Graphene on graphene antidot lattices: Electronic and transport properties

Graphene bilayer systems are known to exhibit a band gap when the layer symmetry is broken, by applying a perpendicular electric field. The resulting band structure resembles that of a conventional semiconductor with a parabolic dispersion. Here, we introduce a novel bilayer graphene heterostructure...

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Bibliographic Details
Published inarXiv.org
Main Authors Søren Schou Gregersen, Jesper Goor Pedersen, Power, Stephen R, Jauho, Antti-Pekka
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 02.07.2015
Subjects
Antidots
Band structure
Band structure of solids
Banded structure
Bilayers
Dispersion
Electric fields
Electronic structure
Graphene
Heterostructures
Lattices
Monolayers
Physics - Mesoscale and Nanoscale Physics
Transport properties
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Summary:Graphene bilayer systems are known to exhibit a band gap when the layer symmetry is broken, by applying a perpendicular electric field. The resulting band structure resembles that of a conventional semiconductor with a parabolic dispersion. Here, we introduce a novel bilayer graphene heterostructure, where single-layer graphene is placed on top of another layer of graphene with a regular lattice of antidots. We dub this class of graphene systems GOAL: graphene on graphene antidot lattice. By varying the structure geometry, band structure engineering can be performed to obtain linearly dispersing bands (with a high concomitant mobility), which nevertheless can be made gapped with the perpendicular field. We analyze the electronic structure and transport properties of various types of GOALs, and draw general conclusions about their properties to aid their design in experiments.
ISSN:2331-8422
DOI:10.48550/arxiv.1410.5196