Name

Kenji YASUDA (K. Yasuda)

Biography

Mar. 2010graduated from High School at Komaba, University of Tsukuba (Tokyo)
Mar. 2014B.S., Dept. of Physics, Faculty of Science, University of Tokyo
Mar. 2016M.S., Graduate School of Engineering, University of Tokyo
Apr. 2016-presentPh.D. course student, Dept. of Applied Physics, Graduate School of Engineering, University of Tokyo
JSPS Research Fellow (DC1)

Original Papers

  1. "Quantized chiral edge conduction on reconfigurable domain walls of a magnetic topological insulator"
    K. Yasuda, M. Mogi, R. Yoshimi, A. Tsukazaki, K. S. Takahashi, M. Kawasaki, F. Kagawa and Y. Tokura
    arXiv
  2. "Current-nonlinear Hall effect and spin-orbit torque magnetization switching in a magnetic topological insulator"
    K. Yasuda, A. Tsukazaki, R. Yoshimi, K. Kondou, K. S. Takahashi, Y. Otani, M. Kawasaki and Y. Tokura
    Phys. Rev. Lett. 119, 137204 (2017).(arXiv)
  3. "Large Unidirectional Magnetoresistance in a Magnetic Topological Insulator"
    K. Yasuda, A. Tsukazaki, R. Yoshimi, K. S. Takahashi, M. Kawasaki and Y. Tokura
    Phys. Rev. Lett. 117, 127202 (2016).(arXiv)
  4. "Zero-bias photocurrent in ferromagnetic topological insulator"
    N. Ogawa, R. Yoshimi, K. Yasuda, A. Tsukazaki, M. Kawasaki and Y. Tokura
    Nat. Commun. 7, 12246 (2016).
  5. "Interface-driven topological Hall effect in SrRuO3-SrIrO3 bilayer"
    J. Matsuno, N. Ogawa, K. Yasuda, F. Kagawa, W. Koshibae, N. Nagaosa, Y. Tokura and M. Kawasaki
    Sci. Adv. 2, e1600304 (2016). (arXiv)
  6. "Geometric Hall effects in topological insulator heterostructures"
    K. Yasuda, R. Wakatsuki, T. Morimoto, R. Yoshimi, A. Tsukazaki, K. S. Takahashi, M. Ezawa, M. Kawasaki, N. Nagaosa and Y. Tokura
    Nat. Phys. 12, 555 (2016).
  7. "Brillouin-Wigner theory for high-frequency expansion in periodically driven systems: Application to Floquet topological insulators"
    T. Mikami, S. Kitamura, K. Yasuda, N. Tsuji, T. Oka and H. Aoki
    Phys. Rev. B 93, 144307 (2016). (arXiv)
  8. "Magnetic modulation doping in topological insulators toward higher-temperature quantum anomalous Hall effect"
    M. Mogi, R. Yoshimi, A. Tsukazaki, K. Yasuda, Y. Kozuka, K. S. Takahashi, M. Kawasaki and Y. Tokura
    Appl. Phys. Lett. 107, 182401 (2015). (arXiv)
  9. "Quantum Hall States Stabilized in Semi-magnetic Bilayers of Topological Insulators"
    R. Yoshimi*, K. Yasuda*, A. Tsukazaki, K. S. Takahashi, N. Nagaosa, M. Kawasaki and Y. Tokura
    Nat. Commun. 6, 8530 (2015). (* equal contribution) (arXiv)

Invited Talks

  1. "Current-nonlinear magnetotransport and spin-orbit torque magnetization switching in a magnetic topological insulator"
    SPIE Conference : Spintronics, X Session 5, 10357-27, San-Diego, USA (August 2017)
    K. Yasuda, A. Tsukazaki, R. Yoshimi, K, Kondou, K. S. Takahashi, Y. Otani, M. Kawasaki and Y. Tokura

Presentations in International Conferences

  1. "Quantized chiral edge conduction on reconfigurable domain walls of a magnetic topological insulator"
    CEMS Symposium on Trends in Condensed Matter Physics, P6, Saitama, Japan (November 2017) (November 2017)
    K. Yasuda, M. Mogi, R. Yoshimi, A. Tsukazaki, K. S. Takahashi, M. Kawasaki, F. Kagawa and Y. Tokura
    Selected as Science Poster Award
  2. "Quantized chiral edge conduction on reconfigurable domain walls of a magnetic topological insulator"
    Gordon Research Conference Topological & Correlated Matter, P21-15, Tokyo, Japan (June 2017)
    K. Yasuda, M. Mogi, R. Yoshimi, A. Tsukazaki, K. S. Takahashi, M. Kawasaki, F. Kagawa and Y. Tokura
  3. "Observation and control of the quantized conduction on the domain wall of a magnetic topological insulator"
    International Conference on Topological Materials Science 2017 (Topomat2017), 12AM-2, Tokyo, Japan (May 2017)
    K. Yasuda, M. Mogi, R. Yoshimi, A. Tsukazaki, K. S. Takahashi, M. Kawasaki, F. Kagawa and Y. Tokura
  4. "Large Unidirectional magnetoresistance in a Magnetic Topological Insulator"
    APS March Meeting 2017, R3.00001, New Orleans, Louisiana, USA (March 2017)
    K. Yasuda, A. Tsukazaki, R. Yoshimi, K. S. Takahashi, M. Kawasaki and Y. Tokura
  5. "Spin-orbit torque magnetization switching and current-nonlinear Hall effect in a magnetic topological insulator"
    Topological Phases and Functionality of Correlated Electron Systems (TPFC2017), P18, Kashiwa, Japan (February 2017)
    K. Yasuda, A. Tsukazaki, R. Yoshimi, K, Kondou, K. S. Takahashi, Y. Otani, M. Kawasaki and Y. Tokura
  6. "Large Unidirectional magnetoresistance in a Magnetic Topological Insulator"
    CEMS-QPEC Symposium on Emergent Quantum Materials, P47, Tokyo, Japan (January 2017)
    K. Yasuda, A. Tsukazaki, R. Yoshimi, K. S. Takahashi, M. Kawasaki and Y. Tokura
  7. "Large Unidirectional magnetoresistance in Magnetic Topological Insulator"
    International workshop on nano-spin conversion science & quantum spin dynamics (NSCS-QSD), P5, Tokyo, Japan (October 2016)
    K. Yasuda, A. Tsukazaki, R. Yoshimi, K. S. Takahashi, M. Kawasaki and Y. Tokura
    Selected as Poster Award
  8. "Large Unidirectional magnetoresistance in Magnetic Topological Insulator"
    CIQM Frontiers in Quantum Materials and Devices Workshop (FQMD2016), P41, Wako, Japan (June 2016)
    K. Yasuda, A. Tsukazaki, R. Yoshimi, K. S. Takahashi, M. Kawasaki and Y. Tokura
  9. "Quantum Transport in magnetic/nonmagnetic topological insulator bilayer"
    Workshop on“Topological magnets”, P20, Tokyo, Japan (May 2015)
    K. Yasuda, R. Yoshimi, A. Tsukazaki, K. S. Takahash, N. Nagaosa, M. Kawasaki and Y. Tokura

Other talks in Japan are listed in the Japanese page.

Theses

  • "Photoinduced topological phase transitions on Honeycomb lattice"
    Bachelor Thesis (FY2013, Dept. of Physics, University of Tokyo)
  • "Magnetic structure and Magnetotransport phenomena in topological insulator heterostructures"
    Bachelor Thesis (FY2015, Dept. of Physics, University of Tokyo)

Awards

  • 2015, Shoji Tanaka prize (master's thesis prize)
  • 2015 Best master's thesis Award
  • International workshop on nano-spin conversion science & quantum spin dynamics (NSCS-QSD) Poster Award
  • CEMS Symposium on Trends in Condensed Matter Physics Science Poster Prize
  • TMS2016 Poster preview award