| Project/Area Number |
22540350
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Condensed matter physics II
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| Research Institution | Sophia University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
SEKINE Tomoyuki 上智大学, 理工学部, 名誉教授 (60110722)
TANAKA Hidekazu 東京工業大学, 理学部, 教授 (80188325)
MATSUMOTO Masashige 静岡大学, 理学部, 准教授 (20281058)
MASUDA Takatsugu 東京大学, 物性研究所, 准教授 (90313014)
TAKEMURA Kenichi 物質材料研究機構, ナノ物質ラボ, 主席研究員 (20171671)
HASE Masashi 物質材料研究機構, 量子ビームセンター, 主席研究員
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| Project Period (FY) |
2010-04-01 – 2013-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
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| Keywords | 磁気Raman 散乱 / 磁気励起 / Anderson-Higgs モード / Nambu-Goldstone モード / スピン・ギャップ / 多重極限環境 / マルチフェロイック物質 / 磁気 Raman 散乱 / Anderson-Higgsモード / 有効質量 / フラストレート系 / モット絶縁体 / 電荷移動 / 磁化測定 / 誘電率・分極測定 / 超高圧 / 光散乱 / 量子スピン系 / スピン・マルチプレット / 量子相転移 / 磁化・分極測定 |
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| Research Abstract |
We studied the magnetism on the spin-dimer system and the distorted-tetrahedral spin system by using the magnetic Raman scattering. For the spin-dimer system, from the points of view of theory and experiment, we clarified the first-order Anderson-Higgs mode in the antiferromagnetic phase induced by magnetic fields and high pressures. We have not observed the magnetic Raman scattering in a single crystal with the distorted tetrahedral spin chain.
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