%0 Journal Article
%A Weides, M.
%A Schindler, C.
%A Kohlstedt, H.
%T Low T_c Josephson junctions with tailored barrier
%J Journal of applied physics
%V 101
%@ 0021-8979
%C Melville, NY
%I American Institute of Physics
%M PreJuSER-56184
%P 063902
%D 2007
%Z Record converted from VDB: 12.11.2012
%X Nb/Al2O3/Ni0.6Cu0.4/Nb based superconductor-insulator-ferromagnet-superconductor Josephson tunnel junctions with a thickness step in the metallic ferromagnetic Ni0.6Cu0.4 interlayer were fabricated. The step was defined by optical lithography and controlled etching. The step height is on the scale of a few angstroms. Experimentally determined junction parameters by current-voltage characteristics and Fraunhofer pattern indicate uniform ferromagnetic layer thicknesses and the same interface transparencies for etched and nonetched F layers. This technique could be used to tailor low-T-c Josephson junctions having controlled critical current densities at defined parts of the junction area, as needed for tunable resonators, magnetic-field driven electronics, or phase modulated devices. (c) 2007 American Institute of Physics.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000245317700088
%R 10.1063/1.2655487
%U https://juser.fz-juelich.de/record/56184