Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Kei S. Takahashi"'
Autor:
Makoto Masuko, Minoru Kawamura, Ryutaro Yoshimi, Motoaki Hirayama, Yuya Ikeda, Ryota Watanabe, James Jun He, Denis Maryenko, Atsushi Tsukazaki, Kei S. Takahashi, Masashi Kawasaki, Naoto Nagaosa, Yoshinori Tokura
Publikováno v:
npj Quantum Materials, Vol 7, Iss 1, Pp 1-7 (2022)
Abstract In a hybrid system of topological insulator (TI)/superconductor (SC), the proximity-induced topological superconductivity is expected to appear at the interface. Here we propose and demonstrate that a TI/SC hybrid Bi2Te3/PdTe2 heterostructur
Externí odkaz:
https://doaj.org/article/4acb662243a44eb7aca45ac5085d59a3
Autor:
Yoshihiro D. Kato, Yoshihiro Okamura, Susumu Minami, Reika Fujimura, Masataka Mogi, Ryutaro Yoshimi, Atsushi Tsukazaki, Kei S. Takahashi, Masashi Kawasaki, Ryotaro Arita, Yoshinori Tokura, Youtarou Takahashi
Publikováno v:
npj Quantum Materials, Vol 7, Iss 1, Pp 1-7 (2022)
Abstract Geometrical aspects of electronic states in condensed matter have led to the experimental realization of enhanced electromagnetic phenomena, as exemplified by the giant anomalous Hall effect (AHE) in topological semimetals. However, the guid
Externí odkaz:
https://doaj.org/article/3bc4f55832504ed7b92bd143acebf5b2
Autor:
Masataka Mogi, Kenji Yasuda, Reika Fujimura, Ryutaro Yoshimi, Naoki Ogawa, Atsushi Tsukazaki, Minoru Kawamura, Kei S. Takahashi, Masashi Kawasaki, Yoshinori Tokura
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-6 (2021)
Electrical manipulation of magnetization in devices made of topological materials may be an essential route towards future spintronics technology. Here, Mogi et al. show efficient current-induced switching of surface ferromagnetism in hetero-bilayers
Externí odkaz:
https://doaj.org/article/59c4b7a7efcd46fa8f222e29075b5c9f
Autor:
Kenji Yasuda, Hironori Yasuda, Tian Liang, Ryutaro Yoshimi, Atsushi Tsukazaki, Kei S. Takahashi, Naoto Nagaosa, Masashi Kawasaki, Yoshinori Tokura
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-6 (2019)
The superconducting proximity effect on the surface state of a topological insulator is promising to generate topological superconductivity. Here, Yasuda et al. reported enhanced nonreciprocal charge transport in a Bi2Te3/FeTe heterostructure with an
Externí odkaz:
https://doaj.org/article/f7685fa4679f4025a37f755c4c6fbc63
Autor:
Ken N. Okada, Youtarou Takahashi, Masataka Mogi, Ryutaro Yoshimi, Atsushi Tsukazaki, Kei S. Takahashi, Naoki Ogawa, Masashi Kawasaki, Yoshinori Tokura
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-6 (2016)
Quantized magnetoelectric coupling, which induces exotic magneto-optical phenomena, awaits to be evidenced in topological insulators. Here, Okada et al. demonstrate Faraday and Kerr rotations of magnetic topological insulator surfaces in quantum anom
Externí odkaz:
https://doaj.org/article/965e44c1d3cc4b8db1ae034ee1d74a35
Autor:
Shinichi Itoh, Yasuo Endoh, Tetsuya Yokoo, Soshi Ibuka, Je-Geun Park, Yoshio Kaneko, Kei S. Takahashi, Yoshinori Tokura, Naoto Nagaosa
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-8 (2016)
Whilst Weyl fermions have characteristic effects in magnetotransport measurements in condensed matter systems, their effects on other properties remain unexplored. Here, the authors use neutron Brillouin scattering to evidence the interaction of Weyl
Externí odkaz:
https://doaj.org/article/b4d8d84c211c4522afa6e6c55470149a
Autor:
Minoru Kawamura, Masataka Mogi, Ryutaro Yoshimi, Takahiro Morimoto, Kei S. Takahashi, Atsushi Tsukazaki, Naoto Nagaosa, Masashi Kawasaki, Yoshinori Tokura
Publikováno v:
Nature Physics. 19:333-337
Autor:
Yuma Okazaki, Takehiko Oe, Minoru Kawamura, Ryutaro Yoshimi, Shuji Nakamura, Shintaro Takada, Masataka Mogi, Kei S. Takahashi, Atsushi Tsukazaki, Masashi Kawasaki, Yoshinori Tokura, Nobu-Hisa Kaneko
Publikováno v:
Nature Physics. 18:25-29
Autor:
Ryutaro Yoshimi, Minoru Kawamura, Kenji Yasuda, Atsushi Tsukazaki, Kei S. Takahashi, Masashi Kawasaki, Yoshinori Tokura
We have investigated the nonreciprocal electrical transport, that is a nonlinear resistance effect depending on the current direction, in multiferroic Rashba semiconductor (Ge,Mn)Te. Due to coexistence of ferromagnetic and ferroelectric orders, (Ge,M
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bdbf362d519156022abb58fbc0ba7a0e
Autor:
Atsushi Tsukazaki, Naoto Nagaosa, Kei S. Takahashi, Masashi Kawasaki, Takahiro Morimoto, Masataka Mogi, Kenji Yasuda, Yoshinori Tokura, Minoru Kawamura, Ryutaro Yoshimi
Publikováno v:
Nature Nanotechnology. 15:831-835
The topological nature of the quantum anomalous Hall effect (QAHE) causes a dissipationless chiral edge current at the sample boundary1,2. Of fundamental interest is whether the chirality of the band structure manifests itself in charge transport pro