@article{oai:nagoya.repo.nii.ac.jp:00013040,
 author = {MATSUURA, Tamifusa and ICHINOSE, Shin'ichi and NAGAOKA, Yosuke},
 issue = {3},
 journal = {Progress of theoretical physics},
 month = {Mar},
 note = {An approximation is proposed for the magnetic-impurity effect on superconductivity, where the many-body effect of impurities, i.e., the Kondo effect, is fully taken into account. It is an interpolation between the behavior in two limiting cases; i.e., the pair-breaking effect due to magnetic scattering of electrons in the high-temperature and energy region, and the effective repulsive interaction between the Cooper-pair electrons mediated by virtual polarization of impurities in the low-temperature and energy region. Using this approximation, the superconducting transition temperature and the upper critical field are calculated in the presence of impurities. Contrary to the Muller-Hartmann-Zittartz theory, a finite critical concentration is obtained for any value of the Kondo temperature, though it increases rapidly when the Kondo temperature increases., 市ノ瀬愼一氏の博士論文の中の副論文部分　http://hdl.handle.net/2237/14934},
 pages = {713--733},
 title = {Theory of Kondo Effect in Superconductors. I : Transition Temperature and Upper Critical Field},
 volume = {57},
 year = {1977}
}