Bandgap engineering in aperiodic Thue-Morse graphene superlattices
Source abstract
Abstract
The lack of bandgap in graphene is the main factor that prevents that this outstanding material be implemented in optoelectronics. In this work, we show that by nanostructuring graphene aperiodically it is possible to have an efficient transmission bandgap engineering. In particular, we are considering aperiodic graphene superlattices in which electrostatic barriers are arranged following the basic construction rules of the Thue-Morse sequence. We find that the transmission bandgap can be modulated readily by changing the angle of incidence as well as by appropriately choosing the generation of the Thue-Morse superlattice. Even, this angle-dependent bandgap engineering is more effective than the corresponding one for periodic graphene superlattices.
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Research context
OpenAlex topics: Graphene research and applications · 2D Materials and Applications · Photonic Crystals and Applications
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Affiliations
CIICAp, IICBA, Universidad Autónoma del Estado de Morelos 1 , Av. Universidad 1001, Col. Chamilpa, 62209 Cuernavaca, Morelos, México
Unidad Académica de Física, Universidad Autónoma de Zacatecas 2 , Calzada Solidaridad Esquina Con Paseo La Bufa S/N, 98060 Zacatecas, Zac., México
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