Study of spin-lattice interaction in cuprate superconductors using multiple quantum beam techniques
| Project/Area Number |
25390132
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Quantum beam science
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| Research Institution | Japan Atomic Energy Agency |
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Principal Investigator |
WAKIMOTO Shuichi 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門・量子ビーム応用研究センター, リーダー (40399415)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | 高温超伝導 / 中性子線 / 放射光X線 / 中性子散乱 / 放射光 / 多重自由度相関 / スピン格子相関 |
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| Outline of Final Research Achievements |
We performed neutron and synchrotron X-ray scattering study of high-Tc cuprate supeconductors to see entire magnetic escitations. The results shows that the magnetic excitation can be described by two components: one is high-energy dispersing excitation which reflects local interaction between spins, and the other is the low-energy compoment which reflects the itinerant character of the system. Detailed neutron scattering study of low energy magnetic component and the lattice dynamics, we found that the magnetic excitation strongly enhances at the energy where a certain phonon branch crosses, indicating a possible spin-lattice coupling. These results are important regarding the contribution of magnetic excitation to the superconductivity.
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Report
(4 results)
Research Products
(12 results)
