Bandgap engineering in massive-massless graphene superlattices

被引：0

作者：

García-Cervantes, H. ^{[1
]}

López-Becerra, A. ^{[2
]}

Rodríguez-González, R. ^{[2
]}

Rodríguez-Vargas, I. ^{[2
]}

机构：

[1] Electromecánica Industrial, Universidad Tecnológica de León, Blvd. Universidad Tecnológica 225, San Carlos la Roncha, 37670 León, Guanajuato, Mexico

[2] Unidad Académica de Ciencia y Tecnología de la Luz y la Materia, Universidad Autónoma de Zacatecas, Carretera Zacatecas-Guadalajara Km. 6, Ejido La Escondida, 98160 Zacatecas, Zac., Mexico

来源：

Physica B: Condensed Matter | 2022年 / 640卷

关键词：

Energy gap - Transmissions;

D O I：

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中图分类号：

学科分类号：

摘要：

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. © 2022 Elsevier B.V.

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