Lyon, Keenan, Bergman, Anders, Zeiger, Paul et al. (4 more authors) (2021) Magnon diffuse scattering in scanning transmission electron microscopy. [Preprint]
Abstract
We present a theory and a simulation of thermal diffuse scattering due to the excitation of magnons in scanning transmission electron microscopy. The calculations indicate that magnons can present atomic contrast when detected by electron energy-loss spectroscopy using atomic-size electron beams. The results presented here indicate that the intensity of the magnon diffuse scattering in bcc iron at 300~K is 4 orders of magnitude weaker than the intensity of thermal diffuse scattering arising from atomic vibrations. In an energy range where the phonon and magnon dispersions do not overlap, a monochromated scanning transmission electron microscope equipped with direct electron detectors for spectroscopy is expected to resolve the magnon spectral signatures.
Metadata
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Copyright, Publisher and Additional Information: | 6 pages, 3 figures | ||||||
Keywords: | cond-mat.mtrl-sci | ||||||
Dates: |
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Institution: | The University of York | ||||||
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) | ||||||
Funding Information: |
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Depositing User: | Pure (York) | ||||||
Date Deposited: | 08 Jun 2023 23:15 | ||||||
Last Modified: | 08 Jun 2023 23:17 | ||||||
Status: | Published | ||||||
Refereed: | No | ||||||
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