Comment on ‘Electromagnetic lensing using the Aharonov–Bohm effect’

Abstract

Recently, Schreiber et al (2024 New J. Phys. 26 043012) have presented the theory of an electron lens acting through the Aharonov–Bohm effect in the field-free opening of a static toroidal magnetic field. In this Comment, three key results of this theory are shown to be incorrect due to six basic calculation errors. The errors are corrected, and three correspondingly modified key results are derived. These results are discussed with respect to the hypothetical lens effect and the underlying Aharonov–Bohm effect.

Keywords

• electron optics
• magnetic lens
• magnetic vector potential
• Aharonov–Bohm effect