研究概要

主要論文

「*」は、理研外のみでの成果です。

• 1. Akatsuka, S., Esser, S., Okumura, S., Yambe, R., Yamada, R., Hirschmann, M. M., Aji, S., White, J. S., Gao, S., Onuki, Y., Arima, T., Nakajima, T., and Hirschberger, M.:
  "Non-coplanar helimagnetism in the layered van-der-Waals metal DyTe₃"
  Nat. Commun. 15, 4291 (2024).
• 2. *Hirai, Y., Okumura, S., Yoshikawa, N., Oka, T., and Shimano, R.;
  "Floquet Weyl states at one-photon resonance: An origin of nonperturbative optical responses in three-dimensional materials"
  Phys. Rev. Research 6, L012027 (2024).
• 3. *Okumura, S., Kravchuk, V. P., and Garst, M.:
  "Instability of Magnetic Skyrmion Strings Induced by Longitudinal Spin Currents"
  Phys. Rev. Lett. 131, 066702 (2023).
• 4. *Okumura, S., Hayami, S., Kato, Y., and Motome, Y.:
  "Magnetic Hedgehog Lattice in a Centrosymmetric Cubic Metal"
  J. Phys. Soc. Jpn. 91, 093702 (2022).
• 5. *Okumura, S., Morimoto, T., Kato, Y., and Motome, Y.:
  "Quadratic optical responses in a chiral magnet"
  Phys. Rev. B 104, L180407 (2021).
• 6. *Morimoto, T., Kitamura, S., and Okumura, S.:
  "Electric polarization and nonlinear optical effects in noncentrosymmetric magnets"
  Phys. Rev. B 104, 075139 (2021).
• 7. *Shimizu, K., Okumura, S., Kato, Y., and Motome, Y.:
  "Spin Moiré Engineering of Emergent Electromagnetism"
  Phys. Rev. B 103, 184421 (2021).
• 8. *Okumura, S., Hayami, S., Kato, Y., and Motome, Y.:
  "Magnetic hedgehog lattices in noncentrosymmetric metals"
  Phys. Rev. B 101, 144416 (2020).
• 9. *Okumura, S., Ishizuka, H., Kato., Y., Ohe, J., and Motome, Y.:
  "Spin-current diode with a monoaxial chiral magnet"
  Appl. Phys. Lett. 115, 102401 (2019).
• 10. *Okumura, S., Kato, Y., and Motome, Y.:
  "Lock-in of a Chiral Soliton Lattice by Itinerant Electrons"
  J. Phys. Soc. Jpn. 87, 033708 (2018).

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