Interpolation scheme for the Kondo condensation applied to the study of its effect on the transition temperature of a superconductor
J J Prejean; J Souletie; J Teixeira; J J Prejean; CNRS, Grenoble, France; J Souletie; CNRS, Grenoble, France; J Teixeira; CNRS, Grenoble, France
Журнал:
Journal of Physics F: Metal Physics
Дата:
1975-01-01
Аннотация:
The Kondo condensation is pictured in terms of a temperature-dependent effective spin value S<sub>eff</sub>=S xi (T/T<sub>k</sub>). This suggestion is supported experimentally and was shown previously to be coherent with the Hamann's approach to the resistivity problem if J<sub>rho </sub>S=(1/2 pi )sin(2S<sub>eff</sub> pi /(2l+1)) and xi (T/T<sub>k</sub>)=<sup>1</sup>/<sub>2</sub>+(1/ pi )tan<sup>-1</sup>((1/ pi S)lnT/T<sub>k</sub>). Using this determination with the Abrikosov-Gorkov expression, the well known result of Muller-Hartmann and Zittartz (1971) on the depression of the superconducting transition temperature is obtained without any calculation and generalized to S not=<sup>1</sup>/<sub>2</sub>, l not=0.
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