2016 Fiscal Year Final Research Report
Study on spin dynamics in shallow doped semiconductor by double magnetic resonance technique at ultra-low temperatures and under high magnetic field
| Project/Area Number |
26400331
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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 | University of Fukui |
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Principal Investigator |
Fujii Yutaka 福井大学, 遠赤外領域開発研究センター, 准教授 (40334809)
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| Co-Investigator(Renkei-kenkyūsha) |
MITSUDO Seitaro 福井大学, 遠赤外領域開発研究センター, 教授 (60261517)
MATSUBARA Akira 京都大学, 大学院理学研究科, 准教授 (00229519)
MIZUSAKI Takao 福井大学, 遠赤外領域開発研究センター, 非常勤講師 (20025448)
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| Research Collaborator |
ISHIKAWA Yuya 福井大学, 大学院工学研究科
OHYA Kenta 福井大学, 大学院工学研究科
MIURA Shunsuke 福井大学, 大学院工学研究科
VASILIEV Sergey Turku大学, Department of Physics and Astronomy, 上級研究員
LEE Soonchil 韓国科学技術院, Department of Physics, 教授
LEE SangGap 韓国基礎科学研究院, Division of Materials Science, 上級研究員
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 希薄ドープ半導体 / 超低温高周波磁気共鳴測定装置開発 / ESR/NMR二重磁気共鳴 / ファブリペロー型共振器 / 動的核偏極 / 国際共同研究 |
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| Outline of Final Research Achievements |
We have studied on shallow phosphorus-doped silicon semiconductor (Si:P), which is a promising candidate device of a magnetic resonance type quantum computer. We aimed to perform electron spin resonance (ESR) and nuclear magnetic resonance (NMR) measurements at ultra low temperature below 1 K and under high magnetic fields above 3 Tesla. These conditions are required to achieve quantum computation. First, we have developed a system for measuring ESR and NMR in the temperature range from room temperature to an ultra low temperature 0.1 K up to 4.6 Tesla, and a special resonator which make us possible to perform ESR and NMR for the sample in the cavity simultaneously. ESR measurements of Si:P have been carried out using this system and a polarization of phosphorus nucleus spins of up to 50% (several hundred times over the thermal equilibrium) have been observed. Further, we have studied in detail on spin dynamics of Si:P by international collaboration.
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| Free Research Field |
磁気共鳴・磁性
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