Behavior of a Magnetic Impurity in Graphene in the Presence of a Vacancy

Abstract

With quantum Monte Carlo methods, we investigate the consequences of placing a magnetic adatom adjacent to a vacancy in a graphene sheet. We find that instead of the adatom properties depending on the energy of the adatom orbital, as in a single impurity problem, they develop a dependence on the energy of the split localized state associated with the single vacancy problem. Shifting the chemical potential through this experimentally more accessible energy scale reveals novel behavior in the spectral density, magnetic susceptibility, and the correlations of the adatom spin and charge with those of the conduction electrons. In general, the behavior of the adatom in the presence of a vacancy differs significantly from its behavior in the absence of a vacancy.

5 pages and 5 figures, accepted by Physical Review B

References in corpus (8)

• The electronic properties of graphene
• Spatially Resolving Spin-split Edge States of Chiral Graphene Nanoribbons
• Disorder Induced Localized States in Graphene
• Resonant scattering by realistic impurities in graphene
• Transition metal ad-atoms on graphene: Influence of local Coulomb interactions on chemical bonding and magnetic moments
• Localized Spins on Graphene
• Orbital selective and tunable Kondo effect of magnetic adatoms on graphene: Correlated electronic structure calculations
• Magnetic Impurities in Graphene

Cited by in corpus (3)

• Inelastic Electron Tunneling Spectroscopy for Topological Insulators
• Magnetic Impurity Affected by Spin-Orbit Coupling: Behavior near a Topological Phase Transition
• Magnetic impurity in the vicinity of a vacancy in bilayer graphene