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

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

2008-03-10

arxiv.org/abs/0803.1486v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 figures, to appear in PRL

Scientific paper

10.1103/PhysRevLett.100.146403

The Kondo lattice model enlarged by an antiferromagnetic coupling $J_{\rm AF}$ 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 $J_{\rm AF}$=0.

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