Monovacancy-induced magnetism in graphene bilayers

Abstract

Vacancy-induced magnetism in graphene bilayers is investigated using spin-polarized density functional theory calculations. One of two graphene layers has a monovacancy. Two atomic configurations for bilayers are considered with respect to the position of the monovacancy. We find that spin magnetic moments localized at the vacancy site decreases by ~10 % for our two configurations, compared with the graphene monolayer with a monovacancy. The reduction of the spin magnetic moment in the graphene bilayers is attributed to the interlayer charge transfer from the adjacent layer to the layer with the monovacancy, compensating for spin magnetic moments originating from quasilocalized defect state.

14 pages, 1 table and 4 figures

References in corpus (9)

• The SIESTA method for ab initio order-N materials simulation
• Efficient index handling of multidimensional periodic boundary conditions
• Magnetism in Graphene Induced by Single-Atom Defects
• Induced Magnetic Ordering by Proton Irradiation in Graphite
• Disorder Induced Localized States in Graphene
• Ferromagnetism in Oriented Graphite Samples
• $\pi$-Electron Ferromagnetism in Metal Free Carbon Probed by Soft X-Ray Dichroism
• Ferromagnetism of a graphite nodule from the Canyon Diablo meteorite
• Electronic Structure of Bilayer Graphene: A Real-space Green's Function Study

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• Point Defects in Twisted Bilayer Graphene: A Density Functional Theory Study
• External gates and transport in biased bilayer graphene
• Pinning and switching of magnetic moments in bilayer graphene
• Theoretical Study of Magnetic Moments Induced by Defects at the SiC (110) Surface
• Collective resonances near zero energy induced by a point defect in bilayer graphene
• Influence of dislocations in multilayer graphene stacks: A phase field crystal study