Estimation of the Electron–Phonon Coupling Constants for Graphene and Metallic and Nonmetallic Substrates |
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Authors: | Davydov S Yu |
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Institution: | 1.Ioffe Institute, Russian Academy of Sciences, St. Petersburg, 194021, Russia ;2.ITMO University, St. Petersburg, 197101, Russia ; |
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Abstract: | Two modes of graphene–substrate interaction have been considered: a weak van der Waals bond and a strong covalent bond. The Lennard–Jones potential and Harrison bond-orbital method are used in the former and latter cases, respectively. Analytical expressions for the electron–phonon interaction constants, which contain only two parameters (binding energy E
B
for graphene and a substrate and distance d between them) have been obtained. The constants have been calculated for metallic, semiconductor, and dielectric substrates. |
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