Improvement of critical current in Bi-based superconducting whisker and application for THz device
| Project/Area Number |
17K06362
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Electronic materials/Electric materials
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| Research Institution | Yonago National College of Technology |
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Principal Investigator |
Tanaka Hiromi 米子工業高等専門学校, その他部局等, 准教授 (60511491)
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| Co-Investigator(Kenkyū-buntansha) |
及川 大 豊田工業高等専門学校, 電気・電子システム工学科, 准教授 (40707808)
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| Project Period (FY) |
2017-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 電子・電気材料 / 電気輸送特性改善 / 解析・評価 / ウィスカー / 高温超伝導体 / テラヘルツ |
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| Outline of Final Research Achievements |
In this study, we conducted research to establish a fundamental technology for manufacturing THz wave oscillators. The intrinsic Josephson junction, which is the internal structure of the Bi2Sr2Can-1CunOy (Bi-based) high-temperature superconductor, was used to fabricate the device. In addition, a needle-like single crystal (whisker) that has both "high critical current density" and "excellent heat dissipation" required for high power THz device is used for the Bi-based high-temperature superconductor.
A whisker-only device was manufactured by low-temperature hydrogen annealing and its characteristics were evaluated. As a result, we succeeded in producing a stand-alone structure that can utilize the intrinsic Josephson junctions that exist in the Bi-based high-temperature superconducting whiskers.
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| Academic Significance and Societal Importance of the Research Achievements |
未利用周波数帯であるTHz波は、IoTやビックデータ技術が必要とする超高速無線通信(6G通信)への応用が期待されている。特に高温超伝導体を利用したTHz光源は、小型で簡単に発振素子を実現できるとして注目されている。しかしながら、光源の出力が不十分という問題があり実用化に至っていない。本研究では、この高温超伝導THz光源の性能改善のため、放熱性の高い単独型発振素子の作製を行い、基礎特性を得ることに成功した。本研究の進展により、THz発振素子の小型化・高出力化が促進され、無線通信の超高速化実現に寄与することができたと考えている。
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Report
(5 results)
Research Products
(34 results)
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[Journal Article] Crystal Growth, Structural Analysis, and Pressure-Induced Superconductivity in a AgIn5Se8 Single Crystal Explored by a Data-Driven Approach2020
Author(s)
Ryo Matsumoto, Zhufeng Hou, Hiroshi Hara, Shintaro Adachi, Hiromi Tanaka, Sayaka Yamamoto, Yoshito Saito, Hiroyuki Takeya, Tetsuo Irifune, Kiyoyuki Terakura, and Yoshihiko Takano
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Journal Title
Inorg. Chem.
Volume: 59
Issue: 1
Pages: 325-331
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Data-driven exploration for pressure-induced superconductors using diamond anvil cell with boron-doped diamond electrodes and undoped diamond insulating layer2020
Author(s)
Ryo Matsumoto, Zhufeng Hou, Shintaro Adachi, Masanori Nagao, Sayaka Yamamoto, Peng Song, Noriyuki Kataoka, Pedro Baptista de Castro, Kensei Terashima, Hiroyuki Takeya, Hiromi Tanaka, Takayoshi Yokoya, Tetsuo Irifune, Kiyoyuki Terakura, and Yoshihiko Takano
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Journal Title
High Pressure Research
Volume: 40
Issue: 1
Pages: 22-34
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Pressure-induced superconductivity in the layered pnictogen diselenide NdO0.8F0.2Sb1－xBixSe2 (x=0.3 and 0.7)2019
Author(s)
R. Matsumoto, Y. Goto, S. Yamamoto, K. Sudo, H. Usui, A. Miura, C. Moriyoshi, Y. Kuroiwa, S. Adachi, T. Irifune, H. Takeya, H. Tanaka, K. Kuroki, Y. Mizuguchi, and Y. Takano
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Journal Title
Phys. Rev. B
Volume: 100
Issue: 9
Pages: 094528-094528
DOI
Related Report
Peer Reviewed
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[Journal Article] Pressure-induced Superconductivity in Tin Sulfide2019
Author(s)
R. Matsumoto, P. Song, S. Adachi, Y. Saito, H. Hara, A. Yamashita, K. Nakamura, S. Yamamoto, H. Tanaka, T. Irifune, H. Takeya, and Y. Takano
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Journal Title
Physical Review B
Volume: 99
Issue: 18
Pages: 184502-184502
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] Data-driven Exploration for Pressure-induced Superconductors Using Novel Diamond Anvil Cell with Boron-doped Diamond Electrodes2019
Author(s)
MATSUMOTO, Ryo, Hou ZHUFENG, YAMAMOTO, Sayaka, Masanori NAGAO, ADACHI, Shintaro, YAMAMOTO, Takafumi, SAITO, Yoshito, Hiromi TANAKA, TERASHIMA, Kensei, Tetsuo IRIFUNE, TAKEYA, Hiroyuki, Kiyoyuki TERAKURA, TAKANO, Yoshihiko
Organizer
Material Research Meeting-2019 (MRM 2019), Session: D-3 (Science and Technology of Superconductivity), Abstracts, D3-11-I10.
Related Report
Int'l Joint Research
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[Presentation] Crystal Size Improvement of Bi2Sr2CaCu2O8+x Superconducting Whiskers Using Stress-controlled Precursors2019
Author(s)
YAMAMOTO, Sayaka, MATSUMOTO, Ryo, ADACHI, Shintaro, TAKANO, Yoshihiko, Hiromi TANAKA
Organizer
Material Research Meeting-2019 (MRM 2019), Session: D-3 (Science and Technology of Superconductivity), Abstracts, D3-11-P03. （ポスター発表）
Related Report
Int'l Joint Research
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[Presentation] 集束イオンビームを用いた超伝導回路のマスクレス描画2019
Author(s)
松本 凌, E. S. Sadki, 青戸 淳之介, 山本 紗矢香, 齋藤 嘉人, 足立 伸太郎, 田中 博美, 竹屋 浩幸, 高野 義彦
Organizer
2019年第80回応用物理学会秋季学術講演会, 講演予稿集, 19p-C213-9. （口頭発表）
Related Report
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[Presentation] Superconducting Joints Using Bi-added PbSn Solders2018
Author(s)
Ryo Matsumoto, Hirotsugu Iwata, Aichi Yamashita, Hiroshi Hara, Gen Nishijima, Hiromi Tanaka, Masashi Tanaka, Hiroyuki Takeya, Yoshihiko Takano
Organizer
30th Internatioal Symposium on Superconductivity, Abstracts, 30 (2017) WBP5-4.
Related Report
Int'l Joint Research
