We investigated the electronic and vibrational properties of single wall carbon nanotubes by reflection electron energy loss and X-ray absorption spectroscopies. We report on single particle excitations measured at the C-is edge and on collective excitations of the valence band region. The comparison between the two techniques allows us to locate empty electronic states of the carbonaceous sample. Loss spectra taken in the infrared region reveal two loss features at 90 and 170 mev assigned to the excitation of optical phonon modes.

We investigated the electronic and vibrational properties of single wall carbon nanotubes by reflection electron energy loss and X-ray absorption spectroscopies. We report on single particle excitations measured at the C-is edge and on collective excitations of the valence band region. The comparison between the two techniques allows us to locate empty electronic states of the carbonaceous sample. Loss spectra taken in the infrared region reveal two loss features at 90 and 170 mev assigned to the excitation of optical phonon modes. (C) 2002 Elsevier Science Ltd. All rights reserved.

Electronic and vibrational excitations in carbon nanotubes

CHIARELLO, Gennaro;AGOSTINO, Raffaele Giuseppe;FORMOSO, Vincenzo;CUPOLILLO, Anna;PACILE', Daniela;
2003

Abstract

We investigated the electronic and vibrational properties of single wall carbon nanotubes by reflection electron energy loss and X-ray absorption spectroscopies. We report on single particle excitations measured at the C-is edge and on collective excitations of the valence band region. The comparison between the two techniques allows us to locate empty electronic states of the carbonaceous sample. Loss spectra taken in the infrared region reveal two loss features at 90 and 170 mev assigned to the excitation of optical phonon modes. (C) 2002 Elsevier Science Ltd. All rights reserved.
We investigated the electronic and vibrational properties of single wall carbon nanotubes by reflection electron energy loss and X-ray absorption spectroscopies. We report on single particle excitations measured at the C-is edge and on collective excitations of the valence band region. The comparison between the two techniques allows us to locate empty electronic states of the carbonaceous sample. Loss spectra taken in the infrared region reveal two loss features at 90 and 170 mev assigned to the excitation of optical phonon modes.
carbon nanotubes ; graphite ; electronic properties
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.11770/138414
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