| 研究課題/領域番号 |
22K18693
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| 研究種目 |
挑戦的研究(萌芽)
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| 配分区分 | 基金 |
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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 | 大阪公立大学 |
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研究代表者 |
プラシデス コスマス 大阪公立大学, 大学院理学研究科, 客員研究員 (90719006)
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| 研究期間 (年度) |
2022-06-30 – 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 |
6,500千円 (直接経費: 5,000千円、間接経費: 1,500千円)
2023年度: 2,860千円 (直接経費: 2,200千円、間接経費: 660千円)
2022年度: 3,640千円 (直接経費: 2,800千円、間接経費: 840千円)
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| キーワード | Superconductivity / Molecular nanocarbons / Co-crystals / Charge injection / 2-dimensional |
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| 研究開始時の研究の概要 |
The project targets the synthesis of new crystalline materials with two-dimensional-layered hybrid architectures comprising C60 and polyaromatic hydrocarbon building blocks. These strongly-correlated Mott insulating phases will be further chemically (via alkali metal intercalation) and physically (via pressure application) manipulated to turn them into metals and superconductors.
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| 研究実績の概要 |
The project has developed new hybrid crystalline materials with two-dimensional-layered architectures comprising C60 and polyaromatic hydrocarbon (PAH) building blocks. The purpose of this work is to chemically manipulate such unique materials in order to drive insulator-to-metal transitions and unveil new magnetic and superconducting phases. To date, the work is being successfully pursued for the triphenylene PAH. Following successful synthesis of the 1:1 co-adduct of triphenylene with C60, we pursued state-of-the-art structural characterization with synchrotron XRD down to cryogenic temperatures revealing a series of structural phase transitions. The resulting hybrid solids have been successfully intercalated with alkali metals leading to a series of new phases which have been structurally characterized. Electronic characterization is now under active investigation.
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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 purpose of the project isto assemble unsaturated hydrocarbons of varying size, shape and electronic state together with C60 to generate new molecular electronic materials. This is being successfully carried out to an advanced stage. In particular, the resulting low-dimensional strongly correlated architectures are being manipulated chemically to investigate the possibility of switching on superconductivity and magnetism.
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| 今後の研究の推進方策 |
The research plan for the future years consists of three integrated components.
(A) Chemical synthesis. We will create hybrid co-crystals of PAHs of varying size and shape and C60 and initiate attempts to intercalate them with alkali metals to produce electron-doped systems.
(B) Structural analysis. We will carry out precise structural determination at low temperature and/or high pressure with synchrotron X-ray and neutron diffraction.
(C) Electronic properties. Detailed characterization of the electronic and magnetic properties will be pursued.
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