Robust d-wave Pairing Correlations in the Heisenberg Kondo Lattice Model

Abstract

The Kondo lattice model enlarged by an antiferromagnetic coupling $J_{\mathrm{AF}}$ between the localized spins is here investigated using computational techniques. Our results suggest the existence of a d-wave superconducting phase close to half-filling mediated by antiferromagnetic fluctuations. This establishes a closer connection between theory and heavy fermion experiments than currently provided by the standard Kondo lattice model with $J_{\mathrm{AF}}$=0.

4 pages, 4 figures, to appear in PRL

References in corpus (5)

• Competing Ferromagnetic and Charge-Ordered States in Models for Manganites: the Origin of the CMR Effect
• Dimerization induced by the RKKY interaction
• Orbital-Controlled Superconductivity in f-Electron Systems
• Absence of a true long-range orbital order in a two-leg Kondo ladder
• Phase Diagram of the Two-Leg Kondo Ladder