Impurity resonance effects in graphene impurity location, concentration and sublattice occupation
arXiv:2005.12643 · doi:10.1103/PhysRevB.102.155414
Abstract
Unique electronic band structure of graphene with its semi-metallic features near the charge neutrality point is sensitive to impurity effects. Using the Lifshitz and Anderson impurity models, we study in detail the disorder induced spectral phenomena in the electronic band structure of graphene, namely, the formation of resonances, quasi-gaps, bound states, impurity sub-bands, and their overall impact on the electronic band restructuring and the associated Mott-like metal-insulator transitions. We perform systematic analytical and numerical study for realistic impurities, both substitutional and adsorbed, focusing on those effects that stem from the impurity adatoms locations (top, bridge, and hollow positions), concentration, host sublattice occupation, perturbation strengths, etc. Possible experimental and practical implications are discussed as well.
20 pages (including appendices), 17 figures
References in corpus (20)
- Adsorption of H2O, NH3, CO, NO2, and NO on graphene: A first-principles study
- A self-consistent theory for graphene transport
- Hydrogen on graphene: Electronic structure, total energy, structural distortions, and magnetism from first-principles calculations
- Atomic-scale control of graphene magnetism using hydrogen atoms
- Disorder Induced Localized States in Graphene
- Electronic transport in graphene: A semi-classical approach including midgap states
- Modeling disorder in graphene
- Resonant scattering by realistic impurities in graphene
- Adsorbate-limited conductivity of graphene
- Unified description of the dc conductivity of monolayer and bilayer graphene at finite densities based on resonant scatterers
- Colossal negative magnetoresistance in dilute fluorinated graphene
- Impurity effects in a two--dimensional system with Dirac spectrum
- Resonant low-energy electron scattering on short-range impurities in graphene
- Spin-orbit coupling in fluorinated graphene
- Absence of a transport signature of spin-orbit coupling in graphene with indium adatoms
- Copper adatoms on graphene: theory of orbital and spin-orbital effects
- Effect of in-situ deposition of Mg adatoms on spin relaxation in graphene
- Atomistic -matrix theory of disordered 2D materials: Bound states, spectral properties, quasiparticle scattering, and transport
- Effect of hydrogen adsorption on the quasiparticle spectra of graphene
- Ferromagnetic induced Kondo effect in graphene with a magnetic impurity