| Presentation | 1997/7/30 Properties of Josephson junctions using asymmetrical bicrystal substrates Y. Ishimaru, T. Utagawa, Y. Enomoto, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Grain boundary junctions consisting of (110) and (100) of YBa_2Cu_3O_<7-δ>(YBCO) were fabricated by using asymmetrical bicrystal MgO substrates. All of the junctions showed typical RSJ type I-V curves and Shapiro steps under microwave irradiation. Magnetic field dependence of Ic patterns (Ic-B, V-Φ patterns) showed the SQUID-like diffraction patterns which had a dip at zero magnetic field. The envelope curve of this SQUID-like pattern also had a dip at zero magnetic field. This unconventional properties are explained by existence of π-facet structure which is generated by combination between a specific facet at asymmetrical bicrystal substrates and d-wave gap symmetry. This property is consistent that the d-wave (dx^2-y^2) gap symmetry is in ab-planes of YBCO. This result shows that new applications using these artificially fabricated π-junctions may be realized. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | YBCO / asymmetrical bicrystal substrates / Josephson junction / SQUID / π-facet / dx^2-y^2 |
| Paper # | sce97-19 |
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| Conference Information | |
| Committee | SCE |
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| Conference Date | 1997/7/30(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
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| Paper Information | |
| Registration To | Superconductive Electronics (SCE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Properties of Josephson junctions using asymmetrical bicrystal substrates |
| Sub Title (in English) | |
| Keyword(1) | YBCO |
| Keyword(2) | asymmetrical bicrystal substrates |
| Keyword(3) | Josephson junction |
| Keyword(4) | SQUID |
| Keyword(5) | π-facet |
| Keyword(6) | dx^2-y^2 |
| 1st Author's Name | Y. Ishimaru |
| 1st Author's Affiliation | Superconductivity Research Laboratory-ISTEC:Fujitsu Laboratories Ltd() |
| 2nd Author's Name | T. Utagawa |
| 2nd Author's Affiliation | Superconductivity Research Laboratory-ISTEC |
| 3rd Author's Name | Y. Enomoto |
| 3rd Author's Affiliation | Superconductivity Research Laboratory-ISTEC |
| Date | 1997/7/30 |
| Paper # | sce97-19 |
| Volume (vol) | vol.97 |
| Number (no) | 219 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |