ensuremath{-}x}{\mathrm{Cu}}_{2.05}{\mathrm{Si}}_{2}$ have been studied for low concentration of Ce ions. The single-ion description is found to be valid for $xl~0.09.$ The experimental results are discussed in terms of the degenerate Coqblin-Schrieffer model with a crystalline electric field splitting \ensuremath{\Delta}\ensuremath{\simeq}330 K. The properties of the model, obtained by combining the lowest-order scaling and the perturbation theory, provide a satisfactory description of the experimental data down to 30 K. The experimental results between 20 K and 2 K are explained by the exact solution of the Kondo model for an effective doublet.