Electron–phonon coupling effect on quantum transport in carbon nanotubes using time-dependent wave-packet approach
✍ Scribed by Hiroyuki Ishii; Nobuhiko Kobayashi; Kenji Hirose
- Publisher
- Elsevier Science
- Year
- 2007
- Tongue
- English
- Weight
- 158 KB
- Volume
- 40
- Category
- Article
- ISSN
- 1386-9477
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✦ Synopsis
We investigate the electron-phonon coupling effects on the electronic transport properties of the metallic ð5; 5Þ-carbon nanotube using the time-dependent wave-packet approach based on the Kubo-Greenwood formula within a tight-binding approximation. We consider the zone-center longitudinal optical phonon among various phonon modes, and calculate the conductance for the 10 mm carbon nanotubes at room temperature. We show that the electron-phonon coupling largely decreases the conductance around the Fermi energy, which is explained by the time-dependent behaviors of propagating length and the electronic band structure.