| Project/Area Number |
23540429
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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 | National Institute for Materials Science |
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Principal Investigator |
TAKEHANA Kanji 独立行政法人物質・材料研究機構, 表界面構造・物性ユニット, 主幹研究員 (50354361)
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| Co-Investigator(Renkei-kenkyūsha) |
TAKAMASU Tadashi 物質・材料研究機構, 表界面構造・物性ユニット, グループリーダー (60212015)
IMANAKA Yasutaka 物質・材料研究機構, 表界面構造・物性ユニット, グループリーダー (70354371)
MITSUI Tadashi 物質・材料研究機構, 表界面構造・物性ユニット, 主任研究員 (90343863)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2012: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2011: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | 分子性固体・有機導体 / グラフェン / サイクロトロン共鳴 / 強磁場 / 磁気光学分光測定 / サイクロトロン共鳴測定 |
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| Research Abstract |
Cyclotron resonance (CR) has been investigated on single-layer large-area graphene which was synthesized by chemical vapor deposition (CVD). As the experimental results, I found significant substrate dependence of the band velocity of the graphene. It could not be explained by the theoretical study using the many-body correction. It might be caused by other condition of the sample such as strains and/or fitness between the graphene and the substrate. I found that the CR peak of the lowest LL transition of 0=>+1(-1=>0) consist of two components and that the ratio of the intensities of these two peaks changes with applied magnetic fields.
In order to improve the present magneto-optical spectrometer in infrared region, I developed new detector unit which is installed just below the sample at the magnet center. I confirmed the detection of the infrared light using the detector unit up to B = 15 T.
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