I. M. TangMahidol University2018-02-272018-02-271986-01-01Physical Review B. Vol.33, No.11 (1986), 7575-7582016318292-s2.0-30244432256https://repository.li.mahidol.ac.th/handle/20.500.14594/9878The effects of transition-metal (TM) impurities on the transition temperature of an anisotropic superconductor when the TM impurities give rise to local spin fluctuations (LSFs) are studied. The effective electron-electron interaction between the Cooper-pair electrons is taken to be the sum of a separable anisotropic electron-phonon potential and the repulsive Coulomb potential existing between the electrons. The multiplicative renormalization technique is used to treat the Coulomb repulsion between the d electrons of opposite spins which localize about an impurity site. It is found that the LSFs influence the anisotropic superconductors in two ways. They cause a decrease in the anisotropy and an increase in the Coulomb pseudopotential. Numerical calculations of the decrease in Tc are carried out using parameters appropriate to the dilute AlMn superconductors. © 1986 The American Physical Society.Mahidol UniversityPhysics and AstronomyArticleSCOPUS10.1103/PhysRevB.33.7575