Electron vortex beams in a magnetic field and spin filter
نویسندگان
چکیده
منابع مشابه
Relativistic electron vortex beams: angular momentum and spin-orbit interaction.
Motivated by the recent discovery of electron vortex beams carrying orbital angular momentum (AM), we construct exact Bessel-beam solutions of the Dirac equation. They describe relativistic and nonparaxial corrections to the scalar electron beams. We describe the spin and orbital AM of the electron with Berry-phase corrections and predict the intrinsic spin-orbit coupling in free space. This ca...
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Elastic scattering of electron vortex beams on magnetic materials leads to a weak magnetic contrast due to Zeeman interaction of orbital angular momentum of the beam with magnetic fields in the sample. The magnetic signal manifests itself as a redistribution of intensity in diffraction patterns due to a change of sign of the orbital angular momentum of the electron vortex beam. While in the ato...
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Konstantin Y. Bliokh, Peter Schattschneider, Jo Verbeeck, and Franco Nori Advanced Science Institute, RIKEN, Wako-shi, Saitama 351-0198, Japan A. Usikov Institute of Radiophysics and Electronics, NASU, Kharkov 61085, Ukraine Institut für Festkörperphysik, Technische Universität Wien, A-1040 Wien, Austria University Service Centre for Electron Microscopy, Technische Universität Wien, A-1040 Wien...
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We propose an all-optical method of creating electron vortices utilizing the Kapitza-Dirac effect. This technique uses the transfer of orbital angular momentum from photons to free electrons creating electron vortex beams in the process. The laser intensities needed for this experiment can be obtained with available pulsed lasers and the resulting electron beams carrying orbital angular momentu...
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We are used to electrons occupying states with quantized spin and orbital angular momenta in atoms, but existing methods for generating high-energy electron beams are very inefficient at either producing or transferring states with well-defined spin and/or orbital angular momentum. This failure stems from the dominance of the direct Coulomb interaction over the spin–spin and spin–orbit interact...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2015
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.91.033812