| Project/Area Number |
20540308
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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 I
|
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| Research Institution | Ibaraki University |
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Principal Investigator |
IGARASHI Junichi Ibaraki University, 理学部, 教授 (20127179)
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| Co-Investigator(Kenkyū-buntansha) |
TAKAHASHI Manabu 群馬大学, 大学院・工学研究科, 教授 (50250816)
NAGAO Tatsuya 群馬大学, 大学院・工学研究科, 准教授 (00237497)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2008: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | 共鳴弾性X線散乱 / 多重極秩序 / 空間反転対称性の破れ / 共鳴非弾性X線散乱 / 共鳴X線散乱 / 二次高調波生成 / 電気磁気効果 / E1-E2干渉項 / E1-M1干渉項 / 内殻励起スペクトル / 第一原理計算 / 磁気散乱 / 非弾性散乱 / 電荷励起 |
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| Research Abstract |
We have studied resonant x-ray scattering and related x-ray spectroscopy by constructing models based on detailed electronic structures. For systems with breaking space-inversion symmetry, we have clarified the origin of the characteristics in resonant x-ray scattering, x-ray absorption, optical absorption, and second-harmonic generation through detailed calculations. In the resonant inelastic x-ray scattering form LaMnO_3, we have calculated the spectra depending on the momentum transfer, having concluded that they arises from the charge excitations screening the core hole in the intermediate state.
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