| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1874771 | Physics Procedia | 2012 | 5 Pages |
Abstract
We have developed resistively shunted NbN junctions to realize superconducting single flux quantum circuits operating at 10Â K and/or high speed. The junctions consist of epitaxial NbN/AlN/NbN tunnel junctions and molybdenum (Mo) resistors fabricated on single-crystal MgO substrates. The junction qualities are systematically investigated in a wide range of critical current density (Jc). The gap voltage and the ratio of Rsg/RN were about 5.6Â mV and 11 for the junctions with the Jc of 10 kA/cm2, respectively. The overdamped Josephson junctions with parallel Mo resistors having a nominal sheet resistance showed non-hysteretic current-voltage characteristics for the junctions with Jc of 10 kA/cm2.
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Authors
Kazumasa Makise, Hirotaka Terai, Wang Zhen,