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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Quantized orbital angular momentum transfer and magnetic dichroism in the interaction of electron vortices with matter
Physical Review Letters, Volume 108, No. 7, Article 074802, Year 2012
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Description
Following the very recent experimental realization of electron vortices, we consider their interaction with matter, in particular, the transfer of orbital angular momentum in the context of electron energy-loss spectroscopy, and the recently observed dichroism in thin film magnetized iron samples. We show here that orbital angular momentum exchange does indeed occur between electron vortices and the internal electronic-type motion, as well as center-of-mass motion of atoms in the electric dipole approximation. This contrasts with the case of optical vortices where such transfer only occurs in transitions involving multipoles higher than the dipole. The physical basis of the observed dichroism is explained. © 2012 American Physical Society.
Authors & Co-Authors
Babiker, Mohamed M.
United Kingdom, York
University of York
Yuan, Jun
United Kingdom, York
University of York
Statistics
Citations: 96
Authors: 2
Affiliations: 1
Identifiers
Doi:
10.1103/PhysRevLett.108.074802
ISSN:
10797114