| Project/Area Number |
23654121
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Condensed matter physics II
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| Research Institution | Osaka University |
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Principal Investigator |
SEKIYAMA Akira 大阪大学, 基礎工学研究科, 教授 (40294160)
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| Co-Investigator(Renkei-kenkyūsha) |
HIGASHIYA Atsuhi 摂南大学, 理工学部, 専任講師 (70415272)
KISS Takayuki 大阪大学, 基礎工学研究科, 准教授 (20391930)
FUJIWARA Hidenori 大阪大学, 基礎工学研究科, 助教 (00397746)
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| Research Collaborator |
TAMASAKU Kenji 理研, 放射光科学総合研究センター, 専任研究員
MORI Takeo 大阪大学, 基礎工学研究科, 大学院生
YAMAGUCHI Takashi 大阪大学, 基礎工学研究科, 大学院生
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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 |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 光電子分光 / 放射光 / 硬X線 / 偏光 / フェルミオロジー / 強相関電子系 / 希土類強相関電子系 / 結晶場分裂 / 波動関数 / 線二色性 / 放射光X線 |
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| Research Abstract |
We have developed the polarization-dependent hard x-ray photoemission system, by which the orbital character of conduction electrons in solids in addition to their energies and momenta can experimentally been probed. For the x-ray polarization switching, two-plate single-crystalline diamonds have been employed as a phase shifter. Furthermore, hard x-ray focusing technique (down to 25 micrometer) has also been introduced to improve the throughput, by which the intensity has become six times stronger than the previous condition. By using this system we have succeeded in revealing the electronic structure of strongly correlated materials where the Coulomb repulsion between the electrons is not negligible.
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