Co-operative Two-Channel Kondo Effect

Abstract

We discuss how the properties of a single-channel Kondo lattice model are modified by additional screening channels. Contrary to current wisdom, additional screening channels appear to constitute a relevant perturbation which destabilizes the Fermi liquid. When a heavy Fermi surface develops, it generates zero modes for Kondo singlets to fluctuate between screening channels of different symmetry, producing a divergent composite pair susceptibility. Additional screening channels couple to these divergent fluctuations, promoting an instability into a state with long-range composite order.

Four pages. Latex with four epsf figures Revised version, emphasizing effect of channel non-conservation

References in corpus (3)

• Phase Diagram of the Two-Channel Kondo Lattice
• Reflections on the One Dimensional Realization of Odd-Frequency Pairing
• Friedel oscillations in the one-dimensional Kondo-lattice model

Cited by in corpus (4)

• Chiral Superconductivity in UTe${}_2$ via Emergent $C_4$ Symmetry and Spin Orbit Coupling
• Local Moments in an Interacting Environment
• Dynamical correlations in the spin-half two-channel Kondo model
• Spectroscopic Evidence for the Direct Involvement of Local Moments in the Pairing Process of the Heavy-Fermion Superconductor CeCoIn${}_5$