TY - JOUR
T1 - Electron-phonon interaction and relaxation time in graphite
AU - Jiang, J.
AU - Saito, R.
AU - Grüneis, A.
AU - Dresselhaus, G.
AU - Dresselhaus, M. S.
N1 - Funding Information:
R.S. acknowledges a Grant-in-Aid (No. 13440091) from the Ministry of Education, Japan. MIT authors acknowledge support under NSF Grants DR 01-16042, and INT 00-00408.
PY - 2004/7/11
Y1 - 2004/7/11
N2 - 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.
AB - 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.
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U2 - 10.1016/j.cplett.2004.05.097
DO - 10.1016/j.cplett.2004.05.097
M3 - Article
AN - SCOPUS:3042670191
VL - 392
SP - 383
EP - 389
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 4-6
ER -