Spin Liquid Behavior in Electronic Griffiths Phases

Abstract

We examine the interplay of the Kondo effect and the RKKY interactions in electronic Griffiths phases using extended dynamical mean-field theory methods. We find that sub-Ohmic dissipation is generated for sufficiently strong disorder, leading to suppression of Kondo screening on a finite fraction of spins, and giving rise to universal spin-liquid behavior.

4 pages, minor changes included, typos corrected

References in corpus (13)

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Cited by in corpus (10)

• Non-Fermi-Liquid Behavior in Metallic Quasicrystals with Local Magnetic Moments
• Kondo physics and dissipation: A numerical renormalization-group approach to Bose-Fermi Kondo models
• Localization of overdamped bosonic modes and transport in strange metals
• Tunable non-Fermi liquid phase from coupling to two-level systems
• Typical-Medium Theory of Mott-Anderson Localization
• Electronic Griffiths Phase in the Te - Doped Semiconductor FeSb${}_2$
• Anomalous spin dynamics in charge ordered, 'two-electron' doped manganite Ca_0.9Ce_0.1MnO_3 : consequence of a spin-liquid phase?
• Novel duality in disorder driven local quantum criticality
• Competition between Kondo and RKKY correlations in the presence of strong randomness
• Construction and purpose of effective field theories for frustrated magnetic order