Publications

Publications

11.  "Topological spin-orbit torque  in ferrimagnetic Weyl semimetal"

         Tomonari Meguro,  Akihiro Ozawa, Koji Kobayashi, Yasufumi Araki, and Kentaro Nomura, Phys. Rev. Research 7, L022065 (2025) [ arXiv:2409.07106 ]

10.  "Intrinsic spin Nernst effect in topological Dirac and magnetic Weyl semimetals"  

          Taiki Matsushita, Akihiro Ozawa, Yasufumi Araki, Junji Fujimoto, and Masatoshi Sato Phys. Rev. B, 111,245131 (2025), [arXiv]. 

9.  "Light-induced anomalous Hall conductivity in the massive three-dimensional Dirac semimetal"             

          Naotaka Yoshikawa*, Shun Okumura*, Yoshua Hirai, Kazuma Ogawa, Kohei Fujiwara, Junya Ikeda, Akihiro Ozawa, 

          Takashi Koretsune, Ryotaro Arita, Aditi Mitra, Atsushi Tsukazaki, Takashi Oka, and Ryo Shimano, Phys.Rev. B. 111, 245104 (2025) Editors' suggestion

          *Equal contribution

                  Collaborative work with experimental groups

8.   "Chiral gauge field in fully spin-polarized magnetic Weyl semimetal with magnetic domain walls "  Editors' Choice

         Akihiro Ozawa, Yasufumi Araki, and Kentaro Nomura J. Phys. Soc. Jpn 93, 094704 (2024) [arXiv]

                       Pick up for JPS Hot Topics  "Chiral Gauge Field and Topological Magnetoelectric Response in Fully Spin-Polarized Magnetic Weyl semimetal Co3Sn2S2"

                        日本物理学会誌「磁性ワイル半金属におけるカイラルゲージ場とトポロジカル電磁応答」

7.  "Effective tight-binding model of compensated ferrimagnetic Weyl semimetal with spontaneous orbital magnetization"  

         Tomonari Meguro, Akihiro Ozawa, Koji Kobayashi, and Kentaro Nomura  J. Phys. Soc. Jpn. 93 (3), 034703 (2024)  [ arXiv] 

6. "Effective model analysis for intrinsic spin Hall effect with magnetism in the Stacked Kagome Weyl Semimetal  Co3Sn2S2"

        Akihiro Ozawa, Koji Kobayashi, and Kentaro Nomura Phys. Rev. Applied 21, 014041(2024) [arXiv]

5. "Intercorrelated anomalous Hall and spin Hall effect in kagome-lattice Co3Sn2S2-based shandite films"

          Yong-Chang Lau, Junya Ikeda, Kohei Fujiwara, Akihiro Ozawa, 

           Takeshi Seki, Kentaro Nomura, Atsushi Tsukazaki, Koki Takanashi, Phys. Rev. B 108, 064429 (2023) Editors' suggestion

                        Collaborative work with experimental groups

                    「 東北大、トポロジカル物質の潜在的に優れた特性を理論と実験で実証」  Tohoku univ press release

4. "Enhancement of Spin-Charge Conversion Efficiency for Co3Sn2S2 across Transition from Paramagnetic to Ferromagnetic Phase"

            Takeshi Seki, Yong-Chang Lau, Junya Ikeda, Kohei Fujiwara, Akihiro Ozawa, 

             Satoshi Iihama, Kentaro Nomura, Atsushi Tsukazaki, Phys. Rev. Research 5, 013222 (2023) [ arXiv]

                          Collaborative work with experimental groups

3. "Magnetic Orderings from Spin-Orbit Coupled Electrons on Kagome Lattice"  Editors' Choice

             Jin Watanabe, Yasufumi Araki, Koji Kobayashi, Akihiro Ozawa, and Kentaro Nomura J. Phys. Soc. Jpn. 91, 083702 (2022) [arXiv]

                        Pick up for JPS Hot Topics  "Spin-Orbit Coupled Electrons on Kagome Lattice Give Rise to Various Magnetic Orderings"

                        日本物理学会誌「カゴメ格子上のスピン軌道結合した電子が生む多彩な磁気秩序」

2. "Self-consistent analysis of doping effect for magnetic ordering in stacked-kagome Weyl system"

             Akihiro Ozawa, Kentaro Nomura  Phys. Rev. Materials 6, 024202 (2022) [arXiv]

1. "Two-Orbital Effective Model for Magnetic Weyl Semimetal in Kagome-Lattice Shandite"

             Akihiro Ozawa, Kentaro Nomura J. Phys. Soc. Jpn. 88, 123703 (2019) [arXiv]

Research Grant

Grant-in-Aid for Research Activity Start-up

「Theory for voltage-induced magnon in magnetic Weyl semimetals」

 (Total) 2,470,000JPY

 (Direct)1,900,000JPY

 (Indirect) 570,000JPY