Infrared absorption by graphene–hBN heterostructures

Abergel, David S. L. and Wallbank, John and Chen, Xi and Mucha-Kruczynski, Marcin and Falko, Vladimir (2013) Infrared absorption by graphene–hBN heterostructures. New Journal of Physics, 15 (12): 123009. ISSN 1367-2630

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Abstract

We propose a theory of optical absorption in monolayer graphene–hexagonal boron nitride (hBN) heterostructures. In highly oriented heterostructures, the hBN underlay produces a long-range moire superlattice potential for the graphene electrons which modifies the selection rules for absorption of incoming photons in the infrared to visible frequency range. The details of the absorption spectrum modification depend on the relative strength of the various symmetry-allowed couplings between the graphene electrons and the hBN, and the resulting nature of the reconstructed band structure.

Item Type:

Journal Article

Journal or Publication Title:

New Journal of Physics

Additional Information:

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

Uncontrolled Keywords:

/dk/atira/pure/subjectarea/asjc/3100/3100

Subjects:

?? general physics and astronomyphysics and astronomy(all) ??

Departments:

Faculty of Science and Technology > Physics

ID Code:

68520

Deposited By:

ep_importer_pure

Deposited On:

07 Feb 2014 13:13

Refereed?:

Yes

Published?:

Published

Last Modified:

18 Nov 2024 01:10

URI:

https://eprints.lancs.ac.uk/id/eprint/68520