Bandgap engineering in massive-massless graphene superlattices

Bandgap engineering in graphene has become a fervent subject of research due to its relevance in technological applications. In this work, we proposed massive-massless graphene superlattices (MMGSLs) to tune the angle-dependent transmission properties. We have considered breaking symmetry substrates...

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Bibliographic Details
Published inPhysica. B, Condensed matter Vol. 640; p. 414052
Main Authors García-Cervantes, H., López-Becerra, A., Rodríguez-González, R., Rodríguez-Vargas, I.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.09.2022
Subjects
Angle-dependent transmission
Bandgap engineering
Massive-massless graphene superlattices
Bandgap engineering
Massive-massless graphene superlattices
Angle-dependent transmission
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Summary:Bandgap engineering in graphene has become a fervent subject of research due to its relevance in technological applications. In this work, we proposed massive-massless graphene superlattices (MMGSLs) to tune the angle-dependent transmission properties. We have considered breaking symmetry substrates to generate massive and massless regions. We report an angular dependence of the transmission gaps and minibands as a function of the angle of incidence of the Dirac electrons in MMGSLs. Our results show that the transmission gaps and minibands have a trigonometric angular dependence based on the secant in the entire transmission energy range. In addition, the transmission gaps and minibands are well-defined at normal incidence, in contrast to gated graphene superlattices. These findings indicate that MMGSLs could be a possibility for bandgap engineering in graphene.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2022.414052