4 Pages

Correlating low-mass EELS and ELNES of carbon nano-structures

A Seepujak, A Gutierrez-Sosa, A J Harvey, U Bangert, V D Blank*, B A Kulnitskiy*, D V Batov*

Department of Physics, UMIST, PO Box 88, Manchester M60 1QD, UK *Technological Institute for Superhard and Novel Carbon Materials, 7a Centralnaya Street, 142092 Troitsk, Moskow, Russia

ABSTRACT: EEL spectra were taken in various parts of individual carbon nanotubes produced in a HIP apparatus under nitrogen pressure with and without use of an iron catalyst. The fine structure of the carbon K-edge was investigated in conjunction with the π plasmon and π pre-plasmon (2-6 eV) loss region. A feature was detected at 3-4 eV for certain low-loss spectra that we ascribe to an interface plasmon. The results demonstrate that the low loss region provides supportive and complementary information to the ELNES, characteristic of the nanotube bandstructure.