2012 Fiscal Year Final Research Report
Observation of magnetic excitations in 5d transition metal oxides by resonant inelastic scattering of synchrotron radiation x-rays
| Project/Area Number |
23740246
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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 I
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| Research Institution | Japan Atomic Energy Agency |
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Principal Investigator |
ISHII Kenji 独立行政法人日本原子力研究開発機構, 量子ビーム応用研究部門, 研究主幹 (40343933)
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| Project Period (FY) |
2011 – 2012
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| Keywords | X線散乱 / 非弾性散乱 / 磁気励起 / 強相関電子系 |
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| Research Abstract |
I demonstrated in this research that magnetic excitations in 5d transition metal oxides, focusing on iridium oxides here, can be observed by resonant inelastic scattering using synchrotron radiation x-rays. I introduced new optical devices and achieved the best energy resolution of 70 meV. Using the high-energy resolution, I successfully observed dispersive magnetic excitations in Sr_2_IrO_4 and Sr_3Ir_2O_7 and their temperature dependence, which clarified the effect of two-dimensional magnetic interaction in the materials.
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