| Project/Area Number |
19J21720
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| Research Category |
Grant-in-Aid for JSPS Fellows
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| Allocation Type | Single-year Grants |
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| Section | 国内 |
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| Review Section |
Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related
|
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| Research Institution | The University of Tokyo |
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Principal Investigator |
許 明然 東京大学, 新領域創成科学 研究科, 特別研究員(DC1)
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| Project Period (FY) |
2019-04-25 – 2022-03-31
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| Project Status |
Completed (Fiscal Year 2021)
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| Budget Amount *help |
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 2021: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2020: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2019: ¥1,100,000 (Direct Cost: ¥1,100,000)
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| Keywords | magneto-rotation / magnon-phonon coupling / mgneto-elastic coupling / non-reciprocity / Magnon / Phonon / Surface acoustic wave / Magnetoelastic wave / Spin wave / Nonreciprocity / Magneto-rotation / Suface acoustic waves |
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| Outline of Research at the Start |
The present research proposal focuses on the experimental characterization of the direct coupling between mechanical oscillation and electron spin, towards further understanding of spin conversion phenomena, and future electronics devices.
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| Outline of Annual Research Achievements |
Microscopically, magnon-phonon coupling (MPC) is the force that correlates lattice and spin, i.e., associating magnetic energy. In recent, we observed a significant nonreciprocal behavior in MPC, which cannot be explained with conventional magneto-elastic coupling (MEC) based model, but can be fitted into the long time forgotten predication with magneto-rotation coupling (MRC). To further understand MRC and its connection with MEC, we performed a series MPC experiment on series NiFe alloys with modulated composition ratio. Systematic modulation of nonreciprocity has been observed. Besides, towards the application of MPC nonreciprocity, we designed and conduct a experiment with on a CoFeB(20 nm) thin film, where a magnetically controllable acoustic diode has been achieved.
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| Research Progress Status |
令和3年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
令和3年度が最終年度であるため、記入しない。
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