Reciprocal accumulation of spins and charges in rare earth hydride bipolar conductors
| Project/Area Number |
15K04648
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Applied materials
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| Research Institution | Saitama University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
長谷川 繁彦 大阪大学, 産業科学研究所, 准教授 (50189528)
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| Co-Investigator(Renkei-kenkyūsha) |
AWANO Hiroyuki 豊田工業大学, 工学(系)研究科(研究院), 教授 (40571675)
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| Research Collaborator |
KUROKAWA Yuichiro
KITAJIMA Akira
HIGUCHI Koji
NAKAMURA Osamu
HANAJIRI Tatsuro
NAKAJIMA Yoshikata
TOKUDA Masahide
FUJII Yasuhiko
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | スピントロニクス / スピン軌道相互作用 / 両極性伝導 / 水素吸蔵体YH2 / スピン流の自律モード / スピン蓄積 / 電荷蓄積 / 共鳴ホール効果 / バイポーラ伝導 / 電流スピン偏極 / 異常ホール効果 |
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| Outline of Final Research Achievements |
We have proposed a new type of the Hall effect, the signal of which is amplified due to the generation of a sustaining mode of spin current. The conditions indispensable for the observation of the effect are (i) the presence of the transverse component of an effective electric field due to spin splitting in chemical potential in addition to the longitudinal component; (ii) the simultaneous presence of holes and electrons each having approximately the same characteristics; (iii) spin-polarized current injection from magnetized electrodes; (iv) the zero transverse current. The present model was experimentally verified by using van der Pauw-type Hall devices consisting of the nonmagnetic bipolar conductor YH2 and TbFeCo electrodes. Replacing Au electrodes with TbFeCo electrodes alters the Hall resistivity from the ordinary Hall effect to the anomalous Hall-like effect with an enhancement factor of approximately 50 at 4T, cosistent with the present model.
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Report
(4 results)
Research Products
(32 results)
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[Journal Article] Resonant Hall effect under generation of a self-sustaining mode of spin current in nonmagnetic bipolar conductors with identical characters between holes and electrons2018
Author(s)
Masamichi Sakai, Hiraku Takao, Tomoyoshi Matsunaga, Makoto Nishimagi, Keitaro Iizasa, Takahito Sakuraba, Koji Higuchi, Akira Kitajima, Shigehiko Hasegawa, Osamu Nakamura, Yuichiro Kurokawa, Hiroyuki Awano
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Journal Title
Japanese Journal of Appied Physics
Volume: 57
Issue: 3
Pages: 033001-033001
DOI
NAID
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Peer Reviewed / Int'l Joint Research
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[Presentation] Pt 触媒を用いて作製した半導体相 YH3のホール効果2018
Author(s)
菅沼 奈央, 佐藤 枢, 秋里 宗次郎, 三上 亮太1, 高橋 侑太郎1,芦沢 優吾, 酒井 政道,中村 修,花尻 達郎, 中島 義賢, 徳田 正秀, 藤井 泰彦
Organizer
第65回応用物理学会春季学術講演会
Related Report
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[Presentation] Purification of commercial yttrium metal: Removal of fuorine2016
Author(s)
Ayato Takenouchi, Takashi Otomo, Kota Niwa, Masamichi Sakai, Yoshiaki Saito, Tomoyuki Kirigane, Masashi Kosaka, Shigehiko Hasegawa, Osamu Nakamura
Organizer
The 18th International Conference on Crystal Growth and Epitaxy
Place of Presentation
名古屋国際会議場(愛知県、名古屋市)
Year and Date
2016-08-11
Related Report
Int'l Joint Research
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[Patent(Industrial Property Rights)] 希土類水素化物の製造方法、水素センサー及び薄膜トランジスター2017
Inventor(s)
中村修, 酒井政道, 坂井琢磨, 吉澤輝, 花尻達郎, 中島義賢
Industrial Property Rights Holder
中村修, 酒井政道, 坂井琢磨, 吉澤輝, 花尻達郎, 中島義賢
Industrial Property Rights Type
特許
Filing Date
2017
Related Report
