Abstract
The influence of spin diffusion on the superconducting transition temperature is studied for systems containing a periodic array of ferromagnetic coupled spins as well as for amorphous ferromagnets. The susceptibilities of the spin systems are subject to a sum rule which allows the determination of the spin diffusion coefficient. Detailed numerical calculations of the renormalized gap functions and self-energies on the imaginary frequency axis are performed. With the help of these quantities the superconducting transition temperature is determined. The results show a relatively small decrease ofT c in comparison to static limit calculations.
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Dupont, W., Ziemniak, E. & Usadel, K.D. Spin diffusion in ferromagnetic superconductors. J Low Temp Phys 52, 41–53 (1983). https://doi.org/10.1007/BF00681263
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DOI: https://doi.org/10.1007/BF00681263