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

Stefan Kirchner·Lijun Zhu·Qimiao Si
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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.

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Stefan Kirchner, Lijun Zhu, Qimiao Si. 2004-07-13. Destruction of the Kondo effect in a multi-channel Bose-Fermi Kondo model. https://doi.org/10.1016/j.physb.2004.12.064

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