Superconductivity in the Kondo lattice model

Abstract

We study the Kondo lattice model with additional attractive interaction between the conduction electrons within the dynamical mean-field theory using the numerical renormalization group to solve the effective quantum impurity problem. In addition to normal-state and magnetic phases we also allow for the occurrence of a superconducting phase. In the normal phase we observe a very sensitive dependence of the low-energy scale on the conduction-electron interaction. We discuss the dependence of the superconducting transition on the interplay between attractive interaction and Kondo exchange.

Submitted to ICM 2009 Conference Proceedings

References in corpus (6)

• Fermi-liquid instabilities at magnetic quantum phase transitions
• The numerical renormalization group method for quantum impurity systems
• The low-energy scale of the periodic Anderson model
• Protracted Screening in the Periodic Anderson Model
• Magnetic phases in the correlated Kondo-lattice model
• Competition between phonon superconductivity and Kondo screening in mixed valence and heavy fermion compounds

Cited by in corpus (6)

• Anderson lattice with explicit Kondo coupling: general features and the field-induced suppression of heavy-fermion state in ferromagnetic phase
• Low-energy properties of the Kondo lattice model
• Non-collinear order and gapless superconductivity in s-wave magnetic superconductors
• Superconducting Correlations in the One-Dimensional Kondo Lattice Models under Magnetic Fields
• Interplay between charge, magnetic and superconducting order in a Kondo lattice with an attractive Hubbard interaction
• Reentrant $s$-wave superconductivity in the periodic Anderson model with attractive conduction band Hubbard interaction