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Journal Article

Temperature dependence of electron-to-lattice energy transfer in single-wall carbon nanotube bundles

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Moos,  Gunnar
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Hertel,  Tobias
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Citation

Moos, G., Fasel, R., & Hertel, T. (2003). Temperature dependence of electron-to-lattice energy transfer in single-wall carbon nanotube bundles. Journal of Nanoscience and Nanotechnology, 3(1), 145-149. doi:10.1166/jnn.2003.163.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-113B-D
Abstract
The electron-phonon coupling strength in single-wall carbon nanotube (SWNT) bundles has been studied directly in the time domain by femtosecond time-resolved photoelectron spectroscopy. We have measured the dependence of H(T-theta,T-I), the rate of energy transfer between the electronic system and the lattice as a function of electron and lattice temperatures T-theta and T-I. The experiments are consistent with a T-5 dependence of H on the electron and lattice temperatures, respectively. The results can be related to the e-ph mass enhancement parameter lambda. The experimentally obtained value for lambda/Theta(D)(2), where Theta(D) is the Debye temperature, suggests that e-ph scattering times at the Fermi level of SWNT bundles can be exceptionally long, exceeding 1.5 ps at room temperature.