We propose to use the recently introduced orbital angular momentum spectrometer in a transmission electron microscope to perform electron magnetic chiral dichroism experiments, dispersing the inelastically scattered electrons from a magnetic material in both energy and angular momentum. The technique offers several advantages over previous formulations of electron magnetic chiral dichroism as it requires much simpler experimental conditions in terms of specimen orientation and thickness. A simulation algorithm, based on the multislice description of the beam propagation, is used to anticipate the advantages of the approach over current electron magnetic chiral dichroism implementations. Numerical calculations confirm an increased magnetic signal to noise ratio with in plane atomic resolution.

Orbital angular momentum resolved electron magnetic chiral dichroism / Rotunno, E.; Zanfrognini, M.; Frabboni, S.; Rusz, J.; Dunin Borkowski, R. E.; Karimi, E.; Grillo, V.. - In: PHYSICAL REVIEW. B. - ISSN 2469-9950. - 100:22(2019), pp. 1-11. [10.1103/PhysRevB.100.224409]

Orbital angular momentum resolved electron magnetic chiral dichroism

Zanfrognini M.;Frabboni S.;Grillo V.
2019

Abstract

We propose to use the recently introduced orbital angular momentum spectrometer in a transmission electron microscope to perform electron magnetic chiral dichroism experiments, dispersing the inelastically scattered electrons from a magnetic material in both energy and angular momentum. The technique offers several advantages over previous formulations of electron magnetic chiral dichroism as it requires much simpler experimental conditions in terms of specimen orientation and thickness. A simulation algorithm, based on the multislice description of the beam propagation, is used to anticipate the advantages of the approach over current electron magnetic chiral dichroism implementations. Numerical calculations confirm an increased magnetic signal to noise ratio with in plane atomic resolution.
2019
100
22
1
11
Orbital angular momentum resolved electron magnetic chiral dichroism / Rotunno, E.; Zanfrognini, M.; Frabboni, S.; Rusz, J.; Dunin Borkowski, R. E.; Karimi, E.; Grillo, V.. - In: PHYSICAL REVIEW. B. - ISSN 2469-9950. - 100:22(2019), pp. 1-11. [10.1103/PhysRevB.100.224409]
Rotunno, E.; Zanfrognini, M.; Frabboni, S.; Rusz, J.; Dunin Borkowski, R. E.; Karimi, E.; Grillo, V.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1188546
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