Universal Scaling of Basic Properties of the Heavy-Fermion Superconductors

• Authors: J. Karbowski , J. Spałek
• Languages of publication: EN

Abstracts

EN

We show that the properties of the heavy-electron superconducting state induced by the interorbital kinetic exchange scale with the effective mass renormalization m*/m_{0} ~ 1/T_{K}. Explicitly, the pairing potential J̃ ~ J(m_{0}/m*)ln^{2}(m_{0}/m*), where J is the magnitude of the bare Kondo coupling; the coherence length ξ ~ T_{K}/T_{c} where T_{c} is the transition temperature, whereas the penetration depth λ ~ (m*/m_{0})^{½} so that λ/ξ >> 1. We also determine the scaling of magnetic critical fields.

Keywords

EN

74.70.Tx; 75.30.Mb; 71.28.+d

Discipline

• 75.30.Mb: Valence fluctuation, Kondo lattice, and heavy-fermion phenomena(see also 71.27.+a Strongly correlated electron systems, heavy fermions; for heavy-fermion superconductors, see 74.70.Tx)
• 71.28.+d: Narrow-band systems; intermediate-valence solids(for magnetic aspects, see 75.20.Hr and 75.30.Mb in magnetic properties and materials)
• 74.70.Tx: Heavy-fermion superconductors(for heavy-fermion systems in magnetically ordered materials, see 75.30.Mb; see also 71.27.+a Strongly correlated electron systems, heavy fermions)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1994
• Volume: 85
• Issue: 2
• Pages: 341-345

Dates

published

1994-02

Contributors

author

J. Karbowski

• Institute of Theoretical Physics, Warsaw University, Hoża 69, 00-681 Warszawa, Poland

author

J. Spałek

• Institute of Theoretical Physics, Warsaw University, Hoża 69, 00-681 Warszawa, Poland

Identifiers

DOI

10.12693/APhysPolA.85.341