Yusuke Masaki (yusuke.masaki.c1_at_tohoku.ac.jp, please replace _at_ with @.)

Department of Applied Physics, Graduate School of Engineering, Tohoku University

Research interest

  • superconductivity and superfluidity

  • chiral magnets (solitons and skyrmions)

  • phase transitions

  • photo-induced phase transition

  • Non-equilibrium state

Papers

Preprint

  1. M. Shinozaki, S. Hoshino, Y. Masaki, A. N. Bogdanov, A. O. Leonov, J. Kishine, and Y. Kato: ``Fan type spin structure in uni-axial chiral magnets" [arXiv:1705.07778].

Published

  1. Y. Masaki, T. Mizushima, and M. Nitta:``Non-Abelian Half-Quantum Vortices in 3P2 Topological Superfluids''[Phys.Rev.B 105, L220503 (2022), arXiv:2107.02448].

  2. T. Matsushita, J. Ando, Y.Masaki, T. Mizushima, S. Fujimoto, and I. Vekhter: ``Spin-Nernst Effect in Time-Reversal-Invariant Topological Superconductors''[Phys. Rev. Lett. 128, 097001 (2022), arXiv:2110.00463]

  3. M. Hada, S. Ohmura, T. Ishikawa, M. Saigo, N. Keio, W. Yajima, T. Suzuki, D. Urushihara, K. Takubo, Y.Masaki, M. Kuwahara, K. Tsuruta, Y. Hayashi, J. Matsuo, T. Yokoya, K. Onda, F. Shimojo, M. Hase, S. Ishihara, T. Asaka, N. Abe, T. Arima, S. Koshihara, and Y.Okimoto: ``Photoinduced oxygen transport in cobalt double-perovskite crystal EuBaCo2O5.39''[Appl. Mater. Today 24, 101167 (2021)]

  4. Y. Masaki:``Instabilities in monoaxial chiral magnets under a tilted magnetic field"[Phys. Rev. B 101, 214424 (2020), arXiv:1912.12677].

  5. Y. Masaki, T. Mizuhima, and M. Nitta: ``Microscopic description of axisymmetric vortices in 3P2 superfluids" [Phys. Rev. Research 2 013193/1-14 (2020), arXiv:1908.06215].

  6. G. W. Paterson, T. Koyama, M. Shinozaki, Y. Masaki, F. J. T. Goncalves, Y. Shimamoto, T. Sogo, M. Nord, Y. Kousaka, Y. Kato, S. McVitie, and Y. Togawa: ``Order and disorder in the magnetization of the chiral crystal CrNb3S6" Phys. Rev. B 99 224429/1-11 (2019) (Editors' Suggestion).

  7. Y. Masaki: ``Vortex charges and impurity effects based on quasiclassical theory in an s-wave and a chiral p-wave superconductor" Phys. Rev. B 99 054512/1-11 (2019).

  8. Y. Masaki, R. Aoki, Y. Togawa and Y. Kato: ``Chiral solitons in monoaxial chiral magnets in tilted magnetic field" Phys. Rev. B 98 100402/1-5 (2018) (Rapid Communication).

  9. M. Shinozaki, Y. Masaki, R. Aoki, Y. Togawa, and Y. Kato ``Intrinsic hysteresis due to the surface arrier for chiral solitons in monoaxial chiral elimagnets" Phy. Rev. B 97 214413/1-8 (2018) (Editors’ Suggestion).

  10. S. Gliga, G. Hrkac, C. Donnelly, J. Büchi, A. Kleibert, J. Cui, A. Farhan, E. Kirk, R. V. Chopdekar, . Masaki, N. S. Bingham, A. Scholl, R. L. Stamps and L. J. Heyderman ``Emergent dynamic chirality n a thermally driven artificial spin ratchet" Nat. Mater. 16 1106-1111 (2017).

  11. Y. Masaki and R. L. Stamps, ``Magnetic anisotropy and conical phase transition in monoaxial chiral magnets", Phys. Rev. B 95 024418/1-6 (2017).

  12. M. Shinozaki, S. Hoshino, Y. Masaki, J. Kishine, and Y. Kato: ``Finite-Temperature Properties of Three-Dimensional Classical Chiral Helimagnets" J. Phys. Soc. Jpn. 85 074710/1-7 (2016).

  13. Y. Higashi, Y. Nagai, T. Yoshida, Y. Masaki and Y. Yanase: ``Robust zero-energy bound states around a pair-density-wave vortex core in locally noncentrosymmetric superconductor" Phys. Rev. B 93 104529/1–10 (2016).

  14. Y. Masaki and Y. Kato: ``Impurity Effects on Caroli-de Gennes-Matricon Mode in a Vortex Core in Superconductors" J. Phys. Soc. Jpn. 85 014705/1–7 (2016).

  15. Y. Masaki and Y. Kato: ``Impurity Effects on Bound States in Vortex Core of Topological s-Wave Superconductor" J. Phys. Soc. Jpn. 84 094701/1–10 (2015).

Proceedings

  1. Y. Masaki, and Y. Kato: ``Charged and uncharged vortices in quasiclassical theory" Journal of Physics: Conference Series 969 012054 ( 2018).

  2. Y. Masaki and Y. Kato: ``Impurity Effects on Vortex Core States in Topological s-Wave Superconductor: Analysis based on Andreev Approximation" Physics Procedia Volume 65 89– 92 ( 2015).

  3. Y. Masaki and Y. Kato: ``Impurity effects on vortex core states of topological s-wave superconductor" Journal of Physics: Conference Series 568 022028/ 1– 5 ( 2014).

Talk

  1. ``Microscopic calculation of axisymmetric vortex in 3P2 superfluids" on Workshop ``Topological phases and excitations in 3He and Spinor BEC", Kindai University, 22 Dec. 2018

  2. ``Underlying chiral soliton in chiral magnets" Core2Core Progress Meeting, Glasgow, 4 Sep. 2017

  3. ``Non-reciprocal Magnon Appearing in spectral function" chiMag2016 symposium, Hiroshima, O17, 22 Feb 2016