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Abstract: The electron-phonon interaction in monolayer graphene is investigated using density-functional perturbation theory. The results indicate that the electron-phonon interaction strength is of comparable magnitude for all four in-plane phonon branches and must be considered simultaneously. Moreover, the calculated scattering rates suggest an acoustic-phonon contribution that is much weaker than previously thought, revealing an important role of optical phonons even at low energies. Accordingly it is predicted, in good agreement with a recent measurement, that the intrinsic mobility of graphene may be more than an order of magnitude larger than the already high values reported in suspended samples.
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Borysenko, Kostyantyn M.; Mullen, Jeffrey T.; Barry, E. A.; Paul, S.; Semenov, Yuriy G.; Zavada, J. M. et al.First-principles analysis of electron-phonon interactions in graphene,
article,
March 16, 2010;
[College Park, Maryland].
(https://digital.library.unt.edu/ark:/67531/metadc234930/:
accessed September 26, 2023),
University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu;
crediting UNT College of Arts and Sciences.
