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@ARTICLE{Tavabi:904905,
author = {Tavabi, Amir H. and Rosi, Paolo and Rotunno, Enzo and
Roncaglia, Alberto and Belsito, Luca and Frabboni, Stefano
and Pozzi, Giulio and Gazzadi, Gian Carlo and Lu, Peng-Han
and Nijland, Robert and Ghosh, Moumita and Tiemeijer, Peter
and Karimi, Ebrahim and Dunin-Borkowski, Rafal E. and
Grillo, Vincenzo},
title = {{E}xperimental {D}emonstration of an {E}lectrostatic
{O}rbital {A}ngular {M}omentum {S}orter for {E}lectron
{B}eams},
journal = {Physical review letters},
volume = {126},
number = {9},
issn = {0031-9007},
address = {College Park, Md.},
publisher = {APS},
reportid = {FZJ-2022-00221},
pages = {094802},
year = {2021},
abstract = {The component of orbital angular momentum (OAM) in the
propagation direction is one of the fundamental quantities
of an electron wave function that describes its rotational
symmetry and spatial chirality. Here, we demonstrate
experimentally an electrostatic sorter that can be used to
analyze the OAM states of electron beams in a transmission
electron microscope. The device achieves postselection or
sorting of OAM states after electron-material interactions,
thereby allowing the study of new material properties such
as the magnetic states of atoms. The required
electron-optical configuration is achieved by using
microelectromechanical systems technology and focused ion
beam milling to control the electron phase electrostatically
with a lateral resolution of 50 nm. An OAM resolution of
1.5ℏ is realized in tests on controlled electron vortex
beams, with the perspective of reaching an optimal OAM
resolution of 1ℏ in the near future.},
cin = {ER-C-1},
ddc = {530},
cid = {I:(DE-Juel1)ER-C-1-20170209},
pnm = {5351 - Platform for Correlative, In Situ and Operando
Characterization (POF4-535) / Q-SORT - QUANTUM SORTER
(766970) / ESTEEM3 - Enabling Science and Technology through
European Electron Microscopy (823717)},
pid = {G:(DE-HGF)POF4-5351 / G:(EU-Grant)766970 /
G:(EU-Grant)823717},
typ = {PUB:(DE-HGF)16},
pubmed = {33750150},
UT = {WOS:000627618200013},
doi = {10.1103/PhysRevLett.126.094802},
url = {https://juser.fz-juelich.de/record/904905},
}