Observation of spinon spin currents
Project/Area Number |
16K13827
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Condensed matter physics II
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Research Institution | The University of Tokyo (2017) Tohoku University (2016) |
Principal Investigator |
Shiomi Yuki 東京大学, 大学院工学系研究科(工学部), 特任講師 (10633969)
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Project Period (FY) |
2016-04-01 – 2018-03-31
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Project Status |
Completed (Fiscal Year 2017)
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Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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Keywords | スピントロニクス / スピン流 / 量子スピン系 / スピン液体 / スピノン / マヨラナ粒子 / キタエフ模型 / スピンエレクトロニクス / 低温物性 / 磁性 |
Outline of Final Research Achievements |
In this research, we aimed at experimental demonstration of novel spin currents using spin excitations peculiar to quantum spin liquid states: spinon and Majorana particle. In a typical one-dimensional quantum spin-liquid Sr2CuO3 where the existence of spinon excitation has been established experimentally, we showed by using the spin Seebeck effect that application of a temperature gradient to Sr2CuO3 generates spinon spin currents. Furthermore, in a Kitaev spin liquid material RuCl3 which has attracted much attention in the condensed matter physics in the last few years, we observed the flow of Majorana particles due to a temperature gradient in thermal conductivity measurements.
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Report
(3 results)
Research Products
(16 results)
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[Journal Article] One-dimensional spinon spin currents2016
Author(s)
D. Hirobe, M. Sato, T. Kawamata, Y. Shiomi, K. Uchida, R. Iguchi, Y. Koike, S. Maekawa and E. Saitoh,
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Journal Title
Nature Physics
Volume: 13
Issue: 1
Pages: 30-34
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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