Kondo-stabilised spin liquids and heavy fermion superconductivity

This is the authors' abstract. We don't add key points for this paper.

The authors consider an SU(2) path integral formulation of a Kondo lattice model for heavy fermions that treats the RKKY interaction explicitly. At low temperatures they find the heavy Fermi liquid becomes unstable to the formation of a spin liquid amongst the f spins. Kondo coupling to the spin liquid stabilises it against antiferromagnetism, causing the resonating valence bonds of the spin liquid to occasionally escape into the conduction sea. This process induces off-diagonal resonant scattering in the conduction sea, thereby generating anisotropic superconductivity in the heavy fermion system.