Using thin-film ramp-type Josephson contacts between a high-Tc and a low-Tc super- conductor, experiments to study the dx2¡y2-wave-induced ¼-phase-shift e®ects in planar Josephson arrays have been enabled. The presented studies include the first experimental realization of various complex Josephson arrays with built-in ¼-phase shifts, investigations on the order parameter symmetry in various high-Tc cuprate superconductors, the first direct imaging of dx2¡y2-wave induced Josephson current counter flow, and half-integer magnetic-°ux quantum effects in one- and two-dimensional arrays.
|Award date||12 May 2005|
|Place of Publication||Enschede|
|Publication status||Published - 2005|