Dear all
We konw some superconductors have a large λ but a low Tc, some have a small λ but a high Tc. Why they are different? From the Eliashberg equations, we kown renormalization function is associate with the λ and Tc. Is it because λ contributes to mass renormalization in system with large λ low Tc? And how does it take action? Is there some quantity I can calculate to evaluate it? Could you share me some references about this question? Thank you!
best regards!
Why some superconductors have a large λ but a low Tc? Is it because mass renormalization dominates in these system?
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