Effect of Transition-Metal Impurities in Superconductors: An Extension of Yoshimori's Theory | Zendy

K. Machida | Zendy

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Effect of Transition-Metal Impurities in Superconductors: An Extension of Yoshimori's Theory

Author(s) -

K. Machida

Publication year - 1974

Publication title -

progress of theoretical physics

Language(s) - English

Resource type - Journals

eISSN - 1347-4081

pISSN - 0033-068X

DOI - 10.1143/ptp.51.1667

Subject(s) - superconductivity , condensed matter physics , physics , impurity , classification of discontinuities , ground state , extension (predicate logic) , metal , quantum mechanics , materials science , computer science , programming language , mathematical analysis , mathematics , metallurgy

The Anderson model in a superconductor is investigated on the basis of a variational theory proposed by Y oshiinori for a normal metal. The depression of the order parameter and the critical concentration are calculated in the ground state. They do not show any discontinuities nor drastic change near the transition region between the magnetic and the non-magnetic states. Their behavior qualitatively agrees with experiments made for superconductors containing transition-metal impurities.

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