Semi-Dirac Semimetal in Silicene Oxide

Abstract

Semi-Dirac semimetal is a material exhibiting linear band dispersion in one direction and quadratic band dispersion in the orthogonal direction and, therefore, hosts massless and massive fermions at the same point in the momentum space. While a number of interesting physical properties have been predicted in semi-Dirac semimetals, it has been rare to realize such materials in condensed matters. Based on the fact that some honeycomb materials are easily oxidized or chemically absorb other atoms, here, we theoretically propose an approach of modifying their band structures by covalent addition of group-VI elements and strain engineering. We predict a silicene oxide with chemical formula of Si2O to be a candidate of semi-Dirac semimetal. Our approach is backed by the analysis and understanding of the effect of p-orbital frustration on the band structure of the graphene-like materials.

References in corpus (24)

• The electronic properties of graphene
• Epitaxial Growth of Two-Dimensional Stanene
• Dirac materials
• Creating, moving and merging Dirac points with a Fermi gas in a tunable honeycomb lattice
• Observation of tunable bandgap and anisotropic Dirac semimetal state in black phosphorus
• Structural and Electronic Properties of Oxidized Graphene
• The Rare Two-Dimensional Materials with Dirac Cones
• Structural and electronic properties of germanene on MoS${}_2$
• Merging of Dirac points in a two-dimensional crystal
• Half-metallic semiDirac point generated by quantum confinement in TiO${}_2$/VO${}_2$ nanostructures
• A new magnetic field dependence of Landau levels on a graphene like structure
• Zero modes of tight binding electrons on the honeycomb lattice
• Tight-binding modeling and low-energy behavior of the semi-Dirac point
• A universal Hamiltonian for the motion and the merging of Dirac cones in a two-dimensional crystal
• Tuning the Band Gap in Silicene by Oxidation
• Bloch-Zener oscillations across a merging transition of Dirac points
• Topological Protected Dirac Cones in Compressed Bulk Black Phosphorus
• Semi-Dirac dispersion relation in photonic crystals
• Stable single-layer honeycomb like structure of silica
• Emergent non-Fermi liquid at the quantum critical point of a topological phase transition in two dimensions
• A semi-Dirac point in the Hofstadter spectrum
• Carbon Kagome lattice and orbital frustration-induced metal-insulator transition for optoelectronics
• Diffusion of Dirac fermions across a topological merging transition in two dimensions
• The electronic structure and intervalley coupling of artificial and genuine graphene superlattice

Cited by in corpus (17)

• Two-dimensional honeycomb borophene oxide: Strong anisotropy and nodal loop transformation
• A Class of topological nodal rings and its realization in carbon networks
• Semi-Dirac and Weyl Fermions in Transition Metal Oxides
• Quantum thermoelectrics based on 2-D Semi-Dirac materials
• Topological features of Haldane model on a dice lattice: role of flat band on transport properties
• 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
• Topological chiral interface states beyond insulators
• Power law decay of local density of states oscillations near a line defect in a system with semi-Dirac points
• Anisotropic and tunable optical conductivity of a two-dimensional semi-Dirac system in the presence of elliptically polarized radiation
• Off-resonant light-induced topological phase transition and thermoelectric transport in semi-Dirac materials
• Band engineered bilayer Haldane model: Evidence of multiple topological phase transitions
• Deep-lying semi-Dirac fermions in hexagonal close-packed cadmium
• Optically Controlled Topological Phases in the Deformed $\alpha -T_3$ Lattice
• Tunable plasmon modes and topological transitions in single- and bilayer semi-Dirac materials
• Semi-Dirac spin liquids and frustrated quantum magnetism on the trellis lattice
• Landau levels of a Dirac electron in graphene from non-uniform magnetic fields