| 研究課題/領域番号 |
19H00645
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| 研究種目 |
基盤研究(A)
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| 配分区分 | 補助金 |
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| 応募区分 | 一般 |
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| 審査区分 |
中区分13:物性物理学およびその関連分野
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| 研究機関 | 東北大学 |
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研究代表者 |
Bauer Gerrit 東北大学, 材料科学高等研究所, 教授 (10620213)
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| 研究分担者 |
佐藤 浩司 東北大学, 金属材料研究所, 助教 (70708114)
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| 研究期間 (年度) |
2019-04-01 – 2024-03-31
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| 研究課題ステータス |
交付 (2023年度)
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| 配分額 *注記 |
44,980千円 (直接経費: 34,600千円、間接経費: 10,380千円)
2023年度: 8,190千円 (直接経費: 6,300千円、間接経費: 1,890千円)
2022年度: 8,190千円 (直接経費: 6,300千円、間接経費: 1,890千円)
2021年度: 8,190千円 (直接経費: 6,300千円、間接経費: 1,890千円)
2020年度: 8,190千円 (直接経費: 6,300千円、間接経費: 1,890千円)
2019年度: 12,220千円 (直接経費: 9,400千円、間接経費: 2,820千円)
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| キーワード | Spintronics / Magnonics / Cavities / Ferroelectrics / Spintoronics / magnonics / yttrium iron garnet / ferroelectrics / cavities / ferroelectriscs / Photon Cavities |
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| 研究開始時の研究の概要 |
We propose an input-output scattering theory of a new form of matter, viz. a composite assembly of magnetic and other macroscopic objects in microwave cavities. Two sub-mm magnetic spheres in a cavity form a magnonic hydrogen molecule by virtual exchange of cavity photons. A magnonic heterochemistry invokes added superconducting and/or ferroelectric elements. The non-linear collective dynamics are quantized at low temperature, and can be read-out optically, electrically, and mechanically, allowing microwave, electric, and optical long-distance information exchange and order parameter control.
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| 研究実績の概要 |
In the fiscal year 2022 we continued to carry out research on magnonics and magnon chemistry and published many papers in leading journals. The highlights of our theoretical work were (1)
Identification of long-distance spin transport by phonons that leads to a new form of a magnonic hydrogen molecule that is bonded by phonons. (2) We carried out our first steps in the field of van der Waals magnets and helped interpreting experiments in the Groningen group in the Netherlands, (3) We predicted a procedure to construct magnon cat states by bonding with a superconducting q-bit, which is a quantum magnon chemistry issue, (4) We pointed out the analogies and differences between magnons and ferrons that pave the wave of making heteromolecular states of both magnetic and electric character. (5) We explained experiments of non-local and non-linear magnon generation by magnetic nanowires on magnetic thin films.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
1: 当初の計画以上に進展している
理由
The project is proceeding beautifully, with most objectives being addressed and solved on schedule, but with the years new challenges appear in the form of new materials that emerge as promising objects to study the magnon chemistry as well as in managing the manpower.
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| 今後の研究の推進方策 |
We will focus on the new challenges for magnon chemistry that only very recently emerged in the form of new materials, viz. ferroelectrics, van der Waals multi-layered and 2D (anti)ferromagnets, and most recently altermagnets.
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