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@ARTICLE{Weides:54855,
      author       = {Weides, M. and Kemmler, M. and Kohlstedt, H. and Waser, R.
                      and Koelle, D. and Kleiner, R. and Goldobin, E.},
      title        = {{O}-pi {J}osephson tunnel junctions with ferromagnetic
                      barrier},
      journal      = {Physical review letters},
      volume       = {97},
      issn         = {0031-9007},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {PreJuSER-54855},
      pages        = {247001},
      year         = {2006},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {We fabricated high quality Nb/Al2O3/Ni0.6Cu0.4/Nb
                      superconductor-insulator-ferromagnet-superconductor
                      Josephson tunnel junctions. Using a ferromagnetic layer with
                      a steplike thickness, we obtain a 0-pi junction, with equal
                      lengths and critical currents of 0 and pi parts. The ground
                      state of our 330 mu m (1.3 lambda(J)) long junction
                      corresponds to a spontaneous vortex of supercurrent pinned
                      at the 0-pi step and carrying similar to $6.7\%$ of the
                      magnetic flux quantum Phi(0). The dependence of the critical
                      current on the applied magnetic field shows a clear minimum
                      in the vicinity of zero field.},
      keywords     = {J (WoSType)},
      cin          = {IFF-IEM / CNI / JARA-FIT},
      ddc          = {550},
      cid          = {I:(DE-Juel1)VDB321 / I:(DE-Juel1)VDB381 /
                      $I:(DE-82)080009_20140620$},
      pnm          = {Grundlagen für zukünftige Informationstechnologien},
      pid          = {G:(DE-Juel1)FUEK412},
      shelfmark    = {Physics, Multidisciplinary},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000242888700054},
      doi          = {10.1103/PhysRevLett.97.247001},
      url          = {https://juser.fz-juelich.de/record/54855},
}