Exchange Interaction as a Source of Real Space Pairing in High Temperature Superconductors and Heavy Fermions: a Brief Overview

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

Abstracts

EN

We characterize the principal difference between the pairing induced by the kinetic exchange interactions for the Fermi-liquid and spin-liquid phases. In the case of hybridized electrons the Kondo-exchange induced pairing is invoked, whereas for a single narrow-band case kinetic exchange is responsible for the spin singlet pairing. The former interaction is applied to heavy-fermion systems, whereas the latter is employed to the high temperature superconductors. The current situation concerning the applicability of our theoretical models is briefly and critically assessed.

Keywords

EN

71.28.+d; 75.10.Lp; 74.70.Vy

Discipline

• 75.10.Lp: Band and itinerant models
• 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)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1994
• Volume: 85
• Issue: 1
• Pages: 39-52

Dates

published

1994-01

Contributors

author

J. Spałek

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

Identifiers

DOI

10.12693/APhysPolA.85.39