Electron-Phonon Coupling in Suspended Graphene: Supercollisions by Ripples
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2014
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Language
en
Pages
5
3009-3013
3009-3013
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NANO LETTERS, Volume 14, issue 6
Abstract
Using electrical transport experiments and shot noise thermometry, we find strong evidence that “supercollision” scattering processes by flexural modes are the dominant electron–phonon energy transfer mechanism in high-quality, suspended graphene around room temperature. The power law dependence of the electron–phonon coupling changes from cubic to quintic with temperature. The change of the temperature exponent by two is reflected in the quadratic dependence on chemical potential, which is an inherent feature of two-phonon quantum processes.Description
| openaire: EC/FP7/246026/EU//RODIN
Keywords
electron-phonon scattering, flexural phonon, shot noise thermometry, Suspended graphene
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Citation
Laitinen, A, Oksanen, M, Fay, A, Cox, D, Tomi, M, Virtanen, P & Hakonen, P J 2014, ' Electron-Phonon Coupling in Suspended Graphene: Supercollisions by Ripples ', Nano Letters, vol. 14, no. 6, pp. 3009-3013 . https://doi.org/10.1021/nl404258a