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@ARTICLE{Sickinger:22767,
      author       = {Sickinger, H. and Lipman, A. and Weides, M. and Mints, R.G.
                      and Kohlstedt, H. and Koelle, D. and Kleiner, R. and
                      Goldobin, E.},
      title        = {{E}xperimental evidence of a phi-{J}osephson {J}unction},
      journal      = {Physical review letters},
      volume       = {109},
      issn         = {0031-9007},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {PreJuSER-22767},
      pages        = {107002},
      year         = {2012},
      note         = {We acknowledge financial support by the German Israeli
                      Foundation (Grant No. G-967-126.14/2007) and DFG (via
                      SFB/TRR-21, project A5 as well via project Go-1106/3). H. S.
                      gratefully acknowledges support by the Evangelisches
                      Studienwerk e. V. Villigst.},
      abstract     = {We demonstrate experimentally the existence of Josephson
                      junctions having a doubly degenerate ground state with an
                      average Josephson phase psi = +/-phi. The value of phi can
                      be chosen by design in the interval 0 < phi < pi. The
                      junctions used in our experiments are fabricated as 0-pi
                      Josephson junctions of moderate normalized length with
                      asymmetric 0 and pi regions. We show that (a) these phi
                      Josephson junctions have two critical currents,
                      corresponding to the escape of the phase c from -phi and
                      +phi states, (b) the phase psi can be set to a particular
                      state by tuning an external magnetic field, or (c) by using
                      a proper bias current sweep sequence. The experimental
                      observations are in agreement with previous theoretical
                      predictions.},
      keywords     = {J (WoSType)},
      cin          = {PGI-7 / JARA-FIT},
      ddc          = {550},
      cid          = {I:(DE-Juel1)PGI-7-20110106 / $I:(DE-82)080009_20140620$},
      pnm          = {Grundlagen für zukünftige Informationstechnologien},
      pid          = {G:(DE-Juel1)FUEK412},
      shelfmark    = {Physics, Multidisciplinary},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000308458900017},
      doi          = {10.1103/PhysRevLett.109.107002},
      url          = {https://juser.fz-juelich.de/record/22767},
}