| Project/Area Number |
17K14331
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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 | Tohoku University |
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Principal Investigator |
Hou Dazhi 東北大学, 材料科学高等研究所, 助教 (00704355)
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| Project Period (FY) |
2017-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | antiferromagnet / spin Hall effect / SMR / spin pumping / spin Seebeck effect / spintronics / spin valve / spin transistor / magnon spin valve |
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| Outline of Final Research Achievements |
We succeed to manipulate the spin transmission of an antiferromagnetic insulator by external
magnetic field which rotates the Neel vector. A new phenomenon "spin colossal magnetoresistance" is established in this study. This work also lays the foundation for the development of insulator-based spin current circuit. In addition, the magnetic field angle dependence of the SMR in a heavy metal/antiferromagnetic insulator bilayer is calculated analytically.
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| Academic Significance and Societal Importance of the Research Achievements |
我々は、反強磁性絶縁体に新しい効果、巨大スピン磁気抵抗を発見した。 これは全絶縁体スピン流回路への実質的な進歩であり、これは動作中のエネルギーコストがはるかに低く、それ故にグリーン社会に不可欠な装置である。 スピン流制御のメカニズムも我々の研究でよく理解されており、それはさらなるデバイス開発の基礎を築くものである。
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