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Updated: Jan 10, 2026

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
Loss of coherence in a magnetic electron lens due to spin rotation
1Akita Prefectural University, 84-4 Aza Ebinokuchi Tsuchiya, Yurihonjo, 015-0055, Akita, Japan; NRC Quantum and Nanotechnologies Research Centre, 11421 Saskatchewan Drive, Edmonton, T6G 2M9, Alberta, Canada.
Abstract:
Rotation of the electron spin in an inhomogeneous magnetic field in the magnetic electron lens causes a partial loss of coherence. Such incoherence entails non-ideal focusing properties of an electron lens. Although this effect should be small in the current electron-optical systems, we show that the effect could be a non-negligible factor in an aberration-corrected system with an electron probe with a large half angle in the future. A semiclassical framework for evaluating the effect is described. We emphasize that the incoherence effect manifests itself for the spin unpolarized electron beam as well.
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