Reference : Moiré-induced replica of graphene phonons on Ir(111)

	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/10993/19543

Title :	Moiré-induced replica of graphene phonons on Ir(111)
Language :	English
Author, co-author :	Endlich, Michael [Technische Universität Ilmenau > Institut für Physik]
	Pereira Coutada Miranda, Henrique [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
	Molina-Sanchez, Alejandro [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
	Wirtz, Ludger [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
	Kröger, Jörg [Technische Universität Ilmenau > Institut für Physik]
Publication date :	Oct-2014
Journal title :	Annalen der Physik
Publisher :	Wiley
Volume :	526
Issue/season :	9-10
Pages :	372-380
Peer reviewed :	Yes (verified by ORBilu)
Audience :	International
ISSN :	0003-3804
e-ISSN :	1521-3889
City :	Weinheim
Country :	Germany
Keywords :	[en] graphene ; Ir(111) ; phonon-dispersion ; Moire-superstructure
Abstract :	[en] The phonon dispersion of singly oriented graphene on Ir(111) has been determined by angle-resolved inelastic electron scattering. Replica of graphene phonon bands are induced by the moire superstructure. Calculations for a linear chain of C atoms attached to an infinitely heavy substrate reveal that imposing a superstructure by periodically varying the C-C interaction and the C-substrate coupling induces replicated phonons at wave vectors reflecting the supercell periodicity. Deviations between the phonon dispersion of graphene on Ir(111) and of pristine graphene are analyzed and rationalized in terms of the weak graphene-Ir(111) interaction.
Research centres :	University of Luxembourg: High Performance Computing - ULHPC
Funders :	FNR
Permalink :	http://hdl.handle.net/10993/19543
DOI :	10.1002/andp.201400091
FnR project :	FnR ; FNR6010221 > Henrique Miranda > > Optical and Transport Properties of MoS2 in the presence of Defects > 01/10/2013 > 30/09/2016 > 2013; FNR7490149 > Ludger Wirtz > NANOTMD > 20 Electric transport and superconductivity in Transition Metal Dichalcogenides nanolayers > 01/02/2014 > 31/01/2018 > 2014

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