Quantum transport phenomena and dynamics in frustrated itinerant electron systems
| Project/Area Number |
24340076
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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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 |
Motome Yukitoshi 東京大学, 工学(系)研究科(研究院), 教授 (40323274)
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| Co-Investigator(Kenkyū-buntansha) |
UDAGAWA MASAFUMI 学習院大学, 理学部, 准教授 (80431790)
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| Project Period (FY) |
2012-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥19,760,000 (Direct Cost: ¥15,200,000、Indirect Cost: ¥4,560,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2014: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2012: ¥10,010,000 (Direct Cost: ¥7,700,000、Indirect Cost: ¥2,310,000)
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| Keywords | 強相関系 / 磁性 / フラストレーション / 量子輸送 / トポロジー / ダイナミクス |
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| Outline of Final Research Achievements |
The systems in which itinerant electrons interact with localized moments have been a central issue in condensed matter physics. We have theoretically investigated novel magnetism, electronic transport, and dynamics in such spin-charge coupled systems, especially, induced by geometrical frustration in the lattice structures. In particular, we have clarified the emergence of topological electronic structures under peculiar magnetic textures with noncollinear and noncoplanar spin superstructures, and the associated novel dynamics due to the surface, interface, and quantum dislocations, such as domain walls and vortices. As the representative outcomes, we have discovered the emergence of Dirac electronic state by spontaneous formation of spin textures and the multipole ordering and spin Hall effect induced by spontaneous breaking of spatial inversion symmetry.
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Report
(5 results)
Research Products
(139 results)
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[Journal Article] Possible observation of highly itinerant quantum magnetic monopoles in the frustrated pyrochlore Yb2Ti2O72016
Author(s)
Y. Tokiwa,T. Yamashita, M. Udagawa, S. Kittaka, T. Sakakibara, D. Terazawa, Y. Shimoyama, T. Terashima, Y. Yasui, T. Shibauchi, Y. Matsuda
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Journal Title
Nature Communications
Volume: 7
Issue: 1
Pages: 10807-10807
DOI
NAID
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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