Universal Scaling of Basic Properties of the Heavy-Fermion Superconductors
J. Karbowski and J. Spałek
Institute of Theoretical Physics, Warsaw University, Hoża 69, 00-681 Warszawa, Poland
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We show that the properties of the heavy-electron superconducting state induced by the interorbital kinetic exchange scale with the effective mass renormalization m*/m0 ~ 1/TK. Explicitly, the pairing potential J̃ ~ J(m0/m*)ln2(m0/m*), where J is the magnitude of the bare Kondo coupling; the coherence length ξ ~ TK/Tc where Tc is the transition temperature, whereas the penetration depth λ ~ (m*/m0)½ so that λ/ξ >> 1. We also determine the scaling of magnetic critical fields.
DOI: 10.12693/APhysPolA.85.341
PACS numbers: 74.70.Tx, 75.30.Mb, 71.28.+d