Abstract
Phonon energy-loss spectroscopy using electrons has both high resolution and low resolution components, associated with short- and long-range interactions, respectively. In this paper, we discuss how these two contributions arise from a fundamental quantum mechanical perspective. Starting from a correlated model for the atomic motion we show how short range 'impact' scattering and long range 'dipole' scattering arises. The latter dominates in aloof beam imaging, an imaging geometry in which radiation damage can be avoided.
| Original language | English |
|---|---|
| Pages (from-to) | i24-i29 |
| Number of pages | 6 |
| Journal | Microscopy |
| Volume | 67 |
| Issue number | S1 |
| DOIs | |
| Publication status | Published - 1 Mar 2018 |
Keywords
- Aloof beam geometry
- Electron energy-loss spectroscopy
- Phonon excitation
Cite this
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A quantum mechanical exploration of phonon energy-loss spectroscopy using electrons in the aloof beam geometry. / Allen, L J; Brown, H G; Findlay, S D; Forbes, B D.
In: Microscopy, Vol. 67, No. S1, 01.03.2018, p. i24-i29.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - A quantum mechanical exploration of phonon energy-loss spectroscopy using electrons in the aloof beam geometry
AU - Allen, L J
AU - Brown, H G
AU - Findlay, S D
AU - Forbes, B D
PY - 2018/3/1
Y1 - 2018/3/1
N2 - Phonon energy-loss spectroscopy using electrons has both high resolution and low resolution components, associated with short- and long-range interactions, respectively. In this paper, we discuss how these two contributions arise from a fundamental quantum mechanical perspective. Starting from a correlated model for the atomic motion we show how short range 'impact' scattering and long range 'dipole' scattering arises. The latter dominates in aloof beam imaging, an imaging geometry in which radiation damage can be avoided.
AB - Phonon energy-loss spectroscopy using electrons has both high resolution and low resolution components, associated with short- and long-range interactions, respectively. In this paper, we discuss how these two contributions arise from a fundamental quantum mechanical perspective. Starting from a correlated model for the atomic motion we show how short range 'impact' scattering and long range 'dipole' scattering arises. The latter dominates in aloof beam imaging, an imaging geometry in which radiation damage can be avoided.
KW - Aloof beam geometry
KW - Electron energy-loss spectroscopy
KW - Phonon excitation
UR - http://www.scopus.com/inward/record.url?scp=85044534535&partnerID=8YFLogxK
U2 - 10.1093/jmicro/dfx038
DO - 10.1093/jmicro/dfx038
M3 - Article
VL - 67
SP - i24-i29
JO - Microscopy
JF - Microscopy
SN - 2050-5698
IS - S1
ER -