| Presentation | 2007-07-27 Evaluation of the Characteristic Voltage for Nb/AlO_x/Nb Josephson Junctions Masaaki MAEZAWA, Fuminori HIRAYAMA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The characteristic voltage V_c of Josephson junctions, which is defined as a product of the critical current I_c and normal-state resistance R_n is a key parameter in the electronics applications and also in the Josephson-device physics. We propose a precise method for evaluating the characteristic voltage V_c of superconductor-insulator-superconductor-type Josephson junctions. Statistical data for Nb/AlO_x/Nb junctions fabricated by using the AIST standard Nb technology are presented. The average of the experimental V_c was approximately 1.7 mV at 4.2 K, 75% of the predicted value by the Ambegaokar-Baratoff theory. The main cause of the discrepancy between the experiment and theory is not clear at the moment. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Josephson junction / Nb/AlO_x/Nb / Superconductor device / Characteristic voltage / I_cR_n product |
| Paper # | SCE2007-17 |
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| Conference Information | |
| Committee | SCE |
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| Conference Date | 2007/7/20(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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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) | Evaluation of the Characteristic Voltage for Nb/AlO_x/Nb Josephson Junctions |
| Sub Title (in English) | |
| Keyword(1) | Josephson junction |
| Keyword(2) | Nb/AlO_x/Nb |
| Keyword(3) | Superconductor device |
| Keyword(4) | Characteristic voltage |
| Keyword(5) | I_cR_n product |
| 1st Author's Name | Masaaki MAEZAWA |
| 1st Author's Affiliation | AIST() |
| 2nd Author's Name | Fuminori HIRAYAMA |
| 2nd Author's Affiliation | AIST |
| Date | 2007-07-27 |
| Paper # | SCE2007-17 |
| Volume (vol) | vol.107 |
| Number (no) | 171 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |