| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1820992 | Physica C: Superconductivity and its Applications | 2006 | 4 Pages |
Abstract
We present ferromagnetic Nb/Al2O3/Ni60Cu40/Nb Josephson junctions (SIFS) with an ultrathin Al2O3 tunnel barrier. The junction fabrication was optimized regarding junction insulation and homogeneity of current transport. Using ion-beam-etching and anodic oxidation we defined and insulated the junction mesas. The additional 2 nm thin Cu-layer below the ferromagnetic NiCu (SINFS) lowered interface roughness and ensured very homogeneous current transport. A high yield of junctional devices with jc spreads less than 2% was obtained.
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Condensed Matter Physics
Authors
M. Weides, K. Tillmann, H. Kohlstedt,