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@ARTICLE{Faley:873062,
      author       = {Faley, M. I. and Reith, P. and Satrya, C. D. and Stolyarov,
                      V. S. and Folkers, B. and Golubov, A. A. and Hilgenkamp, H.
                      and Dunin-Borkowski, R. E.},
      title        = {{M}o{R}e/{YBCO} {J}osephson junctions and π -loops},
      journal      = {Superconductor science and technology},
      volume       = {33},
      number       = {4},
      issn         = {0953-2048},
      address      = {Bristol},
      publisher    = {IOP Publ.},
      reportid     = {FZJ-2020-00511},
      pages        = {044005 -},
      year         = {2020},
      abstract     = {We have developed Josephson junctions between the d-wave
                      superconductor YBa2Cu3O7−x (YBCO) and the s-wave
                      Mo0.6Re0.4 (MoRe) alloy superconductor (ds-JJs). Such ds
                      Josephson junctions are of interest for superconducting
                      electronics making use of incorporated π-phase shifts. The
                      I(V)-characteristics of the ds-JJs demonstrate a twice
                      larger critical current along the [100] axis of the YBCO
                      film compared to similarly-oriented ds-JJs made with a Nb
                      top electrode. The characteristic voltage I c R n of the
                      YBCO–Au–MoRe ds-JJs is 750 μV at 4.2 K. The ds-JJs that
                      are oriented along the [100] or [010] axes of the YBCO film
                      exhibit a 200 times higher critical current than similar
                      ds-JJs oriented along the [110] axis of the same YBCO film.
                      A critical current density J c = 20 kA cm−2 at 4.2 K was
                      achieved. Different layouts of π-loops based on the novel
                      ds-JJs were arranged in various mutual coupling
                      configurations. Spontaneous persistent currents in the
                      π-loops were investigated using scanning SQUID microscopy.
                      Magnetic states of the π-loops were manipulated by currents
                      in integrated bias lines. Higher flux states up to ±2.5Φ0
                      were induced and stabilized in the π-loops. Crossover
                      temperatures between thermally activated and quantum
                      tunneling switching processes in the ds-JJs were estimated.
                      The demonstrated ability to stabilise and manipulate states
                      of π-loops paves the way towards new computing concepts
                      such as quantum annealing computing.},
      cin          = {PGI-5 / ER-C-1},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-5-20110106 / I:(DE-Juel1)ER-C-1-20170209},
      pnm          = {144 - Controlling Collective States (POF3-144)},
      pid          = {G:(DE-HGF)POF3-144},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000537735500002},
      doi          = {10.1088/1361-6668/ab7053},
      url          = {https://juser.fz-juelich.de/record/873062},
}