Type-II Dirac photonic lattices
arXiv:2005.12477 · doi:10.1002/qute.202000015
Abstract
Different from the Fermi surface of the type-I Dirac semimetal being a point, that of the type-II Dirac semimetal is a pair of crossing lines because the Dirac cone is tilted with open and hyperbolic isofrequency contours. As an optical analogy, type-II Dirac photonic lattices have been also designed. Here, we report type-II Dirac cones in Lieb-like photonic lattices composed of identical waveguide channels, and the anisotropy of the band structure is due to neither the refractive index change nor the environment, but only the spatial symmetry of the lattice; therefore, the proposal is advantage and benefits experimental observation. Conical diffractions and Klein tunneling in the parametric type-II photonic lattice are investigated in detail. Our results provide a simple and experimental feasible platform to study two-dimensional topological photonic and other nonrelativistic phenomena around type-II Dirac cones.
10 pages, 5 figures
References in corpus (38)
- Chiral tunneling and the Klein paradox in graphene
- Photonic Floquet Topological Insulators
- Type-II Weyl Semimetals
- Creating, moving and merging Dirac points with a Fermi gas in a tunable honeycomb lattice
- Observation of a localized flat-band state in a photonic Lieb lattice
- Observation of bound states in Lieb photonic lattices
- Localization and delocalization of light in photonic moire lattices
- Lorentz-violating type-II Dirac fermions in transition metal dichalcogenide PtTe
- Strain-induced pseudomagnetic field and Landau levels in photonic structures
- Corner states of light in photonic waveguides
- Observation of novel edge states in photonic graphene
- Photonic Topological Insulator in Synthetic Dimensions
- Photonic Topological Anderson Insulators
- Coherent driving and freezing of bosonic matter wave in an optical Lieb lattice
- Experimental observation of optical Weyl points
- Topological creation and destruction of edge states in photonic graphene
- Experimental Realization of Type-II Dirac Fermions in PdTe Superconductor
- Structured Weyl Points in Spin-Orbit Coupled Fermionic Superfluids
- Type-II nodal loops: theory and material realization
- Robust Type-II Weyl Semimetal Phase in Transition Metal Diphosphides XP (X = Mo, W)
- Unveiling pseudospin and angular momentum in photonic graphene
- Spin-orbit coupling and optical spin Hall effect in photonic graphene
- Prefect Klein tunneling in anisotropic graphene-like photonic lattices
- Unconventional Flatband Line States in Photonic Lieb Lattices
- Brillouin-zone spectroscopy of nonlinear photonic lattices
- Lieb polariton topological insulators
- Type-II Dirac Photons
- Floquet Weyl semimetals in light-irradiated type-II and hybrid line-node semimetals
- Approaching the Type-II Dirac Point and Concomitant Superconductivity in Pt-doping Stabilized Metastable 1T-phase IrTe2
- Manipulating type-I and type-II Dirac polaritons in cavity-embedded honeycomb metasurfaces
- Type-I and type-II Nodal Lines Coexistence in the Antiferromagnetic monolayer CrAs
- Transport properties in the photonic super-honeycomb lattice - a hybrid fermionic and bosonic system
- Type-II Dirac photons at the metasurfaces
- Line nodes, Dirac points and Lifshitz transition in 2D nonsymmorphic photonic crystals
- Deterministic scheme for two-dimensional type-II Dirac points and experimental realization in acoustics
- Nonlinear wave dynamics in honeycomb lattices
- Asymmetric conical diffraction in dislocated edge-centered square lattices
- Type-II Dirac line node in strained Na3N