Vacancy Induced Splitting of Dirac Nodal Point in Graphene
arXiv:1109.4272 · doi:10.1103/PhysRevB.85.073407
Abstract
We investigate the vacancy effects on quasiparticle band structure of graphene near the Dirac point. It is found that each Dirac nodal point splits into two new nodal points due to the coherent scattering among vacancies. The splitting energy between the two nodal points is proportional to the square root of vacancy concentration. In addition, an extra dispersionless impurity band of zero energy due to particle-hole symmetry is found. Our theory offers an excellent explanation to the recent experiments.
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Cited by in corpus (5)
- Broken Symmetries, Zero-Energy Modes, and Quantum Transport in Disordered Graphene: From Supermetallic to Insulating Regimes
- Electronic structure of vacancy resonant states in graphene: a critical review of the single vacancy case
- Disorder-Induced Phase Transitions in Three-Dimensional Chiral Second-Order Topological Insulator
- Spin-orbit related power-law dependence of the diffusive conductivity on the carrier density in disordered Rashba two-dimensional electron systems
- Dirac node engineering and flat bands in doped Dirac materials