Anomalous enhancement in the infrared phonon intensity of a one-dimensional uneven peanut-shaped C60 polymer.

Abstract

A one-dimensional (1D) uneven peanut-shaped C(60) polymer formed from electron-beam (EB)-induced polymerization of C(60) molecules showed an anomalous increase in two characteristic infrared (IR) peak intensities, which are respectively due to the radial and tangential motion of the 1D polymer, when compared to the IR peaks of pristine C(60) films. This anomaly was analyzed on the basis of the vibrational van Hove singularity (VHS), using an extended thin-shell elastic model fully considering the effects of periodic radius modulation inherent to the 1D uneven peanut-shaped C(60) polymer. We succeeded in explaining the enhancement in the tangential peak intensity by VHS, whereas the origin to cause that in the radial peak intensity is still unclear.

DOI: 10.1088/0953-8984/24/17/175405

Cite this paper

@article{Onoe2012AnomalousEI, title={Anomalous enhancement in the infrared phonon intensity of a one-dimensional uneven peanut-shaped C60 polymer.}, author={Jun Onoe and A Takashima and Shiano Ono and Hiroyuki Shima and Tomohiro Nishii}, journal={Journal of physics. Condensed matter : an Institute of Physics journal}, year={2012}, volume={24 17}, pages={175405} }