Weides, M. , Tillmann, K. and Kohlstedt, H. (2006) Fabrication of high quality ferromagnetic Josephson junctions. Physica C: Superconductivity, 437-38, pp. 349-352. (doi: 10.1016/j.physc.2005.12.046)
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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.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Weides, Professor Martin |
| Authors: | Weides, M., Tillmann, K., and Kohlstedt, H. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | Physica C: Superconductivity |
| Publisher: | Elsevier |
| ISSN: | 0921-4534 |
| ISSN (Online): | 1873-2143 |
| Published Online: | 26 January 2006 |
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