http://www.cnr.it/ontology/cnr/individuo/prodotto/ID328376
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
- 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
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
- Note
- 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)
- Prodotto di
- Autore CNR
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