Heptagraphene: Tunable Dirac Cones in a Graphitic Structure
نویسندگان
چکیده
منابع مشابه
Heptagraphene: Tunable Dirac Cones in a Graphitic Structure
We predict the existence and dynamical stability of heptagraphene, a new graphitic structure formed of rings of 10 carbon atoms bridged by carbene groups yielding seven-membered rings. Despite the rectangular unit cell, the band structure is topologically equivalent to that of strongly distorted graphene. Density-functional-theory calculations demonstrate that heptagraphene has Dirac cones on s...
متن کاملStrain engineering of Dirac cones in graphyne
Articles you may be interested in Engineering of optical polarization based on electronic band structures of A-plane ZnO layers under biaxial strains J.
متن کاملManipulation of Dirac Cones in Mechanical Graphene
Recently, quantum Hall state analogs in classical mechanics attract much attention from topological points of view. Topology is not only for mathematicians but also quite useful in a quantum world. Further it even governs the Newton's law of motion. One of the advantages of classical systems over solid state materials is its clear controllability. Here we investigate mechanical graphene, which ...
متن کاملArtificial graphene as a tunable Dirac material
Marco Polini, ∗ Francisco Guinea, Maciej Lewenstein, 4 Hari C. Manoharan, 6 and Vittorio Pellegrini NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, I-56126 Pisa, Italy Instituto de Ciencia de Materiales de Madrid (CSIC), Sor Juana Inés de la Cruz 3, E-28049 Madrid, Spain ICFO Institut de Ciències Fotòniques, Mediterranean Technology Park, Av. Carl Friedrich Gauss 3, E-08860 Castell...
متن کاملAccidental degeneracy of double Dirac cones in a phononic crystal
Artificial honeycomb lattices with Dirac cone dispersion provide a macroscopic platform to study the massless Dirac quasiparticles and their novel geometric phases. In this paper, a quadruple-degenerate state is achieved at the center of the Brillouin zone in a two-dimensional honeycomb lattice phononic crystal, which is a result of accidental degeneracy of two double-degenerate states. In the ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Scientific Reports
سال: 2016
ISSN: 2045-2322
DOI: 10.1038/srep33220