2012 Fiscal Year Final Research Report
Study on mechanism of iron-based superconductors by using many-variable variational Monte Carlo Study
| Project/Area Number |
23740261
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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
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| Research Institution | The University of Tokyo |
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Principal Investigator |
TAKAHIRO Misawa 東京大学, 大学院・工学系研究科, 助教 (10582687)
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| Project Period (FY) |
2011 – 2012
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| Keywords | 鉄系超伝導体 / 第一原理計算 / 強相関電子系 / 高温超伝導 |
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| Research Abstract |
We analyze ab initio low-energy effective models for iron-based superconductors by using many-variable variational Monte Carlo method. By analyzing five different materials, we show that the ab initio low-energy effective models successfully reproduce magnitudes of the magnetic ordered moment and magnetic-order patterns observed in iron-based superconductors. We also clarify that the iron-based superconductors are under strong influence of d Mott insulators. Furthermore, we examine the possibility of the superconductivity in electron-doped region.
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