Graphene on graphene antidot lattices: Electronic and transport properties

Søren Schou Gregersen, Jesper Goor Pedersen, Stephen Power, Antti-Pekka Jauho

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Abstract

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 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 a 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.
Original languageEnglish
JournalPhysical Review B
Volume91
Issue number11
Pages (from-to)115424
Number of pages12
ISSN0163-1829
DOIs
Publication statusPublished - 2015

Bibliographical note

©2015 American Physical Society

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