| Project/Area Number |
21K13885
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related
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| Research Institution | Shibaura Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2021-04-01 – 2025-03-31
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| Project Status |
Granted (Fiscal Year 2023)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2024: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Keywords | 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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| Outline of Research at the Start |
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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| Outline of Annual Research Achievements |
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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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
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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| Strategy for Future Research Activity |
2024: Writing up main papers and execute a continuation. A related project fund has been proposed and applied.
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