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@ARTICLE{Weides:58463,
      author       = {Weides, M. and Kohlstedt, H. and Waser, R. and Kemmler, M.
                      and Pfeiffer, J. and Koelle, D. and Kleiner, R. and
                      Goldobin, E.},
      title        = {{F}erromagnetic o-pi {J}osephson junctions},
      journal      = {Applied physics / A},
      volume       = {89},
      issn         = {0947-8396},
      address      = {Berlin},
      publisher    = {Springer},
      reportid     = {PreJuSER-58463},
      pages        = {613},
      year         = {2007},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {We present a study on low-T-c
                      superconductor-insulator-ferromagnet-superconductor (SIFS)
                      Josephson junctions. SIFS junctions have gained considerable
                      interest in recent years because they show a number of
                      interesting properties for future classical and quantum
                      computing devices. We optimized the fabrication process of
                      these junctions to achieve a homogeneous current transport,
                      ending up with high-quality samples. Depending on the
                      thickness of the ferromagnetic layer and on temperature, the
                      SIFS junctions are in the ground state with a phase drop of
                      either 0 or pi. By using a ferromagnetic layer with variable
                      step-like thickness along the junction, we obtained a
                      so-called 0-pi Josephson junction, in which 0 and pi ground
                      states compete with each other. At a certain temperature the
                      0 and pi parts of the junction are perfectly symmetric, i.e.
                      the absolute critical current densities are equal. In this
                      case the degenerate ground state corresponds to a vortex of
                      supercurrent circulating clock- or counterclockwise and
                      creating a magnetic flux which carries a fraction of the
                      magnetic flux quantum phi(0).},
      keywords     = {J (WoSType)},
      cin          = {IFF-6 / CNI / JARA-FIT},
      ddc          = {530},
      cid          = {I:(DE-Juel1)VDB786 / I:(DE-Juel1)VDB381 /
                      $I:(DE-82)080009_20140620$},
      pnm          = {Grundlagen für zukünftige Informationstechnologien},
      pid          = {G:(DE-Juel1)FUEK412},
      shelfmark    = {Materials Science, Multidisciplinary / Physics, Applied},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000249663500007},
      doi          = {10.2007/s00339-007-4206-3},
      url          = {https://juser.fz-juelich.de/record/58463},
}