Search for itinerant helimagnet showing anomalous magnetotransport properties by high pressure synthesis
| Project/Area Number |
23685014
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Inorganic chemistry
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| Research Institution | The University of Tokyo |
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Principal Investigator |
ISHIWATA Shintaro 東京大学, 工学(系)研究科(研究院), 准教授 (00525355)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥29,900,000 (Direct Cost: ¥23,000,000、Indirect Cost: ¥6,900,000)
Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2012: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
Fiscal Year 2011: ¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000)
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| Keywords | 高圧合成 / らせん磁性 / スカーミオン / トポロジカルホール効果 / 遍歴磁性体 / ペロブスカイト型酸化物 / 異常高原子価 / 国際情報交換 / 酸素ホール / 異常ホール効果 |
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| Research Abstract |
A cubic perovskite SrFeO3 has been known for long as a rare oxide showing metallic conductivity and helimagnetic ordering, which can be a potential system hosting a topologically new phase such as a skyrmion lattice phase. In this study, we have for the first time succeeded in growing large single crystals of SrFeO3 and the related compounds by combining floating zone method and a high pressure technique. Based on the magnetic, resistivity, and Hall resistivity measurements, we have established the magnetic phase diagram containing a rich variety of novel helimagnetic phases. To study these phases in detail, we have performed polarized neutron diffraction measurements under magnetic field, and revealed that this is the novel multiple-Q helimagnetic system, whose propagation vectors are along the <111> equivalents.
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Report
(4 results)
Research Products
(66 results)
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[Journal Article] Multiple helimagnetic phases and topological Hall effect in epitaxial thin films of pristine and Co-doped SrFeO_32013
Author(s)
S. Chakraverty, T. Matsuda, H. Wadati, J. Okamoto, Y. Yamasaki, H. Nakao, Y. Murakami, S. Ishiwata, M. Kawasaki, Y. Taguchi, Y. Tokura, and H. Y. Hwang
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Journal Title
Related Report
Peer Reviewed
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[Journal Article] Possible skyrmion-lattice ground state in the B20 chiral-lattice magnet MnGe as seen via small-angle neutron scattering2012
Author(s)
N. Kanazawa, J.-H. Kim, D. S. Inosov, J. S. White, N. Egetenmeyer, J. L. Gavilano, S. Ishiwata, Y. Onose, T. Arima, B. Keimer, and Y. Tokura
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Journal Title
Phys. Rev. B
Volume: 86
Pages: 134425-134425
Related Report
Peer Reviewed
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[Journal Article] Emergent phenomena in perovskite-type manganites2012
Author(s)
Y. Taguchi, H. Sakai, D. Okuyama, S. Ishiwata, J. Fujioka, T. Fukuda, D. Hashizume, F. Kagawa, Y. Takahashi, R. Shimano, Y. Tokunaga, Y. Kaneko, A. Nakao, H. Nakao, Y. Murakami, K. Sugimoto, M. Takata, K. Yamauchi, S. Picozzi, A. Q. R. Baron, T. Arima, Y. Tokura
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Journal Title
Physica B
Volume: 407
Pages: 1685-1688
Related Report
Peer Reviewed
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[Journal Article] Magnetically-Driven Ferroelectric Atomic Displacements in perovskite like YMnO_32011
Author(s)
D. Okuyama, S. Ishiwata, Y. Takahashi, K. Yamauchi, S. Picozzi, K. Sugimoto, H. Sakai, M. Takata, R. Shimano, Y. Taguchi, T. Arima, and Y. Tokura
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Journal Title
Phys. Rev. B
Volume: 84
Pages: 54440-54440
Related Report
Peer Reviewed
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[Presentation] Novel multi-Q spiral spin texture in SrFeO_32014
Author(s)
S. Ishiwata, J. -H. Kim,D. Inosov,Y. Tokunaga, S. Seki, N. Kanazawa, R. Georgii, K. Seemann, G. Brandl, J. White,E. Nikola, J. Gavilano,Y. W. Long,Y. Kaneko, Y. Taguchi, T. Arima, B. Keimer, Y. Tokura
Organizer
APS March Meeting 2014
Place of Presentation
デンバー、米国
Related Report
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[Presentation] Novel multi-Q spiral spin texture in SrFeO32014
Author(s)
S. Ishiwata, J. -H. Kim，D. Inosov，Y. Tokunaga, S. Seki, N. Kanazawa, R. Georgii, K. Seemann, G. Brandl, J. White，E. Nikola, J. Gavilano，Y. W. Long，Y. Kaneko, Y. Taguchi, T. Arima, B. Keimer, Y. Tokura
Organizer
APS March Meeting 2014
Place of Presentation
USA、デンバー
Related Report
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[Presentation] 中性子散乱を用いたSrFeO3におけるトポロジカルスピンテクスチャーの観測2013
Author(s)
石渡晋太郎,J. -H. Kim,D. S. Inosov,徳永祐介,R. Georgii,K. Seemann,J. S. White,N. Egetenmeyer,J. L. Gavilano,関真一郎,金澤直也,Y. -W. Long,金子良夫,田口康二郎,有馬孝尚,B. Keimer,十倉好紀
Organizer
日本物理学会平成25年度秋期大会
Place of Presentation
徳島大学
Related Report
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[Presentation] 共鳴軟X線回折で見たSrFe_<1-x>Co_xO_3の磁気構造のCo置換量依存性2012
Author(s)
松田太一,和達大樹,田中良和,小島太郎,高田恭孝,大浦正樹,仙波泰徳,大橋治彦,辛埴,石渡晋太郎,Y. W. Long,金子良夫,田口康二郎,十倉好紀
Organizer
日本物理学会第67回年次大会
Place of Presentation
兵庫
Related Report
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[Presentation] 多彩ならせん磁気秩序を示すSrFe0.99Co0.01O3の単結晶中性子散乱2012
Author(s)
石渡晋太郎,Jung-Hwa Kim,Dmytro Inosov,Jonathan White,Egetenmeyer Nikola,Gavilano Jorge,Youwen Long,金子良夫,金澤直也,有馬孝尚,田口康二郎,Bernhard Keimer,十倉好紀
Organizer
日本物理学会平成24年度秋期大会
Place of Presentation
横浜
Related Report
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[Presentation] 共鳴軟X線回折で見たSrFe1-xCoxO3の磁気構造のCo置換量依存性2012
Author(s)
松田太一, 和達大樹, 田中良和, 小島太郎, 高田恭孝, 大浦正樹, 仙波泰徳, 大橋治彦, 辛埴, 石渡晋太郎, Y.W.Long, 金子良夫, 田口康二郎, 十倉好紀
Organizer
日本物理学会第67回年次大会
Place of Presentation
関西学院大学,兵庫県
Related Report
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