Magnetic spin conversion

2018 Fiscal Year Annual Research Report

• Project Area: nano spin conversion science
• Project/Area Number: 26103002
• Research Institution: The University of Tokyo
• Principal Investigator: 大谷 義近 東京大学, 物性研究所, 教授 (60245610)
• Co-Investigator(Kenkyū-buntansha): 新見 康洋 大阪大学, 理学研究科, 准教授 (00574617) ; Jansen Ronald 国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 首席研究員 (40600250) ; 松倉 文礼 東北大学, 国際集積エレクトロニクス研究開発センター, 教授 (50261574) ; 木村 崇 九州大学, 理学研究院, 教授 (80360535)
• Project Period (FY): 2014-07-10 – 2019-03-31
• Keywords: スピントルク / スピンホール効果 / スピン流電流相互変換 / スピン軌道相互作用

Outline of Annual Research Achievements

磁気的スピン変換では、新しいスピン変換現象の探索、非線形スピン変換手法の開拓、電界を用いた磁化状態制御の３課題の研究を進めてきた。新奇なスピン変換現象の探索に関しては、トポロジカルな電子構造を有する非共線反強磁性体に従来とは質的に異なる新奇な磁気スピンホール効果が発現することを見出した。
非線形的なスピン変換を実現するため、p波スピン三重項超伝導体の候補物質として最近注目され始めたBi/Ni薄膜におけるスピン輸送測定に取り組み、従来型超伝導体では発現しなかったスピン三重項を媒介とする新しいスピン変換現象の可能性を見出した。　Fe/MgOトンネル接合とSi伝導チャンネルを有する面内スピンバルブ素子を用いたスピン伝導測定から観測されるスピン蓄積信号が非線形な応答を示すこと、この現象の起源が、トンネル接合を介したスピン偏極電流の透過率のバイアス電圧依存性に起因していることを明らかにした。また、同接合における垂直磁気異方性の機構について考察した結果を論文として発表した。
電界を用いた磁化状態制御に関しては、80 nmφのCoFeB/MgO磁気トンネル接合において電界印加によって誘起される磁化歳差運動の時間分解測定から磁化運動に対する熱擾乱の影響を明らかにし、反転確率を向上させるための指針を示した。
その他、強磁性体、反強磁性体、フェリ磁性体およびそれらの非磁性体とのハイブリッドシステムにおける磁気的スピン変換についての研究を行った。重要な成果としては、反強磁性体を用いたスピントルク磁気メモリの動作実証、フェリ磁性体の角運動量補償温度におけるスキルミオンホール効果消失の観測などが挙げられる。上述のトポロジカル反強磁性体においても、強磁性体中の磁壁のダイナミクスによく似たスピントルク駆動を示すことも実験と数値計算の両面から突き止めた。

Research Progress Status

平成30年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

平成30年度が最終年度であるため、記入しない。

Research Products

• [Journal Article] Relation between spin Hall effect and anomalous Hall effect in 3d ferromagnetic metals (2019)
  • Author(s): Omori Yasutomo、Sagasta Edurne、Niimi Yasuhiro、Gradhand Martin、Hueso Luis E.、Casanova Felix、Otani YoshiChika
  • Journal Title: Physical Review B Volume: 99 Pages: 014403-1～6
  • DOI: https://doi.org/10.1103/PhysRevB.99.014403
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Magnetic and magnetic inverse spin Hall effects in a non-collinear antiferromagnet (2019)
  • Author(s): Kimata Motoi、Chen Hua、Kondou Kouta、Sugimoto Satoshi、Muduli Prasanta K.、Ikhlas Muhammad、Omori Yasutomo、Tomita Takahiro、MacDonald Allan. H.、Nakatsuji Satoru、Otani Yoshichika
  • Journal Title: Nature Volume: 565 Pages: 627～630
  • DOI: https://doi.org/10.1038/s41586-018-0853-0
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Nano-plate biosensor array using ultrafast heat transport through proteins (2019)
  • Author(s): Ogi Hirotsugu、Iwagami Shigeru、Nagakubo Akira、Taniguchi Takuya、Ono Teruo
  • Journal Title: Sensors and Actuators B: Chemical Volume: 278 Pages: 15～20
  • DOI: 10.1016/j.snb.2018.09.030
• [Journal Article] Perpendicular magnetic anisotropy and tunneling conductivity of epitaxial cobalt-ferrite (0 0 1) films grown on nonmagnetic metal films (2019)
  • Author(s): Naruse Katsuyoshi、Tanaka Masaaki、Nomura Kosuke、Taniguchi Takuya、Honda Syuta、Ono Teruo、Mibu Ko
  • Journal Title: Journal of Magnetism and Magnetic Materials Volume: 475 Pages: 721～726
  • DOI: 10.1016/j.jmmm.2018.12.025
• [Journal Article] Resistive detection of the Neel temperature of Cr2O3 thin films (2019)
  • Author(s): Iino Tatsuya、Moriyama Takahiro、Iwaki Hiroyuki、Aono Hikaru、Shiratsuchi Yu、Ono Teruo
  • Journal Title: Applied Physics Letters Volume: 114 Pages: 022402～022402
  • DOI: https://doi.org/10.1063/1.5082220
  • Peer Reviewed
• [Journal Article] Real-space and pulse-by-pulse analysis of domain wall creep induced by spin-Hall torque (2019)
  • Author(s): Ohkochi Takuo、Kim Kab-Jin、Kim Sanghoon、Yoshimura Yoko、Tanigawa Hironobu、Ohshima Norikazu、Koyama Tomohiro、Kotsugi Masato、Chiba Daichi、Ono Teruo、Kinoshita Toyohiko
  • Journal Title: Japanese Journal of Applied Physics Volume: 58 Pages: 023001～023001
  • DOI: https://doi.org/10.7567/1347-4065/aaf628
• [Journal Article] Vanishing skyrmion Hall effect at the angular momentum compensation temperature of a ferrimagnet (2019)
  • Author(s): Hirata Yuushou、Kim Duck-Ho、Kim Se Kwon、Lee Dong-Kyu、Oh Se-Hyeok、Kim Dae-Yun、Nishimura Tomoe、Okuno Takaya、Futakawa Yasuhiro、Yoshikawa Hiroki、Tsukamoto Arata、Tserkovnyak Yaroslav、Shiota Yoichi、Moriyama Takahiro、Choe Sug-Bong、Lee Kyung-Jin、Ono Teruo
  • Journal Title: Nature Nanotechnology Volume: 14 Pages: 232～236
  • DOI: 10.1038/s41565-018-0345-2
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Choking Nonlocal Magnetic Damping in Exchange-Biased Ferromagnets (2019)
  • Author(s): Moriyama Takahiro、Oda Kent、Ono Teruo
  • Journal Title: Physical Review Applied Volume: 11 Pages: 011001
  • DOI: 10.1103/PhysRevApplied.11.011001
  • Peer Reviewed
• [Journal Article] Magnetoresistance in Bilayers of Heavy Metal and Non-collinear Antiferromagnet (2019)
  • Author(s): Oda K.、Moriyama T.、Ono T.
  • Journal Title: Journal of the Magnetics Society of Japan Volume: 43 Pages: 1
  • DOI: 10.3379/msjmag.1901R001
• [Journal Article] Fabrication of Noncentrosymmetric Nb/V/Ta Superlattice and its Superconductivity (2019)
  • Author(s): Ando F.、Kan D.、Shiota Y.、Moriyama T.、Shimakawa Y.、Ono T.
  • Journal Title: Journal of the Magnetics Society of Japan Volume: 43 Pages: 17～20
  • DOI: 10.3379/msjmag.1903L001
  • Open Access
• [Journal Article] Enhanced spin-orbit torque via interface engineering in Pt/CoFeB/MgO heterostructures (2019)
  • Author(s): Lee Hae-Yeon、Kim Sanghoon、Park June-Young、Oh Young-Wan、Park Seung-Young、Ham Wooseung、Kotani Yoshinori、Nakamura Tetsuya、Suzuki Motohiro、Ono Teruo、Lee Kyung-Jin、Park Byong-Guk
  • Journal Title: APL Materials Volume: 7 Pages: 031110～031110
  • DOI: 10.1063/1.5084201
  • Open Access / Int'l Joint Research
• [Journal Article] Low Magnetic Damping of Ferrimagnetic GdFeCo Alloys (2019)
  • Author(s): Kim Duck-Ho、Okuno Takaya、Kim Se Kwon、Oh Se-Hyeok、Nishimura Tomoe、Hirata Yuushou、Futakawa Yasuhiro、Yoshikawa Hiroki、Tsukamoto Arata、Tserkovnyak Yaroslav、Shiota Yoichi、Moriyama Takahiro、Kim Kab-Jin、Lee Kyung-Jin、Ono Teruo
  • Journal Title: Physical Review Letters Volume: 122 Pages: 127203
  • DOI: 10.1103/PhysRevLett.122.127203
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Quantification of Spin Drift in Devices with a Heavily Doped Si Channel (2019)
  • Author(s): Spiesser A.、Fujita Y.、Saito H.、Yamada S.、Hamaya K.、Mizubayashi W.、Endo K.、Yuasa S.、Jansen R.
  • Journal Title: Physical Review Applied Volume: 11 Pages: 044020
  • DOI: https://doi.org/10.1103/PhysRevApplied.11.044020
  • Peer Reviewed
• [Journal Article] Thermal Spin-Valve Effect in Magnetic Multi-layered Nanowires (2019)
  • Author(s): N. Asam, K. Yamanoi, K. Ohnishi and T. Kimura
  • Journal Title: Journal of Superconductivity and Novel Magnetism Volume: 1 Pages: 1-5
  • DOI: https://doi.org/10.1007/s10948-019-5016-5
  • Peer Reviewed
• [Journal Article] Anomalous Hall effect in thin films of the Weyl antiferromagnet Mn3Sn (2018)
  • Author(s): Higo Tomoya、Qu Danru、Li Yufan、Chien C. L.、Otani Yoshichika、Nakatsuji Satoru
  • Journal Title: Applied Physics Letters Volume: 113 Pages: 202402-1～4
  • DOI: https://doi.org/10.1063/1.5064697
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Unveiling the mechanisms of the spin Hall effect in Ta (2018)
  • Author(s): Sagasta Edurne、Omori Yasutomo、S. Velez, R. Llopis、Tollan Christopher、Chuvilin Andrey、Hueso Luis E.、Gradhand Martin、Otani YoshiChika、Casanova Felix
  • Journal Title: Physical Review B Volume: 98 Pages: 060410-1～7
  • DOI: https://doi.org/10.1103/PhysRevB.98.060410
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Spin Relaxation Enhanced by Decorating Cu Surfaces With Lead (II) Phthalocyanine Molecules (2018)
  • Author(s): Takizawa S.、Kondou K.、Isshiki H.、Shimose K.、Kawabe T.、Miwa S.、Otani Y.
  • Journal Title: IEEE Transactions on Magnetics Volume: 54 Pages: 4100304-1～4
  • DOI: https://doi.org/10.1109/TMAG.2018.2846364
  • Peer Reviewed
• [Journal Article] Magnetothermodynamic Properties and Anomalous Magnetic Phase Transition in FeRh Nanowires (2018)
  • Author(s): Matsumoto K.、Kimata M.、Kondou K.、Temple R. C.、Marrows C. H.、Otani Y.
  • Journal Title: IEEE Transactions on Magnetics Volume: 54 Pages: 2300904-1～4
  • DOI: https://doi.org/10.1109/TMAG.2018.2832191
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Efficient spin current generation and suppression of magnetic damping due to fast spin ejection from nonmagnetic metal/indium-tin-oxide interfaces (2018)
  • Author(s): Kondou Kouta、Tsai Hanshen、Isshiki Hironari、Otani YoshiChika
  • Journal Title: APL Materials Volume: 6 Pages: 101105-1～8
  • DOI: https://doi.org/10.1063/1.5050848
  • Peer Reviewed
• [Journal Article] Large enhancement of the spin Hall effect in Mn metal by Sn doping (2018)
  • Author(s): Qu D.、Higo T.、Nishikawa T.、Matsumoto K.、Kondou K.、Nishio-Hamane D.、Ishii R.、Muduli P. K.、Otani Y.、Nakatsuji S.
  • Journal Title: Physical Review Materials Volume: 2 Pages: 102001-1～7
  • DOI: https://doi.org/10.1103/PhysRevMaterials.2.102001
  • Peer Reviewed
• [Journal Article] Detection of the interfacial exchange field at a ferromagnetic insulator-nonmagnetic metal interface with pure spin currents (2018)
  • Author(s): Muduli P. K.、Kimata M.、Omori Y.、Wakamura T.、Dash Saroj P.、Otani YoshiChika
  • Journal Title: Physical Review B Volume: 98 Pages: 024416-1～9
  • DOI: https://doi.org/10.1103/PhysRevB.98.024416
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Spin accumulation at nonmagnetic interface induced by direct Rashba-Edelstein effect (2018)
  • Author(s): Auvray Florent、Puebla Jorge、Xu Mingran、Rana Bivas、Hashizume Daisuke、Otani Yoshichika
  • Journal Title: Journal of Materials Science: Materials in Electronics Volume: 29 Pages: 15664～15670
  • DOI: https://doi.org/10.1007/s10854-018-9162-5
  • Peer Reviewed
• [Journal Article] Direct current modulation of spin-Hall-induced spin torque ferromagnetic resonance in platinum/permalloy bilayer thin films (2018)
  • Author(s): Hirayama Shigeyuki、Mitani Seiji、Otani YoshiChika、Kasai Shinya
  • Journal Title: Japanese Journal of Applied Physics Volume: 57 Pages: 060301-1～4
  • DOI: https://doi.org/10.7567/JJAP.57.060301
  • Peer Reviewed
• [Journal Article] Quantum materials for spin and charge conversion (2018)
  • Author(s): Han Wei、Otani YoshiChika、Maekawa Sadamichi
  • Journal Title: npj Quantum Materials Volume: 3 Pages: 27-1～16
  • DOI: https://doi.org/10.1038/s41535-018-0100-9
  • Int'l Joint Research
• [Journal Article] Inverse Edelstein effect induced by magnon-phonon coupling (2018)
  • Author(s): Xu Mingran、Puebla Jorge、Auvray Florent、Rana Bivas、Kondou Kouta、Otani Yoshichika
  • Journal Title: Physical Review B Volume: 97 Pages: 180301-1～4
  • DOI: https://doi.org/10.1103/PhysRevB.97.180301
  • Peer Reviewed
• [Journal Article] Electrical contacts to thin layers of Bi2Sr2CaCu2O8+δ (2018)
  • Author(s): Suzuki Shota、Taniguchi Hiroki、Kawakami Tsukasa、Cosset-Cheneau Maxen、Arakawa Tomonori、Miyasaka Shigeki、Tajima Setsuko、Niimi Yasuhiro、Kobayashi Kensuke
  • Journal Title: Applied Physics Express Volume: 11 Pages: 053201-1～4
  • DOI: https://doi.org/10.7567/APEX.11.053201
  • Peer Reviewed
• [Journal Article] Spin-wave wavelength down-conversion at thickness steps (2018)
  • Author(s): Stigloher Johannes、Taniguchi Takuya、Madami Marco、Decker Martin、Korner Helmut S.、Moriyama Takahiro、Gubbiotti Gianluca、Ono Teruo、Back Christian H.
  • Journal Title: Applied Physics Express Volume: 11 Pages: 053002～053002
  • DOI: 10.7567/APEX.11.053002
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Determination of perpendicular magnetic anisotropy based on the magnetic droplet nucleation (2018)
  • Author(s): Nishimura Tomoe、Kim Duck-Ho、Okuno Takaya、Hirata Yuushou、Futakawa Yasuhiro、Yoshikawa Hiroki、Kim Sanghoon、Tsukamoto Arata、Shiota Yoichi、Moriyama Takahiro、Ono Teruo
  • Journal Title: Japanese Journal of Applied Physics Volume: 57 Pages: 050308～050308
  • DOI: 10.7567/JJAP.57.050308
  • Peer Reviewed
• [Journal Article] Microscopic Investigation into the Electric Field Effect on Proximity-Induced Magnetism in Pt (2018)
  • Author(s): Yamada K. T.、Suzuki M.、Pradipto A.-M.、Koyama T.、Kim S.、Kim K.-J.、Ono S.、Taniguchi T.、Mizuno H.、Ando F.、Oda K.、Kakizakai H.、Moriyama T.、Nakamura K.、Chiba D.、Ono T.
  • Journal Title: Physical Review Letters Volume: 120 Pages: 157203
  • DOI: 10.1103/PhysRevLett.120.157203
  • Peer Reviewed
• [Journal Article] Correlation between magnetic properties and depinning field in field-driven domain wall dynamics in GdFeCo ferrimagnets (2018)
  • Author(s): Nishimura Tomoe、Kim Duck-Ho、Hirata Yuushou、Okuno Takaya、Futakawa Yasuhiro、Yoshikawa Hiroki、Tsukamoto Arata、Shiota Yoichi、Moriyama Takahiro、Ono Teruo
  • Journal Title: Applied Physics Letters Volume: 112 Pages: 172403～172403
  • DOI: 10.1063/1.5022809
  • Peer Reviewed
• [Journal Article] Homodyne detection of ferromagnetic resonance by a non-uniform radio-frequency excitation current (2018)
  • Author(s): Ikebuchi Tetsuya、Moriyama Takahiro、Shiota Yoichi、Ono Teruo
  • Journal Title: Applied Physics Express Volume: 11 Pages: 053008～053008
  • DOI: 10.7567/APEX.11.053008
  • Peer Reviewed
• [Journal Article] Effect of depinning field on determination of angular-momentum-compensation temperature of ferrimagnets (2018)
  • Author(s): Hirata Yuushou、Kim Duck-Ho、Okuno Takaya、Nishimura Tomoe、Futakawa Yasuhiro、Yoshikawa Hiroki、Ham Wooseung、Kim Sanghoon、Tsukamoto Arata、Shiota Yoichi、Moriyama Takahiro、Kim Kab-Jin、Ono Teruo
  • Journal Title: Applied Physics Express Volume: 11 Pages: 063001～063001
  • DOI: 10.7567/APEX.11.063001
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Electric field effect on exchange interaction in ultrathin Co films with ionic liquids (2018)
  • Author(s): Ishibashi Mio、Yamada Kihiro T.、Shiota Yoichi、Ando Fuyuki、Koyama Tomohiro、Kakizakai Haruka、Mizuno Hayato、Miwa Kazumoto、Ono Shimpei、Moriyama Takahiro、Chiba Daichi、Ono Teruo
  • Journal Title: Applied Physics Express Volume: 11 Pages: 063002～063002
  • DOI: 10.7567/APEX.11.063002
  • Peer Reviewed
• [Journal Article] Correlation of the Dzyaloshinskii-Moriya interaction with Heisenberg exchange and orbital asphericity (2018)
  • Author(s): Kim Sanghoon、Ueda Kohei、Go Gyungchoon、Jang Peong-Hwa、Lee Kyung-Jin、Belabbes Abderrezak、Manchon Aurelien、Suzuki Motohiro、Kotani Yoshinori、Nakamura Tetsuya、Nakamura Kohji、Koyama Tomohiro、Chiba Daichi、Yamada Kihiro. T.、Kim Duck-Ho、Moriyama Takahiro、Kim Kab-Jin、Ono Teruo
  • Journal Title: Nature Communications Volume: 9 Pages: 1648
  • DOI: 10.1038/s41467-018-04017-x
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Microscopic origin of electric-field-induced modulation of Curie temperature in cobalt (2018)
  • Author(s): Ando Fuyuki、Yamada Kihiro T.、Koyama Tomohiro、Ishibashi Mio、Shiota Yoichi、Moriyama Takahiro、Chiba Daichi、Ono Teruo
  • Journal Title: Applied Physics Express Volume: 11 Pages: 073002～073002
  • DOI: 10.7567/APEX.11.073002
  • Peer Reviewed
• [Journal Article] Correlation between compensation temperatures of magnetization and angular momentum in GdFeCo ferrimagnets (2018)
  • Author(s): Hirata Yuushou、Kim Duck-Ho、Okuno Takaya、Nishimura Tomoe、Kim Dae-Yun、Futakawa Yasuhiro、Yoshikawa Hiroki、Tsukamoto Arata、Kim Kab-Jin、Choe Sug-Bong、Ono Teruo
  • Journal Title: Physical Review B Volume: 97 Pages: 220403
  • DOI: https://doi.org/10.1103/PhysRevB.97.220403
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Spin-Current Generation in Low-Damping Ni0.65Zn0.35Al0.8Fe1.2O4 Spinel Ferrite (2018)
  • Author(s): Gray M. T.、Emori S.、Gray B. A.、Jeon H.、J. van ’t Erve O. M.、Jonker B. T.、Kim S.、Suzuki M.、Ono T.、Howe B. M.、Suzuki Y.
  • Journal Title: Physical Review Applied Volume: 9 Pages: 064039
  • DOI: 10.1103/PhysRevApplied.9.064039
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Evaluation of electric field effect on interface magnetic properties by propagating spin wave in Pt/Co/MgO structures (2018)
  • Author(s): Kasukawa Shuhei、Shiota Yoichi、Moriyama Takahiro、Ono Teruo
  • Journal Title: Japanese Journal of Applied Physics Volume: 57 Pages: 080309～080309
  • DOI: 10.7567/JJAP.57.080309
  • Peer Reviewed
• [Journal Article] Spin current transmission in polycrystalline NiO films (2018)
  • Author(s): Ikebuchi Tetsuya、Moriyama Takahiro、Mizuno Hayato、Oda Kent、Ono Teruo
  • Journal Title: Applied Physics Express Volume: 11 Pages: 073003～073003
  • DOI: 10.7567/APEX.11.073003
  • Peer Reviewed
• [Journal Article] Spin torque control of antiferromagnetic moments in NiO (2018)
  • Author(s): Moriyama Takahiro、Oda Kent、Ohkochi Takuo、Kimata Motoi、Ono Teruo
  • Journal Title: Scientific Reports Volume: 8 Pages: 14167
  • DOI: 10.1038/s41598-018-32508-w
  • Peer Reviewed / Open Access
• [Journal Article] Spin-Orbit-Torque Memory Operation of Synthetic Antiferromagnets (2018)
  • Author(s): Moriyama Takahiro、Zhou Weinan、Seki Takeshi、Takanashi Koki、Ono Teruo
  • Journal Title: Physical Review Letters Volume: 121 Pages: 167202
  • DOI: 10.1103/PhysRevLett.121.167202
  • Peer Reviewed
• [Journal Article] Electric Field-Induced Creation and Directional Motion of Domain Walls and Skyrmion Bubbles (2018)
  • Author(s): Ma Chuang、Zhang Xichao、Xia Jing、Ezawa Motohiko、Jiang Wanjun、Ono Teruo、Piramanayagam S. N.、Morisako Akimitsu、Zhou Yan、Liu Xiaoxi
  • Journal Title: Nano Letters Volume: 19 Pages: 353～361
  • DOI: 10.1021/acs.nanolett.8b03983
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Magnetic domain writing defined by electrical gating in Pt/Co film (2018)
  • Author(s): Ando Fuyuki、Ishibashi Mio、Koyama Tomohiro、Shiota Yoichi、Moriyama Takahiro、Chiba Daichi、Ono Teruo
  • Journal Title: Applied Physics Letters Volume: 113 Pages: 252402～252402
  • DOI: https://doi.org/10.1063/1.5078553
  • Peer Reviewed
• [Journal Article] Nonlinear Electrical Spin Conversion in a Biased Ferromagnetic Tunnel Contact (2018)
  • Author(s): Jansen R.、Spiesser A.、Saito H.、Fujita Y.、Yamada S.、Hamaya K.、Yuasa S.
  • Journal Title: Physical Review Applied Volume: 10 Pages: 064050
  • DOI: https://doi.org/10.1103/PhysRevApplied.10.064050
  • Peer Reviewed
• [Journal Article] Substantial enhancement of thermal spin polarization in Py/Cu interface (2018)
  • Author(s): Hu Shaojie、Zhao Jingyan、Wang Lei、Cui Xiaomin、Ohnishi Kohei、Ariki Taisei、Min Tai、Xia Ke、Kimura Takashi
  • Journal Title: Physical Review Materials Volume: 2 Pages: 104403
  • DOI: https://doi.org/10.1103/PhysRevMaterials.2.104403
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Temperature evolution of the charge and spin transport in Cu/Nb interface (2018)
  • Author(s): Ishitaki Masayuki、Ohnishi Kohei、Kimura Takashi
  • Journal Title: Japanese Journal of Applied Physics Volume: 57 Pages: 060310～060310
  • DOI: https://doi.org/10.7567/JJAP.57.060310
  • Peer Reviewed
• [Journal Article] Possibility of Cooper-pair formation controlled by multi-terminal spin injection (2018)
  • Author(s): Ohnishi K、Sakamoto M、Ishitaki M、Kimura T
  • Journal Title: Journal of Physics: Conference Series Volume: 969 Pages: 012028～012028
  • DOI: https://doi.org/10.1088/1742-6596/969/1/012028
  • Peer Reviewed
• [Presentation] Anomalous Nernst effect in a microfabricated Weyl magnet Mn3Sn (2019)
  • Author(s): H. Narita, T. Higo, M. Ikhlas, S. Nakatsuji & Y. Otani
  • Organizer: APS March Meeting 2019
  • Int'l Joint Research
• [Presentation] Observation of magnetic spin Hall effect and magnetic inverse spin Hall effect in a chiral antiferromagnet Mn3Sn (2019)
  • Author(s): K. Kondou, M. Kimata, H. Chen, S. Sugimoto, P. K. Muduli, M. Ikhlas, Y. Omori, T. Tomita, A. H. MacDonald, S. Nakatsuji & Y. Otani
  • Organizer: Topological Phases and Functionality of Correlated Electron Systems
  • Int'l Joint Research / Invited
• [Presentation] Spin to charge conversion via magnon-phonon coupling (2019)
  • Author(s): J. Puebla, M. Xu, F. Auvray, B. Rana, K. Kondou & Y. Otani
  • Organizer: Topological Phases and Functionality of Correlated Electron Systems
  • Int'l Joint Research
• [Presentation] Creation of skyrmions by surface acoustic waves (2019)
  • Author(s): T. Yokouchi, B. Rana, S. Sugimoto, S. Seki, N. Ogawa, S. Kasai & Y. Otani
  • Organizer: Topological Phases and Functionality of Correlated Electron Systems
  • Int'l Joint Research
• [Presentation] Comparison of spin Hall angles for epitaxial and polycrystalline platinum thin films (2019)
  • Author(s): Z. Zhu, T. Higo, J. Kim, K. Matsumoto, H. Isshiki, D. Qu, K. Kondou, S. Nakatsuji & Y. Otani
  • Organizer: Topological Phases and Functionality of Correlated Electron Systems
  • Int'l Joint Research
• [Presentation] Synthesis and Magnetic transport properties of antiferromagnet Mn3Ge, Mn3Sn thin films (2019)
  • Author(s): A. Kobayashi, T. Higo, D. Qu, S. Nakatsuji & Y. Otani
  • Organizer: Topological Phases and Functionality of Correlated Electron Systems
  • Int'l Joint Research
• [Presentation] Spin conversion phenomena in spintronics (2019)
  • Author(s): Y. Otani
  • Organizer: 53rd REIMEI International Workshop
  • Int'l Joint Research / Invited
• [Presentation] Spin conversion phenomena in spintronics (2019)
  • Author(s): Y. Otani
  • Organizer: Research Seminar, Sheffield University
• [Presentation] Novel functions observed in a topological antiferromagnet Mn3Sn (2019)
  • Author(s): Y. Otani
  • Organizer: 2019 Joint MMM-Intermag Conference
  • Int'l Joint Research / Invited
• [Presentation] Role of Cu/Al2O3 Rashba interface for the highly efficient spin manipulation (2019)
  • Author(s): J. Kim, H. Tsai, K. Kondou, H. W. Lee & Y. Otani
  • Organizer: 2019 Joint MMM-Intermag Conference
  • Int'l Joint Research
• [Presentation] Phase boundary exchange coupling in the mixed magnetic phase of B2-ordered FeRh Epilayer (2019)
  • Author(s): J. Massey, K. Matsumoto, M. Strungaru, R. C. Temple, T. Higo, K. Kondou, R. F. Evans, R.W. Chantrell, Y. Otani & C. H. Marrows
  • Organizer: 2019 Joint MMM-Intermag Conference
  • Int'l Joint Research / Invited
• [Presentation] Unveilling the mechanisms of the spin Hall effect in Ta (2019)
  • Author(s): E. Sagasta, Y. Omori, S. Velez, R. Llopis, C. Tollan, A. Chuvilin, L. E. Hueso, M. Gradhand, Y. Otani & F. Casanova
  • Organizer: 2019 Joint MMM-Intermag Conference
  • Int'l Joint Research
• [Presentation] Large magneto-optical effect and imaging of magnetic octupole domains in a Weyl antiferromagnet (2018)
  • Author(s): T. Higo
  • Organizer: Physics and Applications of Spin-related Phenomena in Semiconductors 2018
  • Int'l Joint Research / Invited
• [Presentation] Large spontaneous responses at room temperature in the Weyl antiferromagnet Mn3Sn for topological antiferromagnetic spintronics (2018)
  • Author(s): T. Higo
  • Organizer: Topological Aspects of Quantum Matter 2018
  • Int'l Joint Research / Invited
• [Presentation] Spin currents and spin conversion phenomena (2018)
  • Author(s): Y. Otani
  • Organizer: International Conference on Complex and Functional Materials
  • Int'l Joint Research / Invited
• [Presentation] Spin-charge conversion in metal/oxide interfaces and topological material (2018)
  • Author(s): K. Kondou
  • Organizer: One-Day Symposium on Spintronic Properties of Graphene and Related 2D Materials
  • Int'l Joint Research / Invited
• [Presentation] Spin conversion phenomena in spintronics (2018)
  • Author(s): Y. Otani
  • Organizer: IEEE Magnetics Distinguished Lecturer 2018, Fudan University
• [Presentation] Large spontaneous responses in the Weyl antiferromagnet Mn3Sn for topological antiferromagnetic spintronics (2018)
  • Author(s): T. Higo
  • Organizer: One-Day Symposium on Spintronic Properties of Graphene and Related 2D Materials
  • Int'l Joint Research / Invited
• [Presentation] Spin conversion phenomena in spintronics (2018)
  • Author(s): Y. Otani
  • Organizer: IEEE Magnetics Distinguished Lecturer 2018, Colorado State University, NIST, MINT Center Univeristy of Alabama, MIT
• [Presentation] Spin conversion phenomena in spintronics (2018)
  • Author(s): Y. Otani
  • Organizer: IEEE Magnetics Distinguished Lecturer 2018, Beihang University, Institute of Physics Chinese Academy of Sciences
• [Presentation] Spin conversion phenomena in spintronics (2018)
  • Author(s): Y. Otani
  • Organizer: IEEE Magnetics Distinguished Lecturer 2018, Nanyang Technological University
• [Presentation] Spin conversion phenomena in spintronics (2018)
  • Author(s): Y. Otani
  • Organizer: IEEE Magnetics Distinguished Lecturer 2018, MILANO POLITECNICO, University of Perugia
• [Presentation] Spin conversion phenomena in spintronics (2018)
  • Author(s): Y. Otani
  • Organizer: 2nd International Conference of Magnetism and Materials
  • Int'l Joint Research / Invited
• [Presentation] Spin conversion phenomena in spintronics (2018)
  • Author(s): Y. Otani
  • Organizer: IEEE Magnetics Distinguished Lecturer 2018, Ins. of Physics Academia Sinica, National Taiwan University, National Tsing Hua University, National Chung Hsing University, National Cheng Kung University
• [Presentation] Efficient charge-spin conversion using surface state (2018)
  • Author(s): K. Kondou & Y. Otani
  • Organizer: XXVII International Materials Research Congress
  • Int'l Joint Research / Invited
• [Presentation] Characterization of coupling between mechanical angular momentum and electron spin (2018)
  • Author(s): M. Xu, J. Puebla, F. Auvray, B. Rana, K. Kondou & Y. Otani
  • Organizer: 23rd International Colloquium on Magnetic Films and Sufaces
  • Int'l Joint Research
• [Presentation] Spin conversion phenomena in spintronics (2018)
  • Author(s): Y. Otani
  • Organizer: IEEE Magnetics Distinguished Lecturer 2018, Stanford University, Western Digital Corporation
• [Presentation] Spin conversion phenomena in spintronics (2018)
  • Author(s): Y. Otani
  • Organizer: IEEE Magnetics Distinguished Lecturer 2018, Unite Mixte de Physique CNRS/Thales France, Technische Universitat Kaiserslauter
• [Presentation] Electric field controlled reconfigurable spin wave nanochannels and logic gates (2018)
  • Author(s): B. Rana & Y. Otani
  • Organizer: Sol-SkyMag 2018
  • Int'l Joint Research
• [Presentation] Efficient charge-spin interconversion phenomena in various nonmagnetic metal/oxide interfaces (2018)
  • Author(s): K. Kondou, H. Tsai & Y. Otani
  • Organizer: 5th International Conference of Asian Union of Magnetics Societies
  • Int'l Joint Research / Invited
• [Presentation] Spin conversion phenomena in spintronics (2018)
  • Author(s): Y. Otani
  • Organizer: IEEE Magnetics Society Summer School, Universidad San Francisco de Quito
• [Presentation] Spin conversion phenomena in spintronics (2018)
  • Author(s): Y. Otani
  • Organizer: IEEE Magnetics Distinguished Lecturer 2018, Institute of Physics, Tsinghua University, Institute of Semiconductors, Beijing Normal University, Beihang University, and Peking University
• [Presentation] Spin conversion phenomena in spintronics (2018)
  • Author(s): Y. Otani
  • Organizer: Magnetism 2018
  • Int'l Joint Research / Invited
• [Presentation] Spin conversion phenomena in spintronics (2018)
  • Author(s): Y. Otani
  • Organizer: IEEE Magnetics Distinguished Lecturer 2018, University of Cambridge, National Physical Laboratory, University of Leeds, University of York, and Univeristy of Bristol
• [Presentation] はじめに: なぜ今, 強結合スピントロニクスか？ (2018)
  • Author(s): 大谷 義近
  • Organizer: 日本物理学会 2018年秋季大会
• [Presentation] トポロジカル反強磁性スピントロニクス：ワイル反強磁性体Mn3Snにおける巨大な電気・熱・光応答 (2018)
  • Author(s): 肥後 友也
  • Organizer: 日本磁気学会 第81回 ナノマグネティクス専門研究会
  • Invited
• [Presentation] スピントロニクスにおけるスピン変換現象 (2018)
  • Author(s): 大谷 義近
  • Organizer: ImPACT 佐橋プログラム 公開成果報告会
  • Invited
• [Presentation] 金属/酸化物界面を用いたスピン流生成および検出 (2018)
  • Author(s): 近藤 浩太, H. Tsai, J. Puebla, 大谷 義近
  • Organizer: 日本磁気学会 第80回ナノマグネティックス専門研究会
  • Invited