Plasmon-mediated energy relaxation in graphene

D. K. Ferry, R. Somphonsane, H. Ramamoorthy, J. P. Bird

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Abstract

Energy relaxation of hot carriers in graphene is studied at low temperatures, where the loss rate may differ significantly from that predicted for electron-phonon interactions. We show here that plasmons, important in the relaxation of energetic carriers in bulk semiconductors, can also provide a pathway for energy relaxation in transport experiments in graphene. We obtain a total loss rate to plasmons that results in energy relaxation times whose dependence on temperature and density closely matches that found experimentally.

Original languageEnglish (US)
Article number262103
JournalApplied Physics Letters
Volume107
Issue number26
DOIs
Publication statusPublished - Dec 28 2015

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Ferry, D. K., Somphonsane, R., Ramamoorthy, H., & Bird, J. P. (2015). Plasmon-mediated energy relaxation in graphene. Applied Physics Letters, 107(26), [262103]. https://doi.org/10.1063/1.4938760