Electron-Phonon Coupling in Suspended Graphene: Supercollisions by Ripples

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

Organisaatiot

Kuvaus

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.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut3009-3013
Sivumäärä5
JulkaisuNano Letters
Vuosikerta14
Numero6
TilaJulkaistu - 2014
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

    Tutkimusalat

  • electron-phonon scattering, flexural phonon, shot noise thermometry, Suspended graphene

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