Talmantaite, A. and Hunt, M.R.C. and Mendis, B.G. (2020) 'Electron Compton scattering and the measurement of electron momentum distributions in solids.', Journal of microscopy., 279 (3). pp. 185-188.
Abstract
Electron Compton scattering is a technique that gives information on the electron momentum density of states and is used to characterize the ground state electronic structure in solids. Extracting the momentum density of states requires us to assume the so‐called ‘impulse approximation’, which is valid for large energy losses. Here, the robustness of the impulse approximation in the low energy transfer regime is tested and confirmed on amorphous carbon films. Compared to traditional Compton measurements, this provides additional benefits of more efficient data collection and a simplified way to probe valence electrons, which govern solid state bonding. However, a potential complication is the increased background from the plasmon signal. To overcome this, a novel plasmon background subtraction routine is proposed for samples that are resistant to beam damage.
Item Type: | Article |
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Full text: | (VoR) Version of Record Available under License - Creative Commons Attribution. Download PDF (Advance online version) (945Kb) |
Full text: | (VoR) Version of Record Available under License - Creative Commons Attribution. Download PDF (1046Kb) |
Status: | Peer-reviewed |
Publisher Web site: | https://doi.org/10.1111/jmi.12854 |
Publisher statement: | © The Authors. Journal of Microscopy published by John Wiley & Sons Ltd on behalf of Royal Microscopical Society. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
Date accepted: | 07 December 2019 |
Date deposited: | 10 January 2020 |
Date of first online publication: | 06 January 2020 |
Date first made open access: | 10 January 2020 |
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