Disorder-mediated Kondo effect in graphene

Abstract

We study the emergence of strongly correlated states and Kondo physics in disordered graphene. Diluted short range disorder gives rise to localized midgap states at the vicinity of the system charge neutrality point. We show that long-range disorder, ubiquitous in graphene, allows for the coupling of these localized states to an effective (disorder averaged) metallic band. The system is described by an Anderson-like model. We use the numerical renormalization group (NRG) method to study the distributions of Kondo temperatures $P(T_K)$. The results show that disorder can lead to long logarithmic tails in $P(T_K)$, consistent with a quantum Griffiths phase.

Published version + Supp. Material

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Cited by in corpus (16)

• Non-Fermi-Liquid Behavior in Metallic Quasicrystals with Local Magnetic Moments
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• Coulomb charging energy of vacancy-induced states in graphene
• Symmetry-protected coherent transport for diluted vacancies and adatoms in graphene
• Modeling of gate controlled Kondo effect at carbon point-defects in graphene
• Transport signatures of Kondo physics and quantum criticality in graphene with magnetic impurities
• Density matrix renormalization group study in energy space for a single-impurity Anderson model and an impurity quantum phase transition
• Reentrant Kondo effect in a quantum impurity coupled to a metal-semiconductor hybrid contact
• Sublattice symmetry breaking and Kondo-effect enhancement in strained graphene
• From Kondo to local singlet state in graphene nanoribbons with magnetic impurities
• Spin relaxation in disordered graphene: Interplay between puddles and defect-induced magnetism
• Simulating realistic screening clouds around quantum impurities: role of spatial anisotropy and disorder
• The Aubry-Andre Anderson model: Magnetic impurities coupled to a fractal spectrum
• Vacancy-induced tunable Kondo effect in twisted bilayer graphene
• Stoner ferromagnetism in low-angle twisted bilayer graphene at three-quarters filling
• Kondo effect in a two-dimensional electron gas in the Persistent Spin Helix regime