2023 Fiscal Year Final Research Report
Develpment of superconducting spin valve josephson junctions
Project/Area Number |
21K04818
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 28020:Nanostructural physics-related
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Research Institution | Tokyo Institute of Technology |
Principal Investigator |
Takamura Yota 東京工業大学, 工学院, 助教 (20708482)
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Project Period (FY) |
2021-04-01 – 2024-03-31
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Keywords | スピントロニクス / 超伝導体 |
Outline of Final Research Achievements |
In this study, we evaluated CoFe2O4/Nb and Co2FeAlSi/Nb heterojunctions as material systems for superconducting spin Josephson junctions and conducted device fabrication and improvement. The interface evaluation between the ferromagnetic insulator and Nb confirmed that CoFe2O4/Nb exhibits a spin-related magnetoresistance effect. Optimization of nano-contact junctions was advanced. In the final year, a low-noise, high-sensitivity measurement system was introduced, successfully detecting spin signals. This provided crucial insights for the development of next-generation superconducting spintronics devices. Additionally, an international collaborative paper with MIT was published.
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Free Research Field |
スピントロニクス
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Academic Significance and Societal Importance of the Research Achievements |
本研究は、超伝導スピントロニクスデバイスの材料系としてCoFe2O4/NbとCo2FeAlSi/Nbヘテロ接合の有効性を示し、超伝導スピンバルブ効果を実証しました。これにより、超高感度で低エネルギー消費のスピントロニクスデバイスの開発に寄与し、次世代の情報処理技術の進展を促進します。さらに、MITとの国際共同研究を通じて、グローバルな学術交流を推進し、研究の信頼性と影響力を高めました。
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