Premium
Loss‐spectroscopy on sparse arrays of aligned single‐wall carbon nanotubes
Author(s) -
Kramberger Christian,
Rümmeli Mark,
Knupfer Martin,
Fink Jörg,
Büchner Bernd,
Einarsson Erik,
Maruyama Shigeo,
Pichler Thomas
Publication year - 2008
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200879602
Subject(s) - electron energy loss spectroscopy , carbon nanotube , spectroscopy , materials science , electron , molecular physics , range (aeronautics) , gapless playback , dispersion (optics) , atomic physics , carbon fibers , condensed matter physics , chemistry , physics , nanotechnology , optics , transmission electron microscopy , quantum mechanics , composite number , composite material
We performed angle resolved electron energy‐loss spectroscopy on vertically aligned single wall carbon nanotubes. We observe two distinct loss‐peaks in the energy range from 4:6 eV to 5:1 eV. This doublet of loss‐peaks is attributed to the on‐axis and crossed plasma oscillations of the π electrons in sp 2 carbon. The unique identification and assignment of these two oriented excitations is derived from their dispersion relations. The available momenta are aligned on the nanotube axis and reflect the confinement of a particle on a wire. The observed angle resolved loss‐peaks are a gapless extension of polarized optical spectroscopy into finite momenta. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom