R. Yamada*, M. T. Birch*, P. R. Baral*, S. Okumura, R. Nakano, S. Gao, M. Ezawa, T. Nomoto, J. Masell, Y. Ishihara, K. K. Kolincio, I. Belopolski, H. Sagayama, H. Nakao, K. Ohishi, T. Ohhara, R. Kiyanagi, T. Nakajima, Y. Tokura, T. Arima, Y. Motome, M. M. Hirschmann, and M. Hirschberger, “A metallic p-wave magnet with commensurate spin helix”, Nature 646, 837 (2025).
N. Yoshikawa*, S. Okumura*, Y. Hirai, K. Ogawa, K. Fujiwara, J. Ikeda, A. Ozawa, T. Koretsune, R. Arita, A. Mitra, A. Tsukazaki, T. Oka, and R. Shimano, “Light-induced anomalous Hall conductivity in massive 3D Dirac semimetal Co3Sn2S2”, Phys. Rev. B 111, 245104 (2025). [→ハイライト]
Y. Hirai*, S. Okumura*, N. Yoshikawa, T. Oka, and R. Shimano, “Floquet Weyl states at one-photon resonance: An origin of nonperturbative optical responses in three-dimensional materials”, Phys. Rev. Research 6, L012027 (2024). [→ハイライト]
S. Okumura, V. P. Kravchuk, and M. Garst, “Instability of Magnetic Skyrmion Strings Induced by Longitudinal Spin Currents”, Phys. Rev. Lett. 131, 066702 (2023). [→ハイライト]
S. Okumura, T. Morimoto, Y. Kato, and Y. Motome, “Quadratic optical responses in a chiral magnet”, Phys. Rev. B 104, L180407 (2021).
S. Okumura, S. Hayami, Y. Kato, and Y. Motome, “Magnetic hedgehog lattices in noncentrosymmetric metals”, Phys. Rev. B 101, 144416 (2020). [→ハイライト]
Shoya Kasai, Kotaro Shimizu, Shun Okumura, Yasuyuki Kato, and Yukitoshi Motome,
“Three-dimensional Topological Superstructure of Magnetic Hopfions Threaded by Meron Strings in Easy-plane Magnets”,
Hung-Hsuan Teh, Tokiro Numasawa, Shun Okumura, and Takashi Oka,
“Inverse Spin Hall Effect in Nonequilibrium Dirac Systems Induced by Anomalous Flow Imbalance”,
Yoshua Hirai, Naotaka Yoshikawa, Masashi Kawaguchi, Masamitsu Hayashi, Shun Okumura, Takashi Oka, and Ryo Shimano,
“Anomalous Hall effect of light-driven three-dimensional Dirac electrons in bismuth”,
Rinsuke Yamada*, Max T. Birch*, Priya R. Baral*, Shun Okumura, Ryota Nakano, Shang Gao, Motohiko Ezawa, Takuya Nomoto, Jan Masell, Yuki Ishihara, Kamil K. Kolincio, Ilya Belopolski, Hajime Sagayama, Hironori Nakao, Kazuki Ohishi, Takashi Ohhara, Ryoji Kiyanagi, Taro Nakajima, Yoshinori Tokura, Taka-hisa Arima, Yukitoshi Motome, Moritz M. Hirschmann, and Max Hirschberger,
“A metallic p-wave magnet with commensurate spin helix”,
Nature 646, 837 (2025), arXiv:2502.10386.
Koichi Okazaki, Shun Okumura, Shintaro Takayoshi, and Takashi Oka,
“Many-body Keldysh crossover in the dc-driven Haldane spin chain”,
Phys. Rev. B 111, 235422 (2025), arXiv:2409.09578.
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,
“Light-induced anomalous Hall conductivity in massive 3D Dirac semimetal Co3Sn2S2”,
Phys. Rev. B 111, 245104 (2025) [selected as Editor's suggestion], arXiv:2209.11932. [→ハイライト]
Kotaro Shimizu, Shun Okumura, Yasuyuki Kato, and Yukitoshi Motome,
“Current-induced motion of nanoscale magnetic torons over the wide range of the Hall angle”,
Commun. Phys. 8, 69 (2025), arXiv:2407.02983.
Kotaro Shimizu, Shun Okumura, Yasuyuki Kato, and Yukitoshi Motome,
“Soliton penetration from edges in a monoaxial chiral magnet”,
Phys. Rev. B 111, 024411 (2025), arXiv:2409.10842.
Sogen Ikegami, Kiyu Fukui, Shun Okumura, Yasuyuki Kato, and Yukitoshi Motome,
“Topological phase diagram of the Haldane model on a Bishamon-kikko–honeycomb lattice”,
Phys. Rev. B 110, 245107 (2024), arXiv:2405.06287.
Atsushi Ono, Shun Okumura, Shohei Imai, and Yutaka Akagi,
“High harmonic generation from electrons moving in topological spin textures”,
Phys. Rev. B 110, 125111 (2024), arXiv:2405.01351.
Shun Akatsuka*, Sebastian Esser*, Shun Okumura, Ryota Yambe, Rinsuke Yamada, Moritz M. Hirschmann, Seno Aji, Jonathan S. White, Shang Gao, Yoshichika Onuki, Taka-hisa Arima, Taro Nakajima, and Max Hirschberger,
“Non-coplanar helimagnetism in the layered van-der-Waals metal DyTe3”,
Nat. Commun. 15, 4291 (2024), arXiv:2306.04854.
Yoshua Hirai*, Shun Okumura*, Naotaka Yoshikawa, Takashi Oka, and Ryo Shimano,
“Floquet Weyl states at one-photon resonance: An origin of nonperturbative optical responses in three-dimensional materials”,
Phys. Rev. Research 6, L012027 (2024). [→ハイライト]
Kotaro Shimizu, Shun Okumura, Yasuyuki Kato, and Yukitoshi Motome,
“Emergent electric field from magnetic resonances in a one-dimensional chiral magnet”,
Phys. Rev. B 108, 134436 (2023), arXiv:2307.08017.
Shun Okumura, Volodymyr P. Kravchuk, and Markus Garst,
“Instability of Magnetic Skyrmion Strings Induced by Longitudinal Spin Currents”,
Phys. Rev. Lett. 131, 066702 (2023) [selected as Editor's suggestion], arXiv:2303.08532. [→ハイライト]
Shun Okumura, Satoru Hayami, Yasuyuki Kato, and Yukitoshi Motome,
“Magnetic Hedgehog Lattice in a Centrosymmetric Cubic Metal”,
J. Phys. Soc. Jpn. 91, 093702 (2022), arXiv:2206.03042. [→ハイライト]
Kotaro Shimizu, Shun Okumura, Yasuyuki Kato, and Yukitoshi Motome,
“Phase degree of freedom and topology in multiple-Q spin textures”,
Phys. Rev. B 105, 224405 (2022), arXiv:2201.03290.
Shun Okumura, Takahiro Morimoto, Yasuyuki Kato, and Yukitoshi Motome,
“Quadratic optical responses in a chiral magnet”,
Phys. Rev. B 104, L180407 (2021), [Erratum] Phys. Rev. B 108, 219902(E) (2023), arXiv:2108.00674. [→ハイライト]
Takahiro Morimoto*, Sota Kitamura*, and Shun Okumura,
“Electric polarization and nonlinear optical effects in noncentrosymmetric magnets”,
Phys. Rev. B 104, 075139 (2021) [selected as Editor’s Suggestion], arXiv:2104.11418.
Kotaro Shimizu, Shun Okumura, Yasuyuki Kato, and Yukitoshi Motome,
“Spin Moiré Engineering of Emergent Electromagnetism”,
Phys. Rev. B 103, 184421 (2021), arXiv:2009.14569.
Kotaro Shimizu, Shun Okumura, Yasuyuki Kato, and Yukitoshi Motome,
“Phase transitions between helices, vortices, and hedgehogs driven by spatial anisotropy in chiral magnets”,
Phys. Rev. B 103, 054427 (2021), arXiv:2010.16187.
Shun Okumura, Satoru Hayami, Yasuyuki Kato, and Yukitoshi Motome,
“Magnetic hedgehog lattices in noncentrosymmetric metals”,
Phys. Rev. B 101, 144416 (2020), arXiv:1908.05044. [→ハイライト]
Shun Okumura, Hiroaki Ishizuka, Yasuyuki Kato, Junichiro Ohe, and Yukitoshi Motome,
“Spin-current diode with a monoaxial chiral magnet”,
Appl. Phys. Lett. 115, 102401 (2019), arXiv:1903.12358.
Shun Okumura, Yasuyuki Kato, and Yukitoshi Motome,
“Lock-in of a Chiral Soliton Lattice by Itinerant Electrons”,
J. Phys. Soc. Jpn. 87, 033708 (2018), arXiv:1801.02872.
Shun Okumura, Yasuyuki Kato, and Yukitoshi Motome,
“Monte Carlo Study of Magnetoresistance in a Chiral Soliton Lattice”,
J. Phys. Soc. Jpn. 86, 063701 (2017), arXiv:1704.01708.
Kotaro Shimizu, Shun Okumura, Yasuyuki Kato, and Yukitoshi Motome,
“Phase shift, ellipticity, angle, and topological number in skyrmion lattices”,
J. Phys.: Conf. Ser. 2164, 012069 (2022), arXiv:2109.14222.
Shun Okumura, Takahiro Morimoto, Yasuyuki Kato, and Yukitoshi Motome,
“Electrical conductivity in helical and conical magnetic states”,
J. Phys.: Conf. Ser. 2164, 012068 (2022), arXiv:2109.15038.
Shun Okumura, Satoru Hayami, Yasuyuki Kato, and Yukitoshi Motome,
“Tracing Monopoles and Anti-monopoles in a Magnetic Hedgehog Lattice”,
JPS Conf. Proc. 30, 011010 (2020), arXiv:1909.01316.
Shun Okumura, Yasuyuki Kato, and Yukitoshi Motome,
“Chiral helimagnetic state in a Kondo lattice model with Dzyaloshinskii-Moriya interaction”,
奥村 駿,
「磁気単極子秩序形成の基底状態解析」,
東京大学情報基盤センター スーパーコンピューティングニュース Vol. 25 No.4, pp.15-19 (2023).
清水 宏太郎, 奥村 駿, 加藤 康之, 求 幸年,
【最近の研究から】「トポロジカル磁気構造におけるスピンモアレエンジニアリング」,
日本物理学会誌 78, pp.314-319 (2023) [表紙絵掲載]
奥村 駿,
「カイラル磁性が示す非線形光学応答 〜第2回QLC若手研究奨励賞受賞報告〜」,