2017 Fiscal Year Final Research Report
Charge transport in photo-doped conductors
| Project/Area Number |
26287064
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Condensed matter physics I
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| Research Institution | Nagoya University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
太田 裕道 北海道大学, 電子科学研究所, 教授 (80372530)
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| Co-Investigator(Renkei-kenkyūsha) |
KOHNO Hiroshi 名古屋大学, 理学研究科, 教授 (10234709)
OKAZAKI Ryuji 東京理科大, 理工学部, 講師 (50599602)
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| Research Collaborator |
TANABE Kenji 名古屋大学, 理学研究科, 助教 (00714859)
FUJITA Masaru
SHIRAISHI Yuuka
MAIGNAN Antoine
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Keywords | 光物性 / セラミックス / 先端機能デバイス |
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| Outline of Final Research Achievements |
The purpose of this research is to create conductors by irradiating light to oxide insulators, to precisely measure their transport parameters, and to clarify the transport properties and microscopic mechanism of the photo-doped carrier.
Various insulators such as ZnS, ZnO, SrTiO3, CuO, La2CuO4, CuFeS2 were irradiated with light from visible to ultraviolet region. Then we quantitatively measured the photoconductivity, the photo-Hall coefficient, and the photo-Seebeck coefficient, and have clarified the transport characteristics of the photo-doped carrier. In particular, we have revealed that the thermopower is screened by quantum paraelectricity in SrTiO3. We have also found that thin films, single crystals and polycrystaline samples of ZnO show nearly the same saturated photo-Seebeck coefficient.
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| Free Research Field |
物性物理(実験)
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