Kondo effect due to a hydrogen impurity in graphene: A multichannel Kondo problem with diverging hybridization

2019/07/31 by Zheng Shi, Emilian M. Nica, Ian Affleck · 8 citations
Materials Science · Physics and Astronomy · #Anderson impurity model #Condensed matter physics #Electron #Graphene #Graphene research and applications #Impurity #Kondo effect #Kondo insulator #Magnetic impurity #Magnetic moment #Magnetic properties of thin films #Physics #Quantum and electron transport phenomena #Quantum mechanics #Scattering #Spin (aerodynamics) #Spins #cond-mat.mes-hall #cond-mat.str-el

paper · pdf · doi:10.1103/physrevb.100.125158

published in Physical review. B./Physical review. B 100(12) (American Physical Society) · 22+ pages, 16 figures; additional information on ferromagnetic p-h asymmetric strong-coupling fixed point

arxiv created 2019/09/10 · openalex publication_date 2019/09/25 · arxiv updated 2019/10/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

Magnetic impurities in conducting media are often Kondo screened by conduction electrons. However, for hydrogen impurities in graphene, which also induce magnetic moments, the picture is complicated by the energy-dependent, unusually enhanced local density of states. Here, the authors study the Kondo effect in this system, which is intimately related to the Kondo problem of three impurity spins on an equilateral triangle in a metallic host. The induced magnetic moment is found to be underscreened for local potential scattering that is not too strong, leaving a residual spin of \textonehalf.

Citations

• Local quasiparticle states near a Zn impurity with induced magnetic moment in a high-Tcsuperconductor
• Defect-induced magnetism in graphene
• Magnetism in Disordered Graphene and Irradiated Graphite
• Magnetic Correlations at Graphene Edges: Basis for Novel Spintronics Devices
• Numerical renormalization group method for quantum impurity systems
• RKKY in half-filled bipartite lattices: Graphene as an example
• Vacancy-induced magnetism in graphene and graphene ribbons
• Hydrogenated graphene nanoribbons for spintronics
• Block Lanczos density-matrix renormalization group method for general Anderson impurity models: Application to magnetic impurity problems in graphene
• Kondo Screening in a Magnetically Frustrated Nanostructure: Exact Results on a Stable Non-Fermi-Liquid Phase
• The renormalization group: Critical phenomena and the Kondo problem
• Electric Field Effect in Atomically Thin Carbon Films
• Hydrogen on graphene: Electronic structure, total energy, structural distortions and magnetism from first-principles calculations
• Detection of the Kondo effect in the resistivity of graphene: Artifacts and strategies
• The electronic properties of graphene
• Spin-half paramagnetism in graphene induced by point defects
• Electronic spin transport and spin precession in single graphene layers at room temperature
• Resistance Minimum in Dilute Magnetic Alloys
• Resonant Scattering by Realistic Impurities in Graphene
• Impurity-induced magnetic moments on the graphene-lattice Hubbard model: An inhomogeneous cluster dynamical mean-field theory study
• Nonmagnetic-Defect-Induced Magnetism in Graphene