2016 Fiscal Year Final Research Report
Bandstructure engineering of topological insulator by using transition-metal oxide
| Project/Area Number |
26800186
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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 | Osaka University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | トポロジカル絶縁体 / 第一原理計算 / 遷移金属酸化物 |
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| Outline of Final Research Achievements |
Topological matter has attracted much attention recently and developed its research in a wide region of material science. In the present research, as focusing on flexibility of perovskite structure, the first-principles materials design based on ferroelectric transition-metal oxides has been performed. It was revealed that the polar ionic distortion breaks the inversion symmetry so that the bands are spin split due to the spin-orbit coupling, which in turn results in the spin-valley coupling. Moreover, various material properties, such as thermoelectric effect and magnetism, were carefully investigated to clarify the physical mechanism.
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| Free Research Field |
物性理論
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