| Presentation | 2001/1/17 Observation of recrystallization process of interface-modified barrier and the properties of interface-modified ramp-edge junctions Y. Ishimaru, Y. Wu, O. Horibe, H. Tano, T. Suzuki, Y. Tarutani, U. Kawabe, K. Tanabe, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We successfully observed RHEED patterns in recrystallization process of interfacemodified barrier by using a-axis oriented YBCO films. ECR ion bombardment was used for making an amorphous layer. RHEED patterns of a typical tri-layered perovskite structure was observed for as-deposited a-axis oriented YBCO films. A halo pattern showing the existence of an amorphous layer was changed to three types of patterns by changing the ECR and annealing conditions. The YBCO surface damaged at the higher ion acceleration voltage showed clear recrystallization to a-axis oriented YBCO after annealing. The surface damaged at lower voltages showed RHEED patterns different from that of a-axis oriented YBCO. In these case, regions with a cubic or a psude-cubic structure were observed at the interface by TEM. YBCO ramp-edge Josephson junctions fabricated under optimum conditions exhibited resistively and capacitively shunted junction (RCSJ)-like I-V curves with a typical IcRn product at 4.2K of 1～3mV. I-V characteristics of a 25JJ series-array at 4.2K showed the Ic spread 1σ was 13.5% for 25 junctions. |
| Keyword(in Japanese) | (See Japanese page) |
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| Paper # | SCE2000-39 |
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| Committee | SCE |
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| Conference Date | 2001/1/17(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| 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) | Observation of recrystallization process of interface-modified barrier and the properties of interface-modified ramp-edge junctions |
| Sub Title (in English) | |
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| 1st Author's Name | Y. Ishimaru |
| 1st Author's Affiliation | Superconductivity Research Laboratory-ISTEC() |
| 2nd Author's Name | Y. Wu |
| 2nd Author's Affiliation | Superconductivity Research Laboratory-ISTEC |
| 3rd Author's Name | O. Horibe |
| 3rd Author's Affiliation | Superconductivity Research Laboratory-ISTEC |
| 4th Author's Name | H. Tano |
| 4th Author's Affiliation | Superconductivity Research Laboratory-ISTEC:Chiba Institute of Technology |
| 5th Author's Name | T. Suzuki |
| 5th Author's Affiliation | Superconductivity Research Laboratory-ISTEC:Chiba Institute of Technology |
| 6th Author's Name | Y. Tarutani |
| 6th Author's Affiliation | Superconductivity Research Laboratory-ISTEC |
| 7th Author's Name | U. Kawabe |
| 7th Author's Affiliation | Chiba Institute of Technology |
| 8th Author's Name | K. Tanabe |
| 8th Author's Affiliation | Superconductivity Research Laboratory-ISTEC |
| Date | 2001/1/17 |
| Paper # | SCE2000-39 |
| Volume (vol) | vol.100 |
| Number (no) | 572 |
| Page | pp.pp.- |
| #Pages | 6 |
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