Combined study of the ground and unoccupied electronic states of graphite by electron energy-loss spectroscopy

Author(s)
Zhenbao Feng, Stefan Löffler, Franz Eder, Dangsheng Su, Jannik C. Meyer, Peter Schattschneider
Abstract

Both the unoccupied and ground electronic states of graphite have been studied by electron energy-loss spectroscopy in a transmission electron microscope. Electron energy-loss near-edge structures of the K-edge of carbon have been investigated in detail for scattering angles from 0 to 2.8 mrad. The π∗ and σ∗ components were separated. The angular and energy dependences of the π∗ and σ∗ structures were in fair agreement with theory. Electron energy loss Compton spectra of graphite were recorded at scattering angles from 45 to 68 mrad. One Compton scattering spectrum was obtained in 1 min compared with several hours or days using photons. The contributions of core electrons were calculated by the exact Hartree-Slater method in the Compton scattering region. The electron Compton profile for graphite

is in good agreement with other conventional Compton profile

measurements, as well as with theory, thus establishing the validity of

the technique.

Organisation(s)
Physics of Nanostructured Materials
External organisation(s)
Technische Universität Wien, Shenyang National Laboratory for Materials Science
Journal
Journal of Applied Physics
Volume
114
No. of pages
8
ISSN
0021-8979
DOI
https://doi.org/10.1063/1.4829021
Publication date
11-2013
Peer reviewed
Yes
Austrian Fields of Science 2012
103020 Surface physics, 103018 Materials physics
Portal url
https://ucris.univie.ac.at/portal/en/publications/combined-study-of-the-ground-and-unoccupied-electronic-states-of-graphite-by-electron-energyloss-spectroscopy(0f2fdc1d-da81-4ad2-88f3-f6000796edb3).html