| Project/Area Number |
22KJ1096
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| Project/Area Number (Other) |
22J22007 (2022)
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| Research Category |
Grant-in-Aid for JSPS Fellows
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| Allocation Type | Multi-year Fund (2023)
Single-year Grants (2022) |
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| Section | 国内 |
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| Review Section |
Basic Section 13020:Semiconductors, optical properties of condensed matter and atomic physics-related
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| Research Institution | The University of Tokyo |
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Principal Investigator |
董 禹 東京大学, 物性研究所, 特別研究員(PD)
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| Project Period (FY) |
2023-03-08 – 2025-03-31
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| Project Status |
Completed (Fiscal Year 2024)
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| Budget Amount *help |
¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 2024: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2023: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2022: ¥900,000 (Direct Cost: ¥900,000)
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| Keywords | polarization / bulk photovoltaic effect / SHG / 2D materials / non-collinear spin / 2D magnets / Multiferroics / 3R MoS2 / strain |
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| Outline of Research at the Start |
Symmetry engineering is a simple but pioneering way to play with the symmetry of van der Waals materials. In my research, we want to demonstrate it by a magnet/magnet interface CrSBr/CrPS4 to create in-plane polarization by non-collinear spin structure at this interface, which is so-called artificial "multiferroics".
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| Outline of Annual Research Achievements |
During the three years ofJSPS DC1 and PD fellowship, I completed three projects.
The first one is the second harmonic generation (SHG) research on twisted WSe2/black phosphorus interface. We found that the in-plane polarization can be further tuned by the twist angle between WSe2 and BP. The manuscript is in preparation. The second one is the bulk piezo-photovoltaic effect in 3R-MoS2. We engineered the rotational symmetry of 3R-MoS2 by uniaxial strain and greatly enhanced its photocurrent response. This work is published in Nature Nanotechnology. The third one is SHG response of CrI3/CrCl3 interface. The polarization and toroidal moment are generated by the non-collinear spin structure formed in this magnet interface. The paper of this work is in preparation.
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