Phonon Dispersion and Electron--Phonon Interaction in Peanut-Shaped Fullerene Polymers

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概要

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• We reveal that the periodic radius modulation peculiar to one-dimensional (1D) peanut-shaped fullerene (C60) polymers exerts a strong influence on their low-frequency phonon states and their interactions with mobile electrons. The continuum approximation is employed to show the zone-folding of phonon dispersion curves, which leads to fast relaxation of a radial breathing mode in the 1D C60 polymers. We also formulate the electron--phonon interaction along the deformation potential theory, demonstrating that only a few set of electron and phonon modes yields a significant magnitude of the interaction relevant to the low-temperature physics of the system. The latter finding gives an important implication for the possible Peierls instability of the C60 polymers suggested in the earlier experiment.

• 2011-06-15

著者

• Shima Hiroyuki

  Division of Applied Physics, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan

• Ono Shota

  Division of Applied Physics, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan

関連論文

• Phonon Dispersion and Electron--Phonon Interaction in Peanut-Shaped Fullerene Polymers
• Point-Defect Haloing in Curved Nematic Films

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