New methodologies in the development of thermoelectric materials based on heavy fermion systems
| Project/Area Number |
17K05552
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Condensed matter physics II
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| Research Institution | Toyota Technological Institute |
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Principal Investigator |
Matsunami Masaharu 豊田工業大学, 工学(系)研究科(研究院), 准教授 (30415301)
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 重い電子系 / 熱電材料 / 光電子分光 / 価数揺動 / 物性物理 |
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| Outline of Final Research Achievements |
The heavy-fermion systems such as Ce or Yb based compounds have been expected as a candidate for next generation high performance thermoelectric materials. In this study, we have investigated the thermoelectric properties such as electrical resistivity and Seebeck coefficient of several heavy-fermion systems. In addition, by means of photoemission spectroscopy with a wide range of excitation energy, we have clarified the relationship between electronic structure and thermoelectric properties in heavy fermion materials. The present results can provide a guideline to tune the thermoelectric properties in heavy-fermion systems.
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| Academic Significance and Societal Importance of the Research Achievements |
重い電子系は，これまで主に基礎研究の分野で扱われてきたが，優れた機能性が眠っている可能性は高いと考えられている．その代表例が本研究の主題である熱電材料への応用である．本研究で得られた成果は，重い電子系を次世代の熱電材料として応用する上で，その熱電特性を制御するための指針を与え得る．したがって本研究は，伝統的な基礎研究対象を応用研究対象に拡張するものであり，ここに極めて重要な学際的意義がある．
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Report
(4 results)
Research Products
(8 results)
