Quantum dephasing in carbon nanotubes due to electron-phonon coupling

Stephan Roche, Jie Jiang, François Triozon, Riichiro Saito

Research output: Contribution to journalArticlepeer-review

62 Citations (Scopus)

Abstract

We report on the effect of electron-phonon coupling on quantum transport in carbon nanotubes. The vibrational atomic displacements as well as the electron-phonon coupling strength are introduced through a time-dependent perturbation of the π-electron Hamiltonian. The effect of dephasing on the Kubo conductance is studied for metallic and semiconducting nanotubes, and from a phenomenological law, coherence length (time) scales are found to fluctuate within the range 10 to 150 nm (0.01 to 4 ps) depending on the energy of charge carriers and phonon amplitude.

Original languageEnglish
Article number076803
JournalPhysical Review Letters
Volume95
Issue number7
DOIs
Publication statusPublished - 2005 Aug 12

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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