2016 Fiscal Year Final Research Report
Fabrication of superlattice films of iron-based superconductors
| Project/Area Number |
15K17697
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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 | Tohoku University (2016)
The University of Tokyo (2015) |
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Principal Investigator |
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| Research Collaborator |
MAEDA Atsutaka 東京大学, 大学院総合文化研究科, 教授 (70183605)
NABESHIMA Fuyuki 東京大学, 大学院総合文化研究科, 助教 (30782776)
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Keywords | 鉄系超伝導体 / 薄膜 / 人工超格子構造 |
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| Outline of Final Research Achievements |
I investigated properties of FeSe1-xTex thin films and fabricated FeSe/FeTe superlattice thin films. In FeSe1-xTex films, structural transition temperature decreases with increasing x and the highest Tc is obtained at the composition where structural transition disappears.
In FeSe/FeTe superlattice films, x-ray diffraction patterns show clear satellite peaks demonstrating periodic stacking structures of FeSe and FeTe. The anisotropy of the upper critical field shows that the superconducting layer is not FeSe layer but FeTe layer because of the Se/Te interdiffusion at the interface.
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| Free Research Field |
低温物理学
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