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Competition for Graphene: Graphynes with Direction-Dependent Dirac Cones
Malko, D.; Neiss, C.; Viñes Solana, Francesc; Görling, A.
Universitat de Barcelona
The existence of Dirac cones in the band structure of two-dimensional materials accompanied by unprecedented electronic properties is considered to be a unique feature of graphene related to its hexagonal symmetry. Here, we present other two-dimensional carbon materials, graphynes, that also possess Dirac cones according to first-principles electronic structure calculations. One of these materials, 6,6,12-graphyne, does not have hexagonal symmetry and features two self-doped nonequivalent distorted Dirac cones suggesting electronic properties even more amazing than that of graphene.
Propietats elèctriques
Electric properties
(c) American Physical Society, 2012
American Physical Society

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