Lattice symmetries, spectral topology and opto-electronic properties of graphene-like materials
arXiv:1701.02715 · doi:10.1209/0295-5075/119/27001
Abstract
The topology of the band structure, which is determined by the lattice symmetries, has a strong influence on the transport properties. Here we consider an anisotropic honeycomb lattice and study the effect of a continuously deformed band structure on the optical conductivity and on diffusion due to quantum fluctuations. In contrast to the behavior at an isotropic node we find super- and subdiffusion for the anisotropic node. The spectral saddle points create van Hove singularities in the optical conductivity, which could be used to characterize the spectral properties experimentally.
9 pages, 6 figures. Slightly extended version, e.g. Eq.(12) included
References in corpus (8)
- The electronic properties of graphene
- Charged Impurity Scattering in Graphene
- Analogs of quantum Hall effect edge states in photonic crystals
- Defect scattering in graphene
- Merging of Dirac points in a two-dimensional crystal
- A semi-Dirac point in the Hofstadter spectrum
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Cited by in corpus (12)
- Optical properties of a semi-Dirac material
- Anisotropic effects in two-dimensional materials
- Optical conductivity of semi-Dirac and pseudospin-1 models: Zitterbewegung approach
- Signatures of merging Dirac points in optics and transport
- Tunable transmittance in anisotropic 2D materials
- Novel topological phases of a semi-Dirac Chern insulator in presence of extended range hopping
- Topological phase transition induced by band structure modulation in a Chern insulator
- Vanishing of the quantum spin Hall phase in a semi-Dirac Kane Mele model
- Deformation of graphene sheet: Interaction of fermions with phonons
- Electron-hole superfluidity controlled by a periodic potential
- Control of valley optical conductivity and topological phases in buckled hexagonal lattice by orientation of in-plane magnetic field
- Zero mode protection at particle-hole symmetry: a geometric interpretation