Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/5397
Title: Phonon scattering in graphene over substrate steps
Authors: Sevinçli, Haldun
Brandbyge, Mads
Keywords: Graphene
Phonons
Thermal conduction
Bending
Adsorption
Issue Date: Oct-2014
Publisher: American Institute of Physics
Source: Sevinçli, H., and Brandbyge, M. (2014). Phonon scattering in graphene over substrate steps. Applied Physics Letters, 105(15), doi:10.1063/1.4898066
Abstract: We calculate the effect on phonon transport of substrate-induced bends in graphene. We consider bending induced by an abrupt kink in the substrate, and provide results for different step-heights and substrate interaction strengths. We find that individual substrate steps reduce thermal conductance in the range between 5% and 47%. We also consider the transmission across linear kinks formed by adsorption of atomic hydrogen at the bends and find that individual kinks suppress thermal conduction substantially, especially at high temperatures. Our analysis show that substrate irregularities can be detrimental for thermal conduction even for small step heights.
URI: https:doi.org/10.1063/1.4898066
http://hdl.handle.net/11147/5397
ISSN: 0003-6951
0003-6951
1077-3118
Appears in Collections:Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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