The topology and robustness of two Dirac cones in S-graphene: A tight binding approach
Sign Up to like & getrecommendations! Published in 2020 at "Scientific Reports"
DOI: 10.1038/s41598-020-59262-2
Abstract: Present work reports an elegant method to address the emergence of two Dirac cones in a non-hexagonal graphene allotrope S-graphene (SG). We have availed nearest neighbour tight binding (NNTB) model to validate the existence of two… read more here.
Keywords: tight binding; topology robustness; two dirac; dirac cones ... See more keywords
Tunable Dirac cones in two-dimensional covalent organic materials: C2N6S3 and its analogs
Sign Up to like & getrecommendations! Published in 2017 at "RSC Advances"
DOI: 10.1039/c7ra10950d
Abstract: Two-dimensional covalent organic frameworks (2D-COFs) are drawing increasing interest due to the unique configurations and exotic properties. Here, using density-functional theory calculations, we prove the stability of C2N6S3 monolayer by an imagery-frequency-free phonon spectrum, and… read more here.
Keywords: dimensional covalent; tunable dirac; two dimensional; dirac cones ... See more keywords
Realizing graphene-like Dirac cones in triangular boron sheets by chemical functionalization
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Materials Chemistry C"
DOI: 10.1039/c9tc06464h
Abstract: The most important feature in graphene is its unique Dirac cone, which is closely associated with many novel properties. However, this type of Dirac cone is rare and difficult to realize in non-group-IV two-dimensional (2D)… read more here.
Keywords: boron; like dirac; dirac cones; graphene like ... See more keywords
Seeking the Dirac cones in the MoS2/WSe2 van der Waals heterostructure
Sign Up to like & getrecommendations! Published in 2017 at "Applied Physics Letters"
DOI: 10.1063/1.4998305
Abstract: Ab initio calculations show that the bandgap of MoS2-WSe2 heterostructures can be significantly tuned by thickness engineering, perpendicular electric fields, and forming spin-valley coupling Dirac cones at the K and K ′ valleys. The intrinsic… read more here.
Keywords: mos2 wse2; seeking dirac; dirac cones; band ... See more keywords
Anisotropic and gate-tunable valley filtering based on 8-Pmmn borophene.
Sign Up to like & getrecommendations! Published in 2020 at "Nanotechnology"
DOI: 10.1088/1361-6528/abbbd7
Abstract: We propose a valley filter based on 8-Pmmn borophene which hosts two tilted Dirac cones. It is found that the application of a magnetic-electric barrier provided by a single ferromagnetic gate is sufficient to create… read more here.
Keywords: based pmmn; pmmn borophene; gate; dirac cones ... See more keywords
A simple rule for finding Dirac cones in bilayered perovskites
Sign Up to like & getrecommendations! Published in 2019 at "Chinese Physics B"
DOI: 10.1088/1674-1056/28/7/077106
Abstract: We propose a simple rule for finding Dirac cone electronic states in solids, that is neglecting those lattice atoms inert to the particular electronic bands, and pursuing the two dimensional (2D) graphene-like quasi-atom lattices with… read more here.
Keywords: simple rule; dirac cones; finding dirac; rule finding ... See more keywords
Twisting the Dirac cones of the SU(4) spin-orbital liquid on the honeycomb lattice
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review B"
DOI: 10.1103/physrevb.107.l180401
Abstract: By combining the density matrix renormalization group (DMRG) method with Gutzwiller projected wave functions, we study the SU(4) symmetric spin-orbital model on the honeycomb lattice. We find that the ground states can be well described… read more here.
Keywords: twisting dirac; orbital liquid; dirac cones; honeycomb lattice ... See more keywords
Nonlinear Dirac Cones
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.96.121406
Abstract: Physics arising from two-dimensional~(2D) Dirac cones has been a topic of great theoretical and experimental interest to studies of gapless topological phases and to simulations of relativistic systems. Such $2$D Dirac cones are often characterized… read more here.
Keywords: dirac cones; phase; nonlinear dirac; berry phase ... See more keywords
Dirac cones in two-dimensional borane
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.96.195442
Abstract: We introduce two-dimensional borane, a single-layered material of BH stoichiometry, with promising electronic properties. We show that, according to Density Functional Theory calculations, two-dimensional borane is semimetallic, with two symmetry-related Dirac cones meeting right at… read more here.
Keywords: dirac cones; cones two; dimensional borane; two dimensional ... See more keywords
Influences of spin-orbit coupling on Fermi surfaces and Dirac cones in ferroelectriclike polar metals
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.99.195154
Abstract: Based on first-principles calculations and k .p effective models, we report physical properties of ferroelectric-like hexagonal polar metals with P63mc symmetry, which are distinct from those of conventional metals with spatial inversion symmetry. Spin textures… read more here.
Keywords: dirac cones; coupling fermi; polar metals; influences spin ... See more keywords
Twelve inequivalent Dirac cones in two-dimensional ZrB 2
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review Materials"
DOI: 10.1103/physrevmaterials.2.011002
Abstract: Theoretical evidence of the existence of 12 inequivalent Dirac cones at the vicinity of the Fermi energy in monolayered ZrB$_2$ is presented. Two-dimensional ZrB$_2$ is a mechanically stable d- and p-orbital compound exhibiting a unique… read more here.
Keywords: twelve inequivalent; dimensional zrb; two dimensional; dirac cones ... See more keywords