Publication/Presentation

主要論文/Selected papers

  1. Koichi Oyanagi, Saburo Takahashi, Ludo J. Cornelissen, Juan Shan, Shyunsuke Daimon, Gerrit E. W. Bauer, Bart J. van Wees, and Eiji Saitoh,
    “Spin transport in insulators without exchange stiffness”
    Nature Communications 10, 4740 (2019).
    常磁性絶縁体中を長距離に伝搬スピン流を発見した。
    Optonics online 「東北大ら，常磁性絶縁体でスピン流を観測」
    fabcross for エンジニア 「スピン流を長距離かつ高効率に輸送できる新たな材料を発見 東北大ら」

  2. Koichi Oyanagi, Juan M. Gomez-Perez, Xian-Peng Zhang, Takashi Kikkawa, Yao Chen, Edurne Sagasta, Andrey Chuvilin, Luis E. Hueso, Vitaly N. Golovach, F. Sebastian Bergeret, Fèlix Casanova, and Eiji Saitoh,
    “Paramagnetic spin Hall magnetoresistance”
    Physical Review B 104, 134428 (2021).
    常磁性絶縁体においてスピンホール磁気抵抗効果が現れることを明らかにした。

  3. Koichi Oyanagi, Saburo Takahashi, Takashi Kikkawa, and Eiji Saitoh,
    “Mechanism of paramagnetic spin Seebeck effect”
    Physical Review B 107, 014423 (2023).
    常磁性絶縁体で発現するスピンゼーベック効果について理論的・実験的に研究を行った。

  4. Ludo J. Cornelissen*, Koichi Oyanagi*, Takashi Kikkawa, Z Qiu, Timo Kuschel, Gerrit E. W. Bauer, Bart J. van Wees, and Eiji Saitoh,
    “Nonlocal magnon-polaron transport in yttrium iron garnet”
    Physical Review B 96, 104441 (2017).
    * These authors contributed equally to this work.
    マグノンとフォノンの混成粒子である”マグノン-ポーラロン”による長距離スピン伝搬を実証した。
    Physical Review B誌の注目論文に選定

原著論文/List of publications

  1. Y.-J. Seo, K.Harii, R. Takahashi, H. Chudo, K. Oyanagi, Z. Qiu, T. Ono, Y. Shiomi, and E. Saitoh,
    “Fabrication and magnetic control of Y3Fe5O12 cantilevers”
    Applied Physics Letters 110, 132409 (2017).
    arXiv: https://arxiv.org/abs/1703.07533

  2. L. J. Cornelissen*, K. Oyanagi*, T. Kikkawa, Z. Qiu, T. Kuschel, G. E. W. Bauer, B. J. van Wees, and E. Saitoh,
    “Nonlocal magnon-polaron transport in yttrium iron garnet”
    Physical Review B 96, 104441 (2017).　[Editors’ suggestion]
    *These authors contributed equally to this work.
    arXiv: https://arxiv.org/abs/1706.04373

  3. R. Itoh, R. Iguchi, S. Daimon, K. Oyanagi, K. Uchida, E. Saitoh,
    “Magnetic-field-induced decrease of the spin Peltier effect in Pt/ Y3Fe5O12 system at room temperature”
    Physical Review B 96, 184441 (2017).
    arXIv: https://arxiv.org/abs/1709.08997

  4. D. Hirobe, T. Kawamata, K. Oyanagi, Y. Koike, E. Saitoh,
    “Generation of spin currents from one-dimensional quantum spin liquid”
    Journal of Applied Physics 123, 123903 (2018). [Featured Article]
    Selected as AIP Scilight.

  5. H. Arisawa, S. Daimon, Y. Oikawa, Y.-J. Seo, K. Harii, K. Oyanagi, and E. Saitoh,
    “Magnetomechanical sensing based on delta-E effect in Y3Fe5O12 micro bridge”
    Applied Physics Letters 114, 122402 (2019).

  6. K. Harii*, Y.-J. Seo*, Y. Tsutsumi, H. Chudo, K. Oyanagi, M. Matsuo, Y. Shiomi, Y. Ono, S. Maekawa, and E. Saitoh,
    “Spin Seebeck mechanical force”
    Nature Communications 10, 2616 (2019).
    *These authors contributed equally to this work.

  7. K. Oyanagi*, S. Takahashi, L. J. Cornelissen, J. Shan, S. Daimon, T. Kikkawa, G. E. W. Bauer, B. J. van Wees, and E. Saitoh,
    “Spin transport in insulators without exchange stiffness”
    Nature Communications 10, 4740, (2019).
    *Corresponding author

  8. R. Yahiro, T. Kikkawa, R. Ramos, K. Oyanagi, T. Hioki, S. Daimon, and E. Saitoh,
    “Magnon polarons in the spin Peltier effect”
    Physical Review B 110, 024407 (2020).
    arXiv: https://arxiv.org/abs/1912.11573

  9. K. Oyanagi*, T. Kikkawa, and E. Saitoh,
    “Magnetic field dependence of the nonlocal spin Seebeck effect in Pt/YIG/Pt system at low temperature”
    AIP Advances 10, 015031 (2020). [Featured article]
    Selected as AIP Scilight., and the cover of AIP Advances.
    *Corresponding author

  10. J. M. Gomez-Perez, K. Oyanagi, R. Yahiro, R. Ramos, L. E. Hueso, E. Saitoh, and F. Casanova,
    “Absence of evidence of spin transport through amorphous Y3Fe5O12“
    Applied Physics Letters 116, 032401 (2020).
    arXiv: https://arxiv.org/abs/1911.06061

  11. R. Ramos, T. Makiuchi, T. Kikkawa, S. Daimon, K. Oyanagi, and E. Saitoh,
    “Observation of quantum interference conductance fluctuations in metal rings with strong spin-orbit coupling”
    Applied Physics Letters 117, 242402 (2020).
    arXiv: https://arxiv.org/abs/2010.01300

  12. T. Kikkawa, D. Reitz, H. Ito, T. Makiuchi, T. Sugimoto, K. Tsunekawa, S. Daimon, K. Oyanagi, R. Ramos, S. Takahashi, Y. Shiomi, Y. Tserkovnyak, and E. Saitoh,
    “Observation of nuclear-spin Seebeck effect”
    Nature Communications 12, 4356 (2021).
    プレスリリース「世界初の核の自転を利用した熱発電 － 熱エネルギー利用技術・スピントロニクスに新たな可能性 －」
    https://www.iwate-u.ac.jp/cat-research/2021/07/004262.html

  13. Y. Chen, M. Sato, Y. Tang, Y. Shiomi, K. Oyanagi, T. Masuda, Y. Nambu, M. Fujita, and E. Saitoh,
    “Triplon current generation in solids”
    Nature Communications 12, 5199 (2021).
    プレスリリース「トリプロンがスピン流を伝搬することを実証－ 極小スピン回路などでの活用に期待」
    https://www.iwate-u.ac.jp/cat-research/2021/08/004331.html

  14. K. Oyanagi*, J. M. Gomez-Perez, X.-P. Zhang, T. Kikkawa, Y. Chen, E. Sagasta, A. Chuvilin, L. E. Hueso, V. N. Golovach, F. S. Bergeret, F. Casanova*, and E. Saitoh,
    “Paramagnetic spin Hall magnetoresistance”
    Physical Review B 104, 134428 (2021).
    arXiv: https://arxiv.org/abs/2008.02446
    *Corresponding authors

  15. S. Daimon, K. Tsunekawa, S. Kawakami, T. Kikkawa, R. Ramos, K. Oyanagi, T. Ohtsuki, and E. Saitoh,
    “Deciphering quantum fingerprints in electric conductance”
    Nature Communications 13, 3160 (2022).

  16. R. Nagasawa, K. Oyanagi*, T. Hirai, R. Modak, S. Kobayashi, and K. Uchida*, 
    “Anomalous Ettingshausen effect in iron-carbon alloys”
    Applied Physics Letters 121, 062401 (2022).
    arXiv: https://arxiv.org/abs/2206.07322
    *Corresponding authors

  17. T. Kikkawa, K. Oyanagi, T. Hioki, M. Ishida, Z. Qiu, R. Ramos, Y. Hashimoto, and E. Saitoh,
    “Composition-tunable magnon-polaron anomalies in spin Seebeck effects in epitaxial BixY3-xFe5O12 films”
    Physical Review Materials 6, 104402 (2022). [Editors’ suggestion]
    DOI: https://doi.org/10.1103/PhysRevMaterials.6.104402
    arXiv: https://arxiv.org/abs/2210.03346

  18. K. Oyanagi*, S. Takahashi, T. Kikkawa, and E. Saitoh,
    “Mechanism of paramagnetic spin Seebeck effect”
    Physical Review B 107, 014423 (2023).
    DOI: https://doi.org/10.1103/PhysRevB.107.014423
    arXiv: https://arxiv.org/abs/2208.03857
    *Corresponding author

  19. A. Kawamura, M. Saijyo, B. Bayarkhuu, N. Nishidate, I. Oikawa, S. Kobayashi, K. Oyanagi, Y. Shiba, T. Tsukamoto, Y. Oishi, and Y. Shibasaki 
    “Fabrication of hyperbranched-polyglycidol-Fe3O4 nanocomposite labeled with fluorescein isothiocyanate via rapid ligand exchange reaction”
    Polymer 294, 126724 (2024).
    DOI: https://doi.org/10.1016/j.polymer.2024.126724

  20. R. Modak, T. Hirai, Y. Sakuraba, S. Mitani, K. Oyanagi, T. Yamazaki, and T. Seki, K. Uchida,
    “High-Throughput Optimization of Magnetoresistance Materials Based on Lock-In Thermography”
    Advanced Physics Research 3, 2400021 (2024).
    DOI: https://doi.org/10.1002/apxr.202400021

招待講演/Invited talk

  1. 大柳 洸一
    “Nonlocal measurement in garnets”
    平成２９年度スピン変換科学研究会, 2017年9月17日, 大阪

  2. Koichi Oyanagi
    “Nonlocal spin transport in insulator garnets”
    Tohoku University GP-Spin seminar 2019, Sendai, Japan, Marth 1, 2019.

  3. K. Oyanagi, T. Kikkawa, and E. Saitoh,
    “Paramagnetic spintronics”
    17th RIEC International Workshop on Spintronics and 10th JSPS Core-to-Core Workshop on “New-Concept Spintronics Devices”, Sendai, Japan December, 3-6 2019.

  4. K. Oyanagi, S. Takahashi, L. J. Cornelissen, J. Shan, S. Daimon, T. Kikkawa, G. E. W. Bauer, B. J. van Wees, E. Saitoh
    “Spin Transport in Paramagnetic Insulators”
    The 3rd Symposium for The Core Research Clusters for Materials Science and Spintronics, Sendai, Japan, Februraly 10-11 2020.

  5. K. Oyanagi
    “Paramagnetic Spintonics”
    18th International Conference on X-Ray Absorption Fine Structure, Sydony, Australia/HYBRID, July 10-15 2022.

  6. K. Oyanagi,
    “Spin current generation in paramagnetic insulators”
    REIMEI Workshop: Physics of Advanced Functional Materials (Tokai, Japan), October 9-10, 2024.

国際会議発表/International Conference

口頭発表/Oral presentation

  1. K. Oyanagi, R.Iguchi, Z. Qiu, and E. Saitoh,
    “Temperature dependence of magnon spin diffusion length determined by non-local magnon transport experiment”
    Tohoku University and University of York Joint Seminar “Prospect of Future Spintronics~ from physics to devices ~” (Sendai, Japan), August 29-30, 2016.

  2. K. Oyanagi, L. J. Cornelissen, T. Kikkawa, Z. Qiu, T. Kuschel, G. E. W. Bauer, B. J. van Wees, and E. Saitoh,
    “Transport property of magnon-polarons in the nonlocal spin Seebeck effect”
    York-Tohoku Summer School in Spintronics (York, UK), July 26-28, 2017.

  3. K. Oyanagi, L. J. Cornelissen, T. Kikkawa, Z. Qiu, T. Kuschel, G. E. W. Bauer, B. J. van Wees, and E. Saitoh,
    “Phonon anomaly in the nonlocal spin Seebeck effect”
    APS March Meeting 2018 (Los Angeles, USA) (S22.00002), March 8, 2018.

  4. K. Oyanagi, S. Takahashi, L. J. Cornelissen, J. Shan, S. Daimon, T. Kikkawa, G. E. W. Bauer, B. J. van Wees, E. Saitoh,
    “Efficient spin transport in paramagnetic insulators”
    Spin caloritronics X, (Groningen, the Netherland), May 20-24, 2019.

  5. K. Oyanagi, S. Takahashi, L. J. Cornelissen, J. Shan, S. Daimon, T. Kikkawa, G. E. W. Bauer, B. J. van Wees,and E. Saitoh,
    “Long-range spin transport in paramagnetic insulators”
    Spin Peru, (Ollantaytambo, Peru), October 20-25, 2019.

  6. K. Oyanagi,
    “Spin current transport in normal metal/paramagnetic insulator interface”
    Iwate Spintronics School, 2024 winter, (Shizukuishi, Japan), Februrary 20-22, 2024.

  7. K. Oyanagi,
    “Magnetism and Spintronics”
    Interdisciplinary Exchange Workshop for Future of Thailand and Japan 2024 in Bangkok (IEWF-TJ in Bangkok), (Bangkok, Thailand), May 14, 2024.

  8. K. Oyanagi,
    “Spintronics and thermoelectric effect”
    Interdisciplinary Exchange Workshop for Future of Thailand and Japan (IEWF-TJ) in Chiang Mai 2024), (Chaing Mai, Thailand), May 16, 17, 2024.

ポスター発表/Poster presentation

  1. K. Oyanagi, R.Iguchi, T. Niizeki, Y. Shiomi, K. Uchida, and E. Saitoh,
    “Effect of interfacial treatment on spin transport in nonlocal spin valve on magnetic insulator” (poster)
    Summit of Materials Science 2016 (Sendai, Japan), November 29, 2016.

  2. K. Oyanagi, L. J. Cornelissen, T. Kikkawa, Z. Qiu, T. Kuschel, G. E. W. Bauer, B. J. van Wees, and E. Saitoh,
    “Nonlocal magnon-polaron transport in yttrium iron garnet” (poster)
    Gordon Research Seminar on Spin Dynamics in Nanostructures (Les Diablerets, Switzerland), July 15-16, 2017.

  3. K. Oyanagi, L. J. Cornelissen, T. Kikkawa, Z. Qiu, T. Kuschel, G. E. W. Bauer, B. J. van Wees, and E. Saitoh,
    “Nonlocal magnon-polaron transport in yttrium iron garnet” (poster)
    Gordon Research Conference on Spin Dynamics in Nanostructures (Les Diablerets, Switzerland), July 16-21, 2017.

  4. K. Oyanagi, L. J. Cornelissen, T. Kikkawa, Z. Qiu, T. Kuschel, G. E. W. Bauer, B. J. van Wees, and E. Saitoh,
    “Transport property of magnon-polarons in the nonlocal spin Seebeck effect” (Poster)
    2017 Tohoku University – Lorraine-Mainz-Tohoku Joint Seminar” Prospect of Future Spintronics ~from physics to devices~” (Sendai, Japan), October 31- November 2, 2017.

  5. K. Oyanagi, L. J. Cornelissen, T. Kikkawa, Z. Qiu, T. Kuschel, G. E. W. Bauer, B. J. van Wees, and E. Saitoh,
    “Magnon-polaron transport in the nonlocal spin Seebeck effect” (poster)
    Reimei/GP-Spin/ICC-IMR International Workshop “New Excitations in Spintronics” (Sendai, Japan), January 10-14, 2018.

  6. K. Oyanagi, L. J. Cornelissen, T. Kikkawa, Z. Qiu, T. Kuschel, G. E. W. Bauer, B. J. van Wees, and E. Saitoh,
    “Magnon-Polarons in the nonlocal spin Seebeck effect” (poster)
    the 7th Core-to-Core Tohoku-York-Kaiserslautern Workshop “New concept spintronic devices” (Kaiserslautern, Germany)(P15), May 28-30, 2018.

  7. K. Oyanagi, S. Takahashi, L. J. Cornelissen, J. Shan, S. Daimon, T. Kikkawa, G. E. W. Bauer, B. J. van Wees, E. Saitoh,
    “Observation of efficient spin transport in a paramagnetic insulator” (poster)
    One-Day Symposium on Spintronics Properties of Graphene and Related 2D Materials (Chiba, Japan), November 22, 2018.

  8. K. Oyanagi, L. J. Cornelissen, T. Kikkawa, Z. Qiu, T. Kuschel, G. E. W. Bauer, B. J. van Wees, and E. Saitoh,
    “Magnon-Polarons in the nonlocal spin Seebeck effect” (poster)
    The 2nd Symposium for World Leading Research Centers -Materials Science and Spintronics- jointly organized with AMIS 2019, February 16-18, 2019.

  9. K. Oyanagi, S. Takahashi, L. J. Cornelissen, J. Shan, S. Daimon, T. Kikkawa, G. E. W. Bauer, B. J. van Wees, E. Saitoh,
    “Observation of efficient spin transport in a paramagnetic insulator” (poster)
    Spin Mechanics 6, (Zao, Japan), February 26-28, 2019.

  10. K. Oyanagi, T. Kikkawa, and E. Saitoh
    “Paramagnetic Spintronics”
    New Perspective in Spin Conversion Science (NPSCS2020), Kashiwa, Japan, February 3-4, 2020.
    Selected as the best poster award.

  11. K. Oyanagi, T. Kikkawa, and E. Saitoh
    “Paramagnetic Spintronics”
    The 4th Internatinal Symposium for The Core Research Cluster for Spintronics (Sendai, Japan), February 24-25, 2021.

  12. K. Takamori, K. Oyanagi, T. Imamura, R. Nagasawa, K. Mahalingam, T. Hirai, F. Ando, Yuya Sakuraba, S. Kobayashi, K. Uchida
    “Anomalous Nernst effect in sintered Co2MnGa slab”
    Spin Caloritronics XII (Tsukuba, Japan), May 22-25, 2023.

国内学会発表/Domestic Conference

口頭発表/Oral presentation

  1. 大柳洸一, L. J. Cornelissen, 吉川貴史, Z. Qiu, T. Kuschel, G. E. W. Bauer, B. J. van Wees, 齊藤英治
    “Magnon-poralon transport in the nonlocal spin Seebeck effect”
    第78回応用物理学会秋季学術講演会, 7a-C18-6, 2017

  2. 大柳洸一, L. J. Cornelissen, 吉川貴史, Z. Qiu, T. Kuschel, G. E. W. Bauer, B. J. van Wees, 齊藤英治
    “非局所スピンゼーベック効果におけるフォノン異常の観測”
    日本物理学会2017年秋季大会, 24aE31-1, 2017

  3. 大柳洸一, 高橋三郎, L. J. Cornelissen, J. Shan, 大門俊介, 吉川貴史, G. E. W. Bauer, B. J. van Wees, 齊藤英治
    “常磁性絶縁体におけるスピン流輸送現象の観測”
    日本物理学会第 73 回年次大会, 24pK304-4, 2018

  4. 大柳洸一, 高橋三郎, L. J. Cornelissen, J. Shan, 大門俊介, 吉川貴史, G. E. W. Bauer, B. J. van Wees, 齊藤英治
    “常磁性絶縁体におけるスピン流輸送現象の磁場依存性”
    日本物理学会2018年秋季大会, 11aC116-1, 2018

  5. 大柳洸一, Juan M. Gomez-Perez, Xiang P. Zhang, Edurne Sagasta, Vitaly N. Golovach, F. Sebastian Bergeret, Felix Casanova, 齊藤英治
    “常磁性絶縁体/金属接合におけるスピンホール磁気抵抗効果の観測”
    日本物理学会2019年秋季大会, 12aD10-7, 2019

  6. K. Takamori , K. Oyanagi , T. Imamura , R. Nagasawa , K. Mahalingam , T. Hirai , S. Kobayashi , K. Uchida
    “Transverse magneto-thermoelectric conversion in sintered Co2MnGa slab”
    第70回応用物理学会春季講演会, 15p-D704-3, 2023

ポスター発表/Poster presentation

  1. 大柳洸一, 井口亮, 新関智彦, 塩見雄毅, 吉川貴史, 内田健一, 齊藤英治
    “磁性絶縁体/金属界面を有する金属ナノ細線構造におけるスピン輸送特性の評価”
    日本物理学会第72回年次大会, 19pPSB-34, 2016

  2. 大柳洸一, 井口亮, 邱志勇, 齊藤英治
    “非局所配置におけるマグノン拡散長の温度依存性”
    第77回応用物理学会秋季学術講演会, 13p-P8-4, 2016

  3. 大柳洸一, 高橋三郎, L. J. Cornelissen, J. Shan, 大門俊介, 吉川貴史, G. E. W. Bauer, B. J. van Wees, 齊藤英治
    “Phonon anomaly in the nonlocal spin Seebeck effect”
    第11回物性科学領域横断研究会, 2017
    優秀ポスター賞受賞

  4. 大柳洸一, 高橋三郎, L. J. Cornelissen, J. Shan, 大門俊介, 吉川貴史, G. E. W. Bauer, B. J. van Wees, 齊藤英治
    “Phonon anomaly in the nonlocal spin Seebeck effect”
    第133回東北大学金属材料研究所講演会, 2017
    最優秀ポスター賞受賞

  5. K. Oyanagi, L. J. Cornelissen, T. Kikkawa, Z. Qiu, T. Kuschel, G. E. W. Bauer, B. J. van Wees, and E. Saitoh
    “Phonon anomaly in the nonlocal spin Seebeck effect”
    平成29年度スピン変換年次報告会, 2018