| 研究課題/領域番号 |
21K03406
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| 研究種目 |
基盤研究(C)
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| 配分区分 | 基金 |
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| 応募区分 | 一般 |
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| 審査区分 |
小区分13010:数理物理および物性基礎関連
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| 研究機関 | 広島大学 |
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研究代表者 |
LEONOV ANDRIY 広島大学, 先進理工系科学研究科(理), 准教授 (30804851)
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| 研究期間 (年度) |
2021-04-01 – 2024-03-31
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| 研究課題ステータス |
完了 (2023年度)
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| 配分額 *注記 |
4,160千円 (直接経費: 3,200千円、間接経費: 960千円)
2023年度: 1,040千円 (直接経費: 800千円、間接経費: 240千円)
2022年度: 1,170千円 (直接経費: 900千円、間接経費: 270千円)
2021年度: 1,950千円 (直接経費: 1,500千円、間接経費: 450千円)
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| キーワード | skyrmion / hopfion / bimeron / DMI / Cu2OSeO3 / tilted spiral / A-phase / chiral magnets / neutron scattering / cone / spiral / liquid crystals / chirality |
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| 研究開始時の研究の概要 |
The aim of the project is by experimental and theoretical means to introduce different classes of oblique non-axisymmetric skyrmions and elucidate the principles of their meshing into a large diversity of extended three-dimensional skyrmionic networks in chiral magnets and liquid crystals.
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| 研究実績の概要 |
Novel classes of multidimensional chiral solitons were theoretically studied in chiral magnets and liquid crystals. Among the found solitons are: 1) torons and bobbers in thin layers of liquid crystals; 2) target-skyrmions and springs in bulk chiral magnets; 3) non-axisymmetric vertical and horizontal skyrmions within the conical states of chiral magnets; 4) two-dimensional merons of easy-axis and easy-plane varieties; 5) three-dimensional knotted hopfions in bulk helimagnets. A systematic study of the stability and ordering of low-temperature skyrmion and spiral states was undertaken in a bulk helimagnet Cu2OSeO3 through the use of versatile indirect techniques such as neutron scattering, magnetization and ac magnetic susceptibility measurements.
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