Screening of electron-phonon coupling in ...
Document type :
Compte-rendu et recension critique d'ouvrage
Title :
Screening of electron-phonon coupling in graphene on Ir(111)
Author(s) :
Endlich, M. [Auteur]
Technische Universität Ilmenau [TU ]
Molina-Sánchez, A. [Auteur]
University of Luxembourg [Luxembourg]
Wirtz, L. [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
University of Luxembourg [Luxembourg]
Kröger, J. [Auteur]
Technische Universität Ilmenau [TU ]
Technische Universität Ilmenau [TU ]
Molina-Sánchez, A. [Auteur]
University of Luxembourg [Luxembourg]
Wirtz, L. [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
University of Luxembourg [Luxembourg]
Kröger, J. [Auteur]
Technische Universität Ilmenau [TU ]
Journal title :
Physical Review B: Condensed Matter and Materials Physics (1998-2015)
Pages :
205403, 4 pages
Publisher :
American Physical Society
Publication date :
2013-11-15
ISSN :
1098-0121
HAL domain(s) :
Sciences de l'ingénieur [physics]
English abstract : [en]
The phonon dispersion of graphene on Ir(111) has been determined by means of angle-resolved inelastic electron scattering and density functional calculations. Kohn anomalies of the highest optical-phonon branches are ...
Show more >The phonon dispersion of graphene on Ir(111) has been determined by means of angle-resolved inelastic electron scattering and density functional calculations. Kohn anomalies of the highest optical-phonon branches are observed at the ¯¯¯Γ and ¯K point of the surface Brillouin zone. At ¯K the Kohn anomaly is weaker than observed for pristine graphene and graphite. This observation is rationalized in terms of a decrease of the electron-phonon coupling due to screening of graphene electron correlations by the metal substrate.Show less >
Show more >The phonon dispersion of graphene on Ir(111) has been determined by means of angle-resolved inelastic electron scattering and density functional calculations. Kohn anomalies of the highest optical-phonon branches are observed at the ¯¯¯Γ and ¯K point of the surface Brillouin zone. At ¯K the Kohn anomaly is weaker than observed for pristine graphene and graphite. This observation is rationalized in terms of a decrease of the electron-phonon coupling due to screening of graphene electron correlations by the metal substrate.Show less >
Language :
Anglais
Popular science :
Non
ANR Project :
Source :
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