Article (Scientific journals)
Moiré-induced replica of graphene phonons on Ir(111)
Endlich, Michael; Pereira Coutada Miranda, Henrique; Molina-Sanchez, Alejandro et al.
2014In Annalen der Physik, 526 (9-10), p. 372-380
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Keywords :
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 center :
ULHPC - University of Luxembourg: High Performance Computing
Disciplines :
Physics
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
External co-authors :
yes
Language :
English
Title :
Moiré-induced replica of graphene phonons on Ir(111)
Publication date :
October 2014
Journal title :
Annalen der Physik
ISSN :
1521-3889
Publisher :
Wiley, Weinheim, Germany
Volume :
526
Issue :
9-10
Pages :
372-380
Peer reviewed :
Peer Reviewed verified by ORBi
FnR Project :
FNR6010221 - Optical And Transport Properties Of Mos2 In The Presence Of Defects, 2013 (01/10/2013-30/09/2017) - Henrique Miranda
Funders :
FNR - Fonds National de la Recherche [LU]
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