| 研究課題/領域番号 |
21K13885
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| 研究種目 |
若手研究
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| 配分区分 | 基金 |
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| 審査区分 |
小区分13030:磁性、超伝導および強相関系関連
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| 研究機関 | 芝浦工業大学 |
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研究代表者 |
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| 研究期間 (年度) |
2021-04-01 – 2025-03-31
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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 |
4,550千円 (直接経費: 3,500千円、間接経費: 1,050千円)
2024年度: 910千円 (直接経費: 700千円、間接経費: 210千円)
2023年度: 1,300千円 (直接経費: 1,000千円、間接経費: 300千円)
2022年度: 1,300千円 (直接経費: 1,000千円、間接経費: 300千円)
2021年度: 1,040千円 (直接経費: 800千円、間接経費: 240千円)
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| キーワード | Non-Fermi liquid / Penetration depth / Knight shift / Cooper pair / Strange metal / Spin freezing / Quantum entanglement / strange metal / non-Fermi liquid / SYK model / Hubbard model / QCP / AdS/CFT correspondence |
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| 研究開始時の研究の概要 |
The spin freezing crossover observed as a highly fluctuating spin in the metallic state and the Cooper pairing symmetry of two strange metal candidates known as a triangular lattice single-band Hubbard model system, k-(ET)4Hg2.89Br8 and k-(ET)4Hg2.78Cl8, will be studied by muon-spin relaxation.
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| 研究実績の概要 |
We synthesized more samples twice the weight of last year sample of k-HgBr and k-HgCl to improve the signal-to-noise ratio. We performed transverse field muSR on k-HgBr sample for the penetration depth measurement in the parallel and perpendicular mode. The muSR measurement on k-HgCl for the spin diffusion measurement down to dilution-refrigerator temperature is continued.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
2: おおむね順調に進展している
理由
The penetration depth measurement needs to be improved to get solid and complete data set, although an overview summary is being written up.
The spin diffusion measurement down to dilution-refrigerator temperature will be conducted in December 2024.
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| 今後の研究の推進方策 |
2024: Writing up main papers and execute a continuation. A related project fund has been proposed and applied.
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