Development of single-component molecular conductors by using extended TTF-type dithiolate ligands with freedom of movement
Project/Area Number |
17K05846
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Functional solid state chemistry
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Research Institution | Nihon University |
Principal Investigator |
ZHOU Biao 日本大学, 文理学部, 教授 (80434067)
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Project Period (FY) |
2017-04-01 – 2022-03-31
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Project Status |
Completed (Fiscal Year 2021)
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Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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Keywords | 単一分子性伝導体 / ディラック電子系 / 分子運動自由度 / 拡張TTFジチオレン配位子 / 伝導性 / 磁性 / 分子配列 |
Outline of Final Research Achievements |
The single-component molecular conductors are newly emerging molecular materials, which have brought about diverse electronic phases originating from intramolecular multi-orbitals. The single-component molecular conductors [M(dmdt)2] (M = Ni, Pd, Pt) systems, are sought-after ambient-pressure molecular massless Dirac materials. Band calculations based on first-principles density functional theory reveal three-dimensional Dirac nodal lines lying approximately at the Fermi level. Temperature-insensitive conductivity and temperature-dependent spin susceptibility nearly vanishing at low temperature, in conjunction with the band-structure calculations, indicate that [M(dmdt)2] systems host strongly correlated massless Dirac electrons with nodal lines at ambient pressure, not previously substantiated in molecular materials.
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Academic Significance and Societal Importance of the Research Achievements |
単一分子性伝導体により常圧分子性ディラック電子系が実現されたことから、他の高圧分子性ディラック系では不可能な物性測定を容易に行う事が出来る。常圧下で種々の物性測定により、分子性ディラック電子系の物理的な性質を明らかにすることがひとつの鍵となる。また、単一分子性伝導体の中心金属の違いにより電子物性が大きく異なる特徴があることから、分子性物質の電子構造や、機能を理解するのに重要な情報を提供できると考えられる。
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Report
(6 results)
Research Products
(44 results)
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[Journal Article] Antiferromagnetic Mott insulating state in the single-component molecular material Pd(tmdt)22017
Author(s)
Rina Takagi, Dita Puspita Sari, Saidah Sakinah Mohd-Tajudin, Retno Ashi, Isao Watanabe, Shoji Ishibashi, Kazuya Miyagawa, Satomi Ogura, Biao Zhou, Akiko Kobayashi, and Kazushi Kanoda
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Journal Title
Physical Review B
Volume: 96
Issue: 21
Pages: 214432-214432
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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