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No.27 (1979/03) >

 
Title :On the Effect of Impurity Correleation on Superconductivity
Authors :Tankei, Katsuichi
Authors alternative :丹慶, 勝市
Issue Date :Mar-1979
Abstract :The effect of correlated impurity spins on superconductivity is investigated by extending the Gor'kov and Rusinov theory and taking account of the effective internal field acting on each localized spins. .The superconducting transition temperature T_c is calculated by using a simpler approximation than Bennemann's, and it is found that a co= existence of superconductivity and impurity ferromagnetism is easily obtainable even if the spin-orbit interaction is weak. The dependence of the critical concentration on the effective internal field and the spin-orbit interaction is also examined. It is concluded that T_c cannot be higher than in the Abtikosov and Gor'kov theory, except in the case when the spin-orbit interaction is sufficiently weak and the s-d exchange coupling constant is considerably large in magnitude.
Type Local :紀要論文
Publisher :琉球大学理工学部
URI :http://hdl.handle.net/20.500.12000/23674
Citation :琉球大学理工学部紀要. 理学編 = Bulletin of Science & Engineering Division, University of Ryukyus. Mathematics & natural sciences no.27 p.39 -56
Appears in Collections:No.27 (1979/03)

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