Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Sumida, Kazuki"'
Autor:
Sumida, Kazuki, Sakuraba, Yuya, Masuda, Keisuke, Kono, Takashi, Kakoki, Masaaki, Goto, Kazuki, Zhou, Weinan, Miyamoto, Koji, Miura, Yoshio, Okuda, Taichi, Kimura, Akio
Publikováno v:
Commun. Mater. 1, 89 (2020)
Weyl semimetals are characterized by the presence of massless band dispersion in momentum space. When a Weyl semimetal meets magnetism, large anomalous transport properties emerge as a consequence of its topological nature. Here, using $in-situ$ spin
Externí odkaz:
http://arxiv.org/abs/2006.15769
Autor:
Zhang, Peng, Wang, Zhijun, Wu, Xianxin, Yaji, Koichiro, Ishida, Yukiaki, Kohama, Yoshimitsu, Dai, Guangyang, Sun, Yue, Bareille, Cedric, Kuroda, Kenta, Kondo, Takeshi, Okazaki, Kozo, Kindo, Koichi, Wang, Xiancheng, Jin, Changqing, Hu, Jiangping, Thomale, Ronny, Sumida, Kazuki, Wu, Shilong, Miyamoto, Koji, Okuda, Taichi, Ding, Hong, Gu, G. D., Tamegai, Tsuyoshi, Kawakami, Takuto, Sato, Masatoshi, Shin, Shik
Publikováno v:
Nature Physics 15, 41 (2019)
Topological insulators and semimetals as well as unconventional iron-based superconductors have attracted major recent attention in condensed matter physics. Previously, however, little overlap has been identified between these two vibrant fields, ev
Externí odkaz:
http://arxiv.org/abs/1809.09977
Autor:
Nurmamat, Munisa, Ishida, Yukiaki, Yori, Ryohei, Sumida, Kazuki, Zhu, Siyuan, Nakatake, Masashi, Ueda, Yoshifumi, Taniguchi, Masaki, Shin, Shik, Akahama, Yuichi, Kimura, Akio
Transient electron-hole pairs generated in semiconductors can exhibit unconventional excitonic condensation. Anisotropy in the carrier mass is considered as the key to elongate the life time of the pairs, and hence to stabilize the condensation. Here
Externí odkaz:
http://arxiv.org/abs/1805.12327
Autor:
Zhang, Peng, Wang, Zhijun, Ishida, Yukiaki, Kohama, Yoshimitsu, Wu, Xianxin, Yaji, Koichiro, Sun, Yue, Bareille, Cedric, Kuroda, Kenta, Kondo, Takeshi, Okazaki, Kozo, Kindo, Koichi, Sumida, Kazuki, Wu, Shilong, Miyamoto, Koji, Okuda, Taichi, Ding, Hong, Gu, G. D., Tamegai, Tsuyoshi, Thomale, Ronny, Kawakami, Takuto, Sato, Masatoshi, Shin, Shik
Publikováno v:
Part of Nature Physics 15, 41 (2019) (See also arXiv 1809.09977)
Topological Dirac semimetals (TDSs) exhibit bulk Dirac cones protected by time reversal and crystal symmetry, as well as surface states originating from non-trivial topology. While there is a manifold possible onset of superconducting order in such s
Externí odkaz:
http://arxiv.org/abs/1803.00845
Autor:
Iwasawa, Hideaki1,2,3,4 (AUTHOR) iwasawa.hideaki@qst.go.jp, Sumida, Kazuki5 (AUTHOR), Ishida, Shigeyuki6 (AUTHOR), Le Fèvre, Patrick7 (AUTHOR), Bertran, François7 (AUTHOR), Yoshida, Yoshiyuki6 (AUTHOR), Eisaki, Hiroshi6 (AUTHOR), Santander-Syro, Andrés F.8 (AUTHOR), Okuda, Taichi4 (AUTHOR)
Publikováno v:
Scientific Reports. 11/18/2023, Vol. 13 Issue 1, p1-7. 7p.
Autor:
Hirahara, Toru, Eremeev, Sergey V., Shirasawa, Tetsuroh, Okuyama, Yuma, Kubo, Takayuki, Nakanishi, Ryosuke, Akiyama, Ryota, Takayama, Akari, Hajiri, Tetsuya, Ideta, Shin-ichiro, Matsunami, Masaharu, Sumida, Kazuki, Miyamoto, Koji, Takagi, Yasumasa, Tanaka, Kiyohisa, Okuda, Taichi, Yokoyama, Toshihiko, Kimura, Shin-ichi, Hasegawa, Shuji, Chulkov, Evgueni V.
Publikováno v:
Nano Letters 17, 3493 (2017)
Inducing magnetism into topological insulators is intriguing for utilizing exotic phenomena such as the quantum anomalous Hall effect (QAHE) for technological applications. While most studies have focused on doping magnetic impurities to open a gap a
Externí odkaz:
http://arxiv.org/abs/1709.02004
Autor:
Wu, Shi-Long, Sumida, Kazuki, Miyamoto, Koji, Taguchi, Kazuaki, Yoshikawa, Tomoki, Kimura, Akio, Ueda, Yoshifumi, Arita, Masashi, Nagao, Masanori, Watauchi, Satoshi, Tanaka, Isao, Okuda, Taichi
Conventional Rashba spin polarization is caused by the combination of strong spin-orbit interaction (SOI) and spatial inversion asymmetry. However, Rashba- and Dresselhaus-type spin-split states are predicted in LaOBiS$_2$ system by recent theory eve
Externí odkaz:
http://arxiv.org/abs/1705.02365
Autor:
Akiyama, Ryota, Sumida, Kazuki, Ichinokura, Satoru, Kimura, Akio, Kokh, Konstantin A., Tereshchenko, Oleg E., Hasegawa, Shuji
Publikováno v:
J. Phys. Cond. Mater. 30, 265001 (2018)
We show Shubnikov-de Haas oscillations in topological insulator (Bi$_{x}$Sb$_{1-x}$)$_{2}$Te$_{3}$ films whose carrier type is p-type (x = 0.29, 0.34) and n-type (x = 0.42). The physical properties such as the Berry phase, mobility, and the scatterin
Externí odkaz:
http://arxiv.org/abs/1701.00137
Publikováno v:
In Progress in Surface Science May 2021 96(2)
Autor:
Zhu, Siyuan, Ishida, Yukiaki, Kuroda, Kenta, Sumida, Kazuki, Ye, Mao, Wang, Jiajia, Pan, Hong, Taniguchi, Masaki, Qiao, Shan, Shin, Shik, Kimura, Akio
Topological insulators (TIs) are a new quantum state of matter. Their surfaces and interfaces act as a topological boundary to generate massless Dirac fermions with spin-helical textures. Investigation of fermion dynamics near the Dirac point is cruc
Externí odkaz:
http://arxiv.org/abs/1507.03475