Destruction of the Kondo effect in a multi-channel Bose-Fermi Kondo model

Abstract

We consider the SU(N) x SU(kappa N) generalization of the spin-isotropic Bose-Fermi Kondo model in the limit of large N. There are three fixed points corresponding to a multi-channel non-Fermi liquid phase, a local spin-liquid phase, and a Kondo-destroying quantum critical point (QCP). We show that the QCP has strong similarities with its counterpart in the single-channel model, even though the Kondo phase is very different from the latter. We also discuss the evolution of the dynamical scaling properties away from the QCP.

2 papes, 2 figures, submittet to SCES'04

References in corpus (3)

• Local fluctuations in quantum critical metals
• Critical local moment fluctuations in the Bose-Fermi Kondo model
• Quantum critical properties of the Bose-Fermi Kondo Model in a large-N limit

Cited by in corpus (3)

• Quantum Criticality in Ferromagnetic Single-Electron Transistors
• Non-Fermi liquid behavior and quantum criticality in cubic heavy fermion systems with non-Kramers multipolar local moments
• Quantum impurity model for two-stage multipolar ordering and Fermi surface reconstruction