Plasmon excitation in single-walled carbon nanotubes probed using charged particles: comparison of calculated and experimental spectra

SILVINA SEGUI; Z. L. MISKOVIC; J. L GERVASONI; N. R. ARISTA

JOURNAL OF PHYSICS CONDENSED MATTER

IOP PUBLISHING LTD

Lugar: Londres; Año: 2013 vol. 25 p. 1750011 - 1750019

0953-8984

We study the excitation of plasmons due to the incidence of a fast charged particle that passes through a single wall carbon nanotube. We use a quantized hydrodynamic model, in which the σ and π electron systems are depicted as two interacting fluids moving on a cylindrical surface. Calculations of the average number of the excited plasmons and the corresponding energy loss probability of swift electrons are compared with several experimental results for electron energy loss spectra recorded in transmission electron microscopes. We are able to identify the π and σ +π plasmon peaks and elucidate the origin of various spectral features observed in different experiments.