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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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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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 / トポロジカル物質 / 第一原理電子状態計算 / 強誘電体 / 熱電材料 / 強誘電性 / 国際情報交換 / イタリア |
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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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Report
(4 results)
Research Products
(17 results)
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[Journal Article] Magnetodielectric detection of magnetic quadrupole order in Ba(TiO)Cu4(PO4)4 with Cu4O12 square cupolas2016
Author(s)
K. Kimura, P. Babkevich, M. Sera, M. Toyoda, K. Yamauchi, G. S. Tucker, J. Martius, T. Fennell, P. Manuel, D. D. Khalyavin, R. D. Johnson, T. Nakano, Y. Nozue, H. M. Ronnow, T. Kimura
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Journal Title
Nat. Commun.
Volume: 7
Issue: 1
Pages: 130391-7
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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