| Project/Area Number |
16K17481
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Nanostructural physics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
YOSHIDA KENJI 東京大学, 生産技術研究所, 助教 (50738599)
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | テラヘルツ / 量子ナノ構造 / 量子物性 / 単一分子接合 / カーボンナノチューブ / 単一分子 / ナノ構造物性 / 量子ドット / ナノエレクトロニクス / 近藤効果 / 物性実験 / メゾスコピック系 / マイクロ・ナノデバイス |
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| Outline of Final Research Achievements |
Characteristic physical energies in single-molecule junctions lie in the terahertz frequency regime. They are expected to strongly interact with THz photons and THz electromagnetic waves have an impact on carrier dynamics in single-molecule junctions. However, experimental reports of electron transport in single-molecule junctions have so far been done in the DC regime, and the carrier dynamics has not been clear yet. In this research, we fabricated single-molecule transistors and analyzed THz-induced photocurrents generated by irradiating external THz electromagnetic fields onto the devices. By using this spectroscopic method, we successfully observed center-of-mass oscillation of organic molecules, which is a demonstration of THz spectroscopy at the single-molecule level. Furthermore, we applied the same method to single carbon-nanotube molecules and succeeded in observing THz-intersublevel transisions.
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