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@ARTICLE{Pozzi:830517,
      author       = {Pozzi, Giulio and Lu, Peng-Han and Tavabi, Amir H. and
                      Duchamp, Martial and Dunin-Borkowski, Rafal},
      title        = {{G}eneration of electron vortex beams using line charges
                      via the electrostatic {A}haronov-{B}ohm effect},
      journal      = {Ultramicroscopy},
      volume       = {181},
      issn         = {0304-3991},
      address      = {Amsterdam},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2017-04051},
      pages        = {191–196},
      year         = {2017},
      abstract     = {It has recently been shown that an electron vortex beam can
                      be generated by the magnetic field surrounding the tip of a
                      dipole-like magnet. This approach can be described using the
                      magnetic Aharonov-Bohm effect and is associated with the
                      fact that the end of a long magnetic rod can be treated
                      approximately as a magnetic monopole. However, it is
                      difficult to vary the magnetisation of the rod in such a
                      setup and the electron beam vorticity is fixed for a given
                      tip shape. Here, we show how a similar behaviour, which has
                      the advantage of easy tuneability, can be achieved by making
                      use of the electrostatic Aharonov-Bohm effect associated
                      with an electrostatic dipole line. We highlight the
                      analogies between the magnetic and electrostatic cases and
                      use simulations of in-focus, Fresnel and Fraunhofer images
                      to show that a device based on two parallel, oppositely
                      charged lines that each have a constant charge density can
                      be used to generate a tuneable electron vortex beam. We
                      assess the effect of using a dipole line that has a finite
                      length and show that if the charge densities on the two
                      lines are different then an additional biprism-like effect
                      is superimposed on the electron-optical phase.},
      cin          = {ER-C-1 / PGI-5},
      ddc          = {570},
      cid          = {I:(DE-Juel1)ER-C-1-20170209 / I:(DE-Juel1)PGI-5-20110106},
      pnm          = {143 - Controlling Configuration-Based Phenomena (POF3-143)},
      pid          = {G:(DE-HGF)POF3-143},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:28609665},
      UT           = {WOS:000411170800023},
      doi          = {10.1016/j.ultramic.2017.06.001},
      url          = {https://juser.fz-juelich.de/record/830517},
}