Rina Takagi

Biography

2009.03 B.S. in Applied Physics, University of Tokyo (Supervisor : Prof. Yoshinori Tokura)
2011.03 M.S. in Applied Physics, University of Tokyo (Supervisor : Prof. Kazushi Kanoda)
2014.03 Ph.D. in Applied Physics, University of Tokyo (Supervisor : Prof. Kazushi Kanoda)
2013.04 – 2014.05 JSPS Research Fellow (DC2, PD)
2014.06 – 2019.01 Postdoctoral researcher, RIKEN Center for Emergent Matter Science (CEMS)
2019.02 – 2019.03 Researcher, RIKEN Center for Emergent Matter Science (CEMS)
2019.04 – Research Associate, Department of Applied Physics / Institute of Engineering Innovation, University of Tokyo

Award

  1. Ando Incentive Prize for the Study of Electronics (2021.06, The Foundation of ANDO Laboratory)
  2. The Young Scientists’ Prize (2020.04, Ministry of Education, Culture, Sports, Science and Technology)
  3. Young Scientist Award (2019.11, Physical Society of Japan)
  4. Research Incentive Award (2019.03, RIKEN)



Original paper

  1. “Hybridized magnon modes in the quenched skyrmion crystal”
    R. Takagi, M. Garst, J. Sahliger, C. H. Back, Y. Tokura, S. Seki
    Phys. Rev. B 104, 144410 (2021).

  2. “Direct visualization of the three-dimensional shape of skyrmion strings in a noncentrosymmetric magnet”
    S. Seki, M. Suzuki, M. Ishibashi, R. Takagi, N. D. Khanh, Y. Shiota, K. Shibata, W. Koshibae, Y. Tokura, T. Ono
    Nature Materials (Advanced Online Publication).

  3. “Particle-size dependent structural transformation of skyrmion lattice”
    R. Takagi, Y. Yamasaki, T. Yokouchi, V. Ukleev, Y. Yokoyama, H. Nakao, T. Arima, Y. Tokura, S. Seki
    Nature Communications 11, 5685 (2020).

  4. “Multiorbital antiferromagnetic metal induced by intramolecular self-doping”
    R. Takagi, H. Gangi, K. Miyagawa, E. Nishibori, H. Kasai, H. Seo, B. Zhou, A. Kobayashi, K. Kanoda
    Phys. Rev. Research 2, 033321 (2020).

  5. “Nanometric square skyrmion lattice in a centrosymmetric tetragonal magnet”
    N. D. Khanh, T. Nakajima, X. Z. Yu, S. Gao, K. Shibata, M. Hirschberger, Y. Yamasaki, H. Sagayama, H. Nakao, L. C. Peng, K. Nakajima, R. Takagi, T. Arima, Y. Tokura, S. Seki
    Nature Nanotechnology 15, 444 (2020).

  6. “Controlled transformation of skyrmions and antiskyrmions in a non-centrosymmetric magnet”
    L. Peng, R. Takagi, W. Koshibae, K. Shibata, K. Nakajima, T. Arima, N. Nagaosa, S. Seki, X. Z. Yu, Y. Tokura
    Nature Nanotechnology 15, 181 (2020).

  7. “Propagation dynamics of spin excitations along skyrmion strings”
    S. Seki, M. Garst, J. Waizner, R. Takagi, N. D. Khanh, Y. Okamura, K. Kondou, F. Kagawa, Y. Otani, Y. Tokura
    Nature Communications 11, 256 (2020).

  8. “Bloch Lines Constituting Antiskyrmions Captured via Differential Phase Contrast”
    F. S. Yasin, L. Peng, R. Takagi, N. Kanazawa, S. Seki, Y. Tokura, X. Z. Yu
    Advanced Materials 32, 2004206 (2020).

  9. 13C NMR evidence for strong electron correlation and antiferromagnetic order in the single-component molecular material Pd(tmdt)2
    T. Takahashi, K. Sunami, K. Miyagawa, R. Takagi, B. Zhou, A. Kobayashi, K. Kanoda
    Phys. Rev. B 100, 075117 (2019).

  10. “Multiple-q non-collinear magnetism in an itinerant hexagonal magnet”
    R. Takagi, J. S. White, S. Hayami, R. Arita, D. Honecker, H. M. Ronnow, Y. Tokura, S. Seki
    Science Advances 4, 3402 (2018).

  11. “Low-field biskyrmion formation in a noncentrosymmetric chimney ladder ferromagnet”
    R. Takagi, X. Z. Yu, J. S. White, K. Shibata, Y. Kaneko, G. Tatara, H. M. Rønnow, Y. Tokura, S. Seki
    Phys. Rev. Lett. 120, 037203 (2018).

  12. “Stabilization of magnetic skyrmions by uniaxial tensile strain”
    S. Seki, Y. Okamura, K. Shibata, R. Takagi, N. D. Khanh, F. Kagawa, T. Arima, Y. Tokura
    Phys. Rev. B 96, 220404(R) (2017).

  13. “Antiferromagnetic Mott insulating state in the single-component molecular material Pd(tmdt)2″
    R. Takagi, D. P. Sari, S. S. M.-Tajudin, R. Ashi, I. Watanabe, S. Ishibashi, K. Miyagawa, S. Ogura, B. Zhou, A. Kobayashi, and K. Kanoda
    Phys. Rev. B 96, 214432 (2017).

  14. “Spin-gapped Mott insulator with the dimeric arrangement of twisted molecules Zn(tmdt)2”
    R. Takagi, H. Gangi, K. Miyagawa, B. Zhou, A. Kobayashi, and K. Kanoda
    Phys. Rev. B 95, 224427 (2017).

  15. “Spin-wave spectroscopy of the Dzyaloshinskii-Moriya interaction in room-temperature chiral magnets hosting skyrmions”
    R. Takagi, D. Morikawa, K. Karube, N. Kanazawa, K. Shibata, G. Tatara, Y. Tokunaga, T. Arima, Y. Taguchi, Y. Tokura, and S. Seki
    Phys. Rev. B 95, 220406(R) (2017).

  16. “Single-component molecular material hosting antiferromagnetic and spin-gapped Mott subsystems”
    R. Takagi, T. Hamai, H. Gangi, K. Miyagawa, B. Zhou, A. Kobayashi, and K. Kanoda
    Phys. Rev. B 95, 094420 (2017).

  17. “Thermal generation of spin current in a multiferroic helimagnet”
    R. Takagi, Y. Tokunaga, T. Ideue, Y. Taguchi, Y. Tokura, and S. Seki
    APL Mater. 4, 032502 (2016).

  18. “Magnetochiral nonreciprocity of volume spin wave propagation in chiral-lattice ferromagnets”
    S. Seki, Y. Okamura, K. Kondou, K. Shibata, M. Kubota, R. Takagi, F. Kagawa, M. Kawasaki, G. Tatara, Y. Otani, Y. Tokura
    Phys. Rev. B 93, 235131 (2016).

  19. “Electronic states and molecular dynamics of single-component molecular conductors [M(tmdt)2] (M = Ni, Pt) studied by 13C and 1H NMR”
    R. Takagi, K. Miyagawa, M. Yoshimura, H. Gangi, K. Kanoda, B. Zhou, Y. Idobata, and A. Kobayashi
    Phys. Rev. B 93, 024403 (2016).

  20. “Antiferromagnetic Ordering in the Single-Component Molecular Conductor [Pd(tmdt)2]”
    S. Ogura, Y. Idobata, B. Zhou, A. Kobayashi, R. Takagi, K. Miyagawa, K. Kanoda, H. Kasai, E. Nishibori, C. Satoko, and B. Delley
    Inorg. Chem. 55, 7709 (2016).

  21. “Thermal generation of spin current in an antiferromagnet”
    S. Seki, T. Ideue, M. Kubota, Y. Kozuka, R. Takagi, M. Nakamura, Y. Kaneko, M. Kawasaki, and Y. Tokura
    Phys. Rev. Lett. 115, 266601 (2015).

  22. “Single-Component Molecular Conductor [Cu(dmdt)2] with Three-dimensionally Arranged Magnetic Moments, Exhibiting a Coupled Electric and Magnetic Transition”
    B. Zhou, Y. Idobata, A. Kobayashi, H. B. Cui, R. Kato, R. Takagi, K. Miyagawa, K. Kanoda, and H. Kobayashi
    Journal of the American Chemical Society 134, 12724 (2012).

  23. “NMR Evidence for Antiferromagnetic Transition in the Single-Component Molecular System, [Cu(tmdt)2]”
    R. Takagi, K. Miyagawa, K. Kanoda, B. Zhou, A. Kobayashi, and H. Kobayashi
    Phys. Rev. B 85, 184424 (2012).



Invited Talk

  1. “Multiple-q noncollinear magnetism in an itinerant hexagonal magnet”
    R. Takagi, J. S. White, S. Hayami, R. Arita, D. Honecker, H. M. Ronnow, Y. Tokura, and S. Seki
    4th International Conference on Functional Materials Science 2018 (ICFMS 2018), Bali, Indonesia, November 2018

  2. “Multiple-q Helimagnetism in an Itinerant Hexagonal Magnet”
    R. Takagi, J. S. White, S. Hayami, D. Honecker, H. M. Ronnow, Y. Tokura, S. Seki
    2018 International Conference on Magnetism (ICM2018), San Francisco, USA, August 2018

  3. “Diverse electronic states in single-component molecular materials M(tmdt)2”
    R. Takagi, H. Gangi, T. Hamai, K. Miyagawa, I. Watanabe, D. Puspita, R. Ashi, S. S. Mohd-Tajudin, B. Zhou, A. Kobayashi, and K. Kanoda
    International Workshop on Organic Molecular Systems, Pulau Pinang, Malaysia, August 2017