The topology and robustness of two Dirac cones in S-graphene: A tight binding approach.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
12 Feb 2020
12 Feb 2020
Historique:
received:
11
11
2019
accepted:
27
01
2020
entrez:
14
2
2020
pubmed:
14
2
2020
medline:
14
2
2020
Statut:
epublish
Résumé
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 Dirac cones reported from density functional theory (DFT) computations. Besides, the real space renormalization group (RSRG) scheme clearly reveals the key reason behind the emergence of two Dirac cones associated with the given topology. Furthermore, the robustness of these Dirac cones has been explored in terms of hopping parameters. As an important note, the Fermi velocity of the SG system (v
Identifiants
pubmed: 32051466
doi: 10.1038/s41598-020-59262-2
pii: 10.1038/s41598-020-59262-2
pmc: PMC7015927
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
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