Electron-phonon interaction and relaxation time in graphite

J. Jiang, R. Saito, A. Grüneis, G. Dresselhaus, M. S. Dresselhaus

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62 Citations (Scopus)

Abstract

The electron-phonon (e-ph) interaction and the relaxation time of photo-excited electrons are calculated in graphite within the tight-binding scheme. The e-ph matrix element thus obtained, shows anisotropy in k-space. The calculated relaxation time is of the same order of magnitude as the experimental one. Moreover, below an energy close to the Fermi energy, the absorption rate exceeds the emission rate, which indicates that graphite can emit far infra-red electro-magnetic waves by absorbing heat. We also compare this result with Planck's formula for black-body radiation.

Original languageEnglish
Pages (from-to)383-389
Number of pages7
JournalChemical Physics Letters
Volume392
Issue number4-6
DOIs
Publication statusPublished - 2004 Jul 11

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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    Jiang, J., Saito, R., Grüneis, A., Dresselhaus, G., & Dresselhaus, M. S. (2004). Electron-phonon interaction and relaxation time in graphite. Chemical Physics Letters, 392(4-6), 383-389. https://doi.org/10.1016/j.cplett.2004.05.097