Probing divacancy defects in a zigzag graphene nanoribbon through RKKY exchange interaction
arXiv:2006.01661 · doi:10.1088/1361-6463/abcb33
Abstract
We investigate the effect of vacancy defects on the electronic and magnetic properties of zigzag graphene nanoribbons (zGNRs) by making use of the Green's function formalism in combination with the tight-binding Hamiltonian. The evolution of the indirect exchange coupling, known as Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction, including single, double, and multiple 5-8-5 divacancy defects is explained. Our numerical calculations show that the changes in the electronic structure and the exchange coupling of zGNRs depend significantly on the location of the divacancy defects with respect to the ribbon edges and on the number of the divacancy defects. In the case both the impurities are located on the edge, the magnitude of the exchange coupling is several orders of magnitude strengthen that result when they are placed on the interior of the nanoribbon. Furthermore, a periodic divacancy causes a dramatic change in the magnetic ground state of the ribbon. In the limit of high vacancy potential, the strength of the RKKY interaction is approximately independent of the Fermi energy.
arXiv comment11 pages, 8 figures
References in corpus (69)
- Electric Field Effect in Atomically Thin Carbon Films
- The electronic properties of graphene
- Energy Gaps in Graphene Nanoribbons
- The structure of suspended graphene sheets
- Half-Metallic Graphene Nanoribbons
- Intrinsic ripples in graphene
- On-surface synthesis of graphene nanoribbons with zigzag edge topology
- Magnetism in Graphene Induced by Single-Atom Defects
- Room Temperature All Semiconducting sub-10nm Graphene Nanoribbon Field-Effect Transistors
- Electronic Properties of Disordered Two-Dimensional Carbon
- A self-consistent theory for graphene transport
- Measurement of Scattering Rate and Minimum Conductivity in Graphene
- Gauge fields in graphene
- The missing atom as a source of carbon magnetism
- Spin-half paramagnetism in graphene induced by point defects
- From Point Defects in Graphene to Two-Dimensional Amorphous Carbon
- Defect scattering in graphene
- Electronic structure and magnetic properties of graphitic ribbons
- Disorder Induced Localized States in Graphene
- Crystallographic Etching of Few-Layer Graphene
- Edge-functionalized and substitutional doped graphene nanoribbons: electronic and spin properties
- Enhanced Half-Metallicity in Edge-Oxidized Zigzag Graphene Nanoribbons
- Electron scattering on microscopic corrugations in graphene
- Vacancy induced magnetism in graphene and graphene ribbons
- Tuning the conductance of single-walled carbon nanotubes by ion irradiation in the Anderson localization regime
- Tunable Kondo Effect in Graphene with Defects
- Tunable Graphene Single Electron Transistor
- Resonant scattering by realistic impurities in graphene
- Cyclotron Resonance study of the electron and hole velocity in graphene monolayers
- On resonant scatterers as a factor limiting carrier mobility in graphene
- Modeling electronic structure and transport properties of graphene with resonant scattering centers
- Thermal Conductivity of Suspended Graphene with Defects
- Impurity States in Graphene
- Adsorbate-limited conductivity of graphene
- Electronic and structural characterization of divacancies in irradiated graphene
- Transport properties of 2D graphene containing structural defects
- Unified description of the dc conductivity of monolayer and bilayer graphene at finite densities based on resonant scatterers
- Tuning the electronic structures of armchair graphene nanoribbons through chemical edge modification: A theoretical study
- Stabilization mechanism of edge states in graphene
- Direct experimental evidence of pi magnetism of a single atomic vacancy in graphene
- Cutting and controlled modification of graphene with ion beams
- Magnetic moments in the presence of topological defects in graphene
- Impurity effects in a two--dimensional system with Dirac spectrum
- Accurate determination of electron-hole asymmetry and next-nearest neighbor hopping in graphene
- Charge transport in graphene with resonant scatterers
- Edge states and flat bands in graphene nanoribbons with arbitrary geometries
- Strain and Electric Field Modulation of the Electronic Structure of Bilayer Graphene
- Numerical study of the lattice vacancy effects on the single-channel electron transport of graphite ribbons
- Topological phase and edge states dependence of the RKKY interaction in zigzag silicene nanoribbon
- Electrical conductivity in graphene with point defects
- Kondo effect with diverging hybridization: possible realization in graphene with vacancies
- Modeling vacancies and hydrogen impurities in graphene: A molecular point of view
- Band dispersion of graphene with structural defects
- Strongly anisotropic RKKY interaction in monolayer black phosphorus
- Bundling up carbon nanotubes through Wigner defects
- Valley filtering effect of phonons in graphene with a grain boundary
- Ab initio calculations of edge-functionalized armchair graphene nanoribbons: Structural, electronic, and vibrational effects
- Effects of temperature and strain rate on mechanical behaviors of Stone-Wales defective monolayer black phosphorene
- Graphene with vacancies: supernumerary zero modes
- Impurity State and Variable Range Hopping Conduction in Graphene
- Exchange interaction of magnetic impurities in biased bilayer phosphorene nanoribbon
- Quantum transport in graphene Hall bars: Effects of vacancy disorder
- Divacancy-induced Ferromagnetism in Graphene Nanoribbons
- Structural, electronic and magnetic properties of point defects in polyaniline (C3N) and graphene monolayers: A comparative study
- Strain-induced modulation of exchange interaction in monolayer zigzag nanoribbons of BS
- Tilt-induced anomalous thermal transport in normal/superconducting borophane junctions
- Tuning the electronic structure and magnetic coupling in armchair BS nanoribbons using strain and staggered sublattice potential
- Enhancement of thermoelectric figure of merit in zigzag graphene nanoribbons with periodic edge vacancies
- RKKY plateau in zero- and one-dimensional triangular Kagome lattice models