Publications
Publications
see also Google Scholar and ORCiD
Kosuke Fujiwara and Takahiro Morimoto
"Interaction-induced nonlinear magnon transport in noncentrosymmetric magnets"
Phys. Rev. B 111, 014408 (2025) (https://arxiv.org/abs/2404.03260)
Makiko Ogino, Yoshihiro Okamura, Kosuke Fujiwara, Takahiro Morimoto, Naoto Nagaosa, Yoshio Kaneko, Yoshinori Tokura, and Youtarou Takahashi
"Terahertz photon to dc current conversion via magnetic excitations of multiferroics"
Kosuke Fujiwara, Sota Kitamura, and Takahiro Morimoto
“Nonlinear spin current of photoexcited magnons in collinear antiferromagnets”
Phys. Rev. B 107, 064403 (2023) [Selected as Editors’ Suggestion] (https://arxiv.org/abs/2210.17099)
Kosuke Fujiwara, Sota Kitamura, and Takahiro Morimoto
“Thermal Hall responses in frustrated honeycomb spin systems”
Phys. Rev. B 106, 035113 (2022) (https://arxiv.org/abs/2203.16853)
International Conferences (Oral Presentations)
K. Fujiwara, S. Kitamura, and T. Morimoto
“Nonlinear magnon spin currents induced by the electric field in noncentrosymmetric spin systems”
Trends in Magnetism 2023 (TMAG2023), Rome, Italy, September 2023.
K. Fujiwara, S. Kitamura, and T. Morimoto
“The theory of nonlinear magnon spin current induced by the electric field”
APS March Meeting 2023, Las Vegas, March 2023
K. Fujiwara, S. Kitamura, and T. Morimoto
“Thermal Hall responses in frustrated honeycomb spin systems”
APS March Meeting 2022, Chicago (online), March 2022
International Conferences (Poster Presentations)
K. Fujiwara and T. Morimoto,
“Magnon-magnon interaction induced nonlinear responses in noncentrosymmetric magnets” Current trends in nonlinear photocurrents and magnetism, San Sebastian, Spain, May 2025.
K. Fujiwara and T. Morimoto,
“Nonlinear responses of magnon induced by the magnon-magnon interaction” International Conference on Magnetism, Bologna, Italy, July 2024.
K. Fujiwara, S. Kitamura, and T. Morimoto
“Thermal Hall responses in frustrated 𝐽1 − 𝐽2 − 𝐽2' honeycomb model”
29th International Conference on Low Temperature Physics, Sapporo, August 2022
K. Fujiwara, S. Kitamura, and T. Morimoto
“Magnon spin shift current in noncentrosymmetric magnets”
Novel Quantum States in Condensed Matter 2022, Kyoto, November 2022
Domestic Conferences (Oral Presentations)
K. Fujiwara and T. Morimoto,
"マグノン相互作用に誘起される非相反マグノン応答の研究”
⽇本物理学会2024年秋季⼤会, 北⼤, 2024年9⽉
K. Fujiwara, S. Kitamura, and T. Morimoto,
"反強磁性絶縁体における光誘起マグノンスピンシフト電流の研究"
⽇本物理学会2023年秋季⼤会, 東北⼤, 2023年9⽉
K. Fujiwara, S. Kitamura, and T. Morimoto,
“フラストレーションのあるハニカム格⼦におけるマグノンの熱ホール効果”
⽇本物理学会2022年秋季⼤会, 東⼯⼤, 2022年9⽉
K. Fujiwara, S. Kitamura, and T. Morimoto,
"𝐽1 − 𝐽2 − 𝐽2' ハニカムモデルにおけるマグノンの熱ホール効果”
第67回物性若⼿夏の学校分科会⼝頭発表, オンライン, 2022年8⽉
K. Fujiwara, S. Kitamura, and T. Morimoto,
"反強磁性体におけるマグノンの熱ホール効果”
第66回物性若⼿夏の学校分科会⼝頭発表, オンライン, 2021年8⽉
Seminars
K. Fujiwara
マグノンの非線形応答に対するマグノンバンドの幾何学、相互作用の影響に関する理論的研究, Tohoku Univ. @Sendai, Mar. 2024
Seminars (informal)
K. Fujiwara
"Nonlinear responses of magnons related to the magnon band geometry and the interaction", Alexander Mook Group, Johannes Gutenberg University Mainz @Mainz, Feb. 2024
K. Fujiwara
"Theory of nonlinear magnon spin currents induced by the electric field in noncentrosymmetricspin systems"
PSI @ Zurich, Oct. 2023
K. Fujiwara
"Theory of nonlinear spin currents in inversion broken antiferromagnets"
Titus Neupert group (University of Zurich) @ Zurich, Oct. 2023
K. Fujiwara
"Theory of geometrical magnon currents in antiferromagnets"
Koshino group seminar (Osaka Univ.) @ Osaka, Dec. 2022