Holographic generation of highly twisted electron beams (Articolo in rivista)

Type
Label
  • Holographic generation of highly twisted electron beams (Articolo in rivista) (literal)
Anno
  • 2015-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevLett.114.034801 (literal)
Alternative label
  • Grillo V.; Gazzadi G.C.; Mafakheri E.; Frabboni S.; Karimi E.; Boyd R.W. (2015)
    Holographic generation of highly twisted electron beams
    in Physical review letters (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Grillo V.; Gazzadi G.C.; Mafakheri E.; Frabboni S.; Karimi E.; Boyd R.W. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.scopus.com/inward/record.url?eid=2-s2.0-84921696097&partnerID=q2rCbXpz (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 114 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 3 (literal)
Note
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR-Istituto Nanoscienze, Centro S3, Via G. Campi 213/a, Modena, I-41125, Italy; CNR-IMEM, Parco Area delle Scienze 37/A, Parma, I-43124, Italy; Dipartimento FIM, Universitá di Modena e Reggio Emilia, Via G. Campi 213/a, Modena, I-41125, Italy; Department of Physics, University of Ottawa, 25 Templeton, Ottawa, ON, K1N 6N5, Canada; Institute of Optics, University of Rochester, Rochester, NY, 14627, United States (literal)
Titolo
  • Holographic generation of highly twisted electron beams (literal)
Abstract
  • Free electrons can possess an intrinsic orbital angular momentum, similar to those in an electron cloud, upon free-space propagation. The wave front corresponding to the electron's wave function forms a helical structure with a number of twists given by the angular speed. Beams with a high number of twists are of particular interest because they carry a high magnetic moment about the propagation axis. Among several different techniques, electron holography seems to be a promising approach to shape a conventional electron beam into a helical form with large values of angular momentum. Here, we propose and manufacture a nanofabricated phase hologram for generating a beam of this kind with an orbital angular momentum up to 200â Based on a novel technique the value of orbital angular momentum of the generated beam is measured and then compared with simulations. Our work, apart from the technological achievements, may lead to a way of generating electron beams with a high quanta of magnetic moment along the propagation direction and, thus, may be used in the study of the magnetic properties of materials and for manipulating nanoparticles. (literal)
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