| Project/Area Number |
16K20997
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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 |
Condensed matter physics II
Condensed matter physics I
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| Research Institution | The University of Tokyo |
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Principal Investigator |
Takubo Kou 東京大学, 物性研究所, 特任研究員 (30738365)
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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 |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 共鳴軟X線散乱 / 電子構造 / 光誘起相転移 / 強相関電子系 / 遷移金属化合物の電子構造 / 光誘起相転移ダイナミクス / 遷移金属化合物 / 強相関電子 / X線磁気円偏光二色性 / 強相関系 / 光物性 / 物性実験 / X線 / 磁性 |
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| Outline of Final Research Achievements |
We studied the electronic structure of transition-metal chalcogenides exhibiting structural and superconducting transitions by means of resonant soft x-ray scattering (RSXS). In the sturdy of Ir1-xPtxTe2, charge-density-wavelike superstructures with wave vectors of Q = (1/5 0 －1/5), (1/8 0 －1/8), and (1/6 0 －1/6) are observed on the same sample at the lowest temperature, the patterns of which are controlled by the cooling speeds.
In the study of AFe2X3, a ‘separation' (polarization, energy) of the magnetic and orbital orderings at same Q=(1/2,1/2,0) in CsFe2Se3 and BaFe2S3 are observed on the RSXS spectra.
We constructed a time-resolved RSXS and x-ray magneto circular dichroism system at SPring-8 BL-07LSU and observed a photo-induced phase-transition in CsFe2Se3 on the time-resolved RSXS.
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