Study of magnetic-field induced spin dynamics using the terahertz FT-ESR spectroscopy

• Project/Area Number: 15H03690
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Condensed matter physics II
• Research Institution: Kobe University
• Principal Investigator: KOHMOTO Toshiro 神戸大学, 理学研究科, 教授 (70192573)
• Research Collaborator: MORIYASU Takeshi 神戸大学, 理学研究科, 学術研究員
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000); Fiscal Year 2017: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000); Fiscal Year 2016: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000); Fiscal Year 2015: ¥11,570,000 (Direct Cost: ¥8,900,000、Indirect Cost: ¥2,670,000)
• Keywords: テラヘルツ / 磁気共鳴 / 磁性

Outline of Final Research Achievements

We developed a terahertz Fourier-transform electron-spin-resonance (FT-ESR) spectrometer system using a broadband terahertz pulse source generated by femtosecond optical pulses and air plasma, a superconducting magnet, and a temperature-controlled refrigerator. We applied it to study the spin and magnon dynamics in transition-metal complex, antiferromagnets, magnetelctric materials, and a multiferroics.

Research Products

• [Journal Article] Observation of Ultrafast Magnon Dynamics in Antiferromagnetic Nickel Oxide by Optical Pump-Probe and Terahertz Time-Domain Spectroscopies (2018)
  • Author(s): T. Kohmoto, T. Moriyasu, S. Wakabayashi, H. Jinn, M. Takahara, and K. Kakita
  • Journal Title: J. Infrared Milli. Terahz. Waves Volume: 39 Issue: 1 Pages: 77-92
  • DOI: 10.1007/s10762-017-0442-6
  • Peer Reviewed
• [Journal Article] 光励起したシリコンにおけるテラヘルツパルスの伝播 (2017)
  • Author(s): 守安毅，笹島秀樹，河本敏郎，北原英明，谷正彦，熊倉光孝
  • Journal Title: 電子情報通信学会技術研究報告 Volume: 117 Pages: 45-48
• [Journal Article] Magnetic-field dependence of the coherent magnons in an antiferromagnet NiO (2017)
  • Author(s): K. Kawamoto, M. Tatematsu, and T. Kohmoto
  • Journal Title: Proc. 9th International School and Conference on Spintronics and Quantum Information Technology Volume: 9 Pages: 211-211
  • NAID: 130006709413
• [Journal Article] 反強磁性体Cr2O3における電場誘起磁化のダイナミクス (2017)
  • Author(s): 疋田崚，谷口弘樹，河本敏郎
  • Journal Title: 光物性研究会論文集 Volume: 28 Pages: 151-154
  • NAID: 130006709421
• [Journal Article] YIGにおける電場誘起磁化 (2017)
  • Author(s): 蓮沼貴史，藤本恵輔，河本敏郎
  • Journal Title: 光物性研究会論文集 Volume: 28 Pages: 291-294
  • NAID: 130007646463
• [Journal Article] Pump-Probe法によるNiOにおける反強磁性共鳴の磁場依存性の測定 (2016)
  • Author(s): 立松雅大，川本憲生，河本敏郎
  • Journal Title: 光物性研究会論文集 Volume: 27 Pages: 271-274
• [Journal Article] テラヘルツ時間領域分光による反強磁性体の磁気秩序と内部エネルギーの温度依存性の測定 (2016)
  • Author(s): 守安毅，河本敏郎
  • Journal Title: 光アライアンス Volume: 27 Pages: 49-53
  • NAID: 40020986477
• [Journal Article] YIGにおける電場誘起磁化 (2016)
  • Author(s): 蓮沼貴史，河本敏郎
  • Journal Title: 光物性研究会論文集 Volume: 27 Pages: 115-118
  • NAID: 130007646463
• [Journal Article] 反強磁性体Cr2O3における電場誘起磁化のダイナミクス (2016)
  • Author(s): 新海貴大，疋田崚，守安毅，河本敏郎
  • Journal Title: 光物性研究会論文集 Volume: 27 Pages: 111-114
  • NAID: 130006709421
• [Journal Article] テラヘルツ時間領域分光法によるCoOの内部エネルギー温度依存性の測定 (2015)
  • Author(s): 立松雅大，守安毅，岸本秀隆，河本敏郎
  • Journal Title: 光物性研究会論文集 Volume: 26 Pages: 235-238
• [Presentation] Dynamics of the electric-field induced magnetization in antiferromagnetic chromium oxide observed by Faraday rotation (2018)
  • Author(s): H. Taniguchi, R. Hikita, and T. Kohmoto
  • Organizer: 12th Int. Conf. on Excitonic and Photonic Processes in Condensed Matter and Nano Materials
  • Int'l Joint Research
• [Presentation] Dynamics of the electric-field induced magnetization in YIG observed by Faraday rotation (2018)
  • Author(s): K. Fujimoto, T. Hasunuma, and T. Kohmoto
  • Organizer: 12th Int. Conf. on Excitonic and Photonic Processes in Condensed Matter and Nano Materials
  • Int'l Joint Research
• [Presentation] YIGにおける電場誘起磁化 (2017)
  • Author(s): 蓮沼貴史，河本敏郎
  • Organizer: 平成29年度日本分光学会年次講演会
• [Presentation] 反強磁性体NiOにおけるコヒーレントマグノンの磁場依存性 (2017)
  • Author(s): 川本憲生，立松雅大，河本敏郎
  • Organizer: 平成29年度日本分光学会年次講演会
• [Presentation] Dynamics of the electric-field induced magnetization in antiferromagnetic chromium oxide: Faraday rotation measurement (2017)
  • Author(s): R. Hikita, T. Shinkai, and T. Kohmoto
  • Organizer: 9th International School and Conference on Spintronics and Quantum Information Technology
  • Int'l Joint Research
• [Presentation] Dynamics of the electric-field induced magnetization in YIG observed by Faraday rotation (2017)
  • Author(s): T. Hasunuma and T. Kohmoto
  • Organizer: 9th International School and Conference on Spintronics and Quantum Information Technology
  • Int'l Joint Research
• [Presentation] 酸化物磁性体における電場誘起磁化のダイナミクス (2017)
  • Author(s): 河本敏郎
  • Organizer: 第５回豊田理研ワークショップ「スピン秩序の動的光制御」
  • Invited
• [Presentation] 反強磁性体酸化クロムにおける電場誘起磁化のダイナミクス (2017)
  • Author(s): 疋田崚，谷口弘樹，河本敏郎
  • Organizer: 第22回スピン工学の基礎と応用
• [Presentation] YIGにおける電場誘起磁化 (2017)
  • Author(s): 藤本恵輔，蓮沼貴史，河本敏郎
  • Organizer: 日本物理学会第73回年次大会
• [Presentation] 反強磁性体酸化クロムにおける電場誘起磁化のダイナミクス (2017)
  • Author(s): 谷口弘樹，疋田崚，河本敏郎
  • Organizer: 日本物理学会第73回年次大会
• [Presentation] Observation of ultrafast spin dynamics in antiferromagnetic transition metal oxides by pump-probe and terahertz spectroscopies (2017)
  • Author(s): T. Kohmoto and T. Moriyasu
  • Organizer: Molecular Photoscience Research Center Int. Symp. on Recent Advances in Terahertz Molecular Science
  • Place of Presentation: Kobe (Japan)
  • Int'l Joint Research / Invited
• [Presentation] 反強磁性体NiOにおけるコヒーレントマグノンの磁場依存性 (2017)
  • Author(s): 立松雅大, 川本憲生, 河本敏郎
  • Organizer: 日本物理学会第72回年次大会
  • Place of Presentation: 大阪大学（大阪府・豊中市）
• [Presentation] 反強磁性体Cr2O3における電場誘起磁化 (2016)
  • Author(s): 新海貴大，鈴木崇平，守安毅，河本敏郎
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北学院大学 (宮城県・仙台市)
  • Year and Date: 2016-03-21
• [Presentation] テラヘルツ時間領域分光によるCoOの内部エネルギー温度依存性の測定 (2016)
  • Author(s): 立松雅大，守安毅，岸本秀隆，河本敏郎
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北学院大学 (宮城県・仙台市)
  • Year and Date: 2016-03-21
• [Presentation] Lattice and Magnetostrictive Contributions to the Internal Energy in Cobalt Oxide Observed by THz-TDS (2016)
  • Author(s): M. Tatematsu, T. Moriyasu, H. Kishimoto, and T. Kohmoto
  • Organizer: Int. Conf. on Low-Energy Electrodynamics in Solids
  • Place of Presentation: Moriyama (Japan)
  • Int'l Joint Research
• [Presentation] Critical Behavior of Relaxational Lattice Modes in Multiferroic Cupric Oxide (2016)
  • Author(s): T. Kohmoto, Y. Sawada, X. Zheng, and T. Moriyasu
  • Organizer: 20th Int. Conf. on Ultrafast Phenomena
  • Place of Presentation: Santa Fe (USA)
  • Int'l Joint Research
• [Presentation] Internal Energy in Cobalt Oxide Observed by THz-TDS (2016)
  • Author(s): M. Tatematsu, T. Moriyasu, and T. Kohmoto
  • Organizer: 9th International Conference on Physics and Applications of Spin-Related Phenomena in Solids
  • Place of Presentation: Kobe (Japan)
  • Int'l Joint Research
• [Presentation] Spin dynamics in transition metal oxides observed by pump-probe and terahertz spectroscopies (2015)
  • Author(s): T. Kohmoto
  • Organizer: Mini-Symp. on Application of THz Spectroscopy on Condensed Phases
  • Place of Presentation: 神戸大学 (兵庫県・神戸市)
  • Year and Date: 2015-09-29
  • Int'l Joint Research / Invited
• [Presentation] THz-TDSを用いた結晶における内部エネルギーの温度依存性測定 (2015)
  • Author(s): 立松雅大，澤田幸宏，守安 毅，河本敏郎
  • Organizer: 日本分光学会年次講演会
  • Place of Presentation: 東京工業大学 (東京都・目黒区)
  • Year and Date: 2015-06-03
• [Book] “The Observation of Ultrafast Magnon Dynamics in Antiferromagnets NiO and MnO by Pump-Probe and Terahertz Time-Domain Spectroscopies”, in Advances in Materials Science Research 28, edited by M. C. Wythers (2017)
  • Author(s): T. Moriyasu and T. Kohmoto
  • Total Pages: 24
  • Publisher: Nova Science