Topological quantum materials (TQMs), such as topological insulators, topological superconductors, Weyl semimetals and Weyl ferromagnets, have been collecting tremendous attention in modern condensed matter physics. In spintronics/spin-orbitronics perspectives, TQMs have been playing significant role because of its intriguing spin states that allows spin transport, spin conversion and manifestation of novel spin physics in them.
In this talk, I introduce recent studies on spin physics using TQMs by focusing on WTe2 [1](Weyl semimetal), Co2MnGa [2](Weyl ferromagnet), PbSnTe [3](topological crystalline insulator) and one of the mother materials to host topological states, Bi [4], where spin detection, spin conversion, observation of ferroelectric Berry curvature dipole and g-factor control for efficient spin conversion are realized. If time permits, I also briefly introduce our recent challenge to detect p-wave superconductivity in topological superconductor [5].
[1] K. Ohnishi, M. Shiraishi et al., Adv. Electron. Mater. 9, 2200647 (2023).
[2] M. Aoki, M. Shiraishi et al., Nano Lett. (2023).
[3] T. Nishijima, M. Shiraishi et al., Nano Lett. 23, 2247 (2023).
[4] N. Fukumoto, R. Ohshima, M. Shiraishi et al., PNAS e2215030120 (2023).
[5] K. Ohnishi, R. Ohshima, M. Shiraishi et al., submitted.
Masashi Shiraishi received the B.S., M.S., and Ph.D. degrees from Kyoto University, Japan, in 1991, 1993 and 2003. He was a researcher in SONY Corporation Research Center (1993-2004), an associate professor (2004-2010) and a professor (2010-2013) at Graduate School of Engineering Science, Osaka University, Japan. Since 2013, he has been a professor at Department of Electronic Science and Engineering, Kyoto University, Japan. He was a guest scientist of Max-Planck-Institut für Festkörperforshung (Stuttgart, 1997-1998), a guest professor of Uni. Regensburg (Germany, 2007) and a researcher of JST-PRESTO program (2007-2011).
Prof. Shiraishi has published over 150 technical articles in peer-reviewed journals, including book chapters and review articles, and has given more than 50 invited presentations at international conferences. He received Outstanding Research Award (Magnetic Society of Japan, 2013), Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology (Prizes for Science and Technology, Research Category, 2017) and 36th Osaka Science Award (2018).
Topological quantum materials (TQMs), such as topological insulators, topological superconductors, Weyl semimetals and Weyl ferromagnets, have been collecting tremendous attention in modern condensed matter physics. In spintronics/spin-orbitronics perspectives, TQMs have been playing significant role because of its intriguing spin states that allows spin transport, spin conversion and manifestation of novel spin physics in them.
In this talk, I introduce recent studies on spin physics using TQMs by focusing on WTe2 [1](Weyl semimetal), Co2MnGa [2](Weyl ferromagnet), PbSnTe [3](topological crystalline insulator) and one of the mother materials to host topological states, Bi [4], where spin detection, spin conversion, observation of ferroelectric Berry curvature dipole and g-factor control for efficient spin conversion are realized. If time permits, I also briefly introduce our recent challenge to detect p-wave superconductivity in topological superconductor [5].
[1] K. Ohnishi, M. Shiraishi et al., Adv. Electron. Mater. 9, 2200647 (2023).
[2] M. Aoki, M. Shiraishi et al., Nano Lett. (2023).
[3] T. Nishijima, M. Shiraishi et al., Nano Lett. 23, 2247 (2023).
[4] N. Fukumoto, R. Ohshima, M. Shiraishi et al., PNAS e2215030120 (2023).
[5] K. Ohnishi, R. Ohshima, M. Shiraishi et al., submitted.
Masashi Shiraishi received the B.S., M.S., and Ph.D. degrees from Kyoto University, Japan, in 1991, 1993 and 2003. He was a researcher in SONY Corporation Research Center (1993-2004), an associate professor (2004-2010) and a professor (2010-2013) at Graduate School of Engineering Science, Osaka University, Japan. Since 2013, he has been a professor at Department of Electronic Science and Engineering, Kyoto University, Japan. He was a guest scientist of Max-Planck-Institut für Festkörperforshung (Stuttgart, 1997-1998), a guest professor of Uni. Regensburg (Germany, 2007) and a researcher of JST-PRESTO program (2007-2011).
Prof. Shiraishi has published over 150 technical articles in peer-reviewed journals, including book chapters and review articles, and has given more than 50 invited presentations at international conferences. He received Outstanding Research Award (Magnetic Society of Japan, 2013), Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology (Prizes for Science and Technology, Research Category, 2017) and 36th Osaka Science Award (2018).
