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@ARTICLE{Dauber:877734,
      author       = {Dauber, Jan and Oellers, Martin and Venn, Florian and
                      Epping, Alexander and Watanabe, Kenji and Taniguchi, Takashi
                      and Hassler, Fabian and Stampfer, Christoph},
      title        = {{A}haronov-{B}ohm oscillations and magnetic focusing in
                      ballistic graphene rings},
      journal      = {Physical review / B},
      volume       = {96},
      number       = {20},
      issn         = {2469-9950},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2020-02432},
      pages        = {205407},
      year         = {2017},
      abstract     = {We present low-temperature magnetotransport measurements on
                      graphene rings encapsulated in hexagonal boron nitride. We
                      investigate phase-coherent transport and show Aharonov-Bohm
                      (AB) oscillations in quasiballistic graphene rings with hard
                      confinement. In particular, we report on the observation of
                      h/e,h/2e, and h/3e conductance oscillations. Moreover we
                      show signatures of magnetic focusing effects at small
                      magnetic fields confirming ballistic transport. We perform
                      tight-binding calculations which allow us to reproduce all
                      significant features of our experimental findings and enable
                      a deeper understanding of the underlying physics. Finally,
                      we report on the observation of the AB conductance
                      oscillations in the quantum Hall regime at reasonable high
                      magnetic fields, where we find regions with enhanced AB
                      oscillation visibility with values up to $0.7\%.$ These
                      oscillations are well explained by taking disorder into
                      account allowing for a coexistence of hard- and soft-wall
                      confinement.},
      cin          = {PGI-9 / JARA-FIT},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-9-20110106 / $I:(DE-82)080009_20140620$},
      pnm          = {521 - Controlling Electron Charge-Based Phenomena
                      (POF3-521)},
      pid          = {G:(DE-HGF)POF3-521},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:29116592},
      UT           = {WOS:000414333700005},
      doi          = {10.1103/PhysRevB.96.205407},
      url          = {https://juser.fz-juelich.de/record/877734},
}