Zobrazeno 1 - 10
of 8 139
pro vyhledávání: '"Y, Tokura"'
Autor:
Y. Okamura, K. Shoriki, Y. Nomura, Y. Fujishiro, A. Kitaori, N. Kanazawa, R. Arita, Y. Tokura, Y. Takahashi
Publikováno v:
npj Quantum Materials, Vol 8, Iss 1, Pp 1-7 (2023)
Abstract The kagome-lattice materials promise emergence of Dirac fermions thanks to the special lattice geometry, which potentially realizes intriguing quantum topological states through various many-body interactions. The low-energy electromagnetic
Externí odkaz:
https://doaj.org/article/01d85179f08040f8a7027447802d9862
Autor:
Y. Okamura, H. Handa, R. Yoshimi, A. Tsukazaki, K. S. Takahashi, M. Kawasaki, Y. Tokura, Y. Takahashi
Publikováno v:
npj Quantum Materials, Vol 7, Iss 1, Pp 1-7 (2022)
Abstract The symmetry breaking induced by the ferroelectric transition often triggers the emergence of topological electronic states such as Weyl fermions in polar metals/semimetals. Such strong coupling between the lattice deformation and electronic
Externí odkaz:
https://doaj.org/article/83868a550add49b78ef4c26fbe870f1c
Publikováno v:
APL Materials, Vol 11, Iss 3, Pp 031101-031101-9 (2023)
EuTiO3 (ETO) is a unique magnetic semiconductor with a large localized magnetic moment of Eu2+ (4f 7). By the doping of high-mobility electrons in the Ti 3d conduction band, peculiar magnetotransport properties such as the unconventional anomalous Ha
Externí odkaz:
https://doaj.org/article/26a1a42222ce4f9188b604d5ced635de
Field-induced multiple metal-insulator crossovers of correlated Dirac electrons of perovskite CaIrO3
Autor:
R. Yamada, J. Fujioka, M. Kawamura, S. Sakai, M. Hirayama, R. Arita, T. Okawa, D. Hashizume, T. Sato, F. Kagawa, R. Kurihara, M. Tokunaga, Y. Tokura
Publikováno v:
npj Quantum Materials, Vol 7, Iss 1, Pp 1-6 (2022)
Abstract The interplay between electron correlation and topology of relativistic electrons may lead to a fascinating stage of the research on quantum materials and emergent functions. The emergence of various collective electronic orderings/liquids,
Externí odkaz:
https://doaj.org/article/dd36f4b602944f328a88b1cd907f3483
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
Gyrotropic birefringence is expected to emerge from the magnetoelectric coupling. Here, the authors find polarity and chirality arising from the helical spin order exhibit enhanced optical activities, gyrotropic birefringence and natural optical acti
Externí odkaz:
https://doaj.org/article/727d606b134a4343a96c687aef0ff200
Publikováno v:
APL Materials, Vol 10, Iss 11, Pp 111114-111114-5 (2022)
Carrier doping into two dimensional (2D) Mott insulators is one of the prospective strategies for exploring exotic quantum phenomena. Although ultra-thin oxide films are one such target, it is vitally important to fabricate well-defined and clean sam
Externí odkaz:
https://doaj.org/article/4447cce96cc84ca8b3d46cef80400456
Magneto-optical spectroscopy on Weyl nodes for anomalous and topological Hall effects in chiral MnGe
Autor:
Y. Hayashi, Y. Okamura, N. Kanazawa, T. Yu, T. Koretsune, R. Arita, A. Tsukazaki, M. Ichikawa, M. Kawasaki, Y. Tokura, Y. Takahashi
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
Previous work has proposed that the anomalous and topological Hall effects, associated with Weyl nodes, should have a signature in optical conductivity. Here, using THz optical spectroscopy, the authors assign these two effects to optical conductivit
Externí odkaz:
https://doaj.org/article/d95c9e88627b4c43ab2b8f0395653a68
Autor:
M. Preißinger, K. Karube, D. Ehlers, B. Szigeti, H.-A. Krug von Nidda, J. S. White, V. Ukleev, H. M. Rønnow, Y. Tokunaga, A. Kikkawa, Y. Tokura, Y. Taguchi, I. Kézsmárki
Publikováno v:
npj Quantum Materials, Vol 6, Iss 1, Pp 1-9 (2021)
Abstract Magnetic anisotropy is anticipated to govern the formation of exotic spin textures reported recently in cubic chiral magnets, like low-temperature tilted conical and skyrmion lattice (SkL) states and metastable SkLs with various lattice geom
Externí odkaz:
https://doaj.org/article/9f49956e1a2a4bb0a66f63085acb4689
Autor:
E. Hassanpour, M. C. Weber, Y. Zemp, L. Kuerten, A. Bortis, Y. Tokunaga, Y. Taguchi, Y. Tokura, A. Cano, Th. Lottermoser, M. Fiebig
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-6 (2021)
Domains and domain walls can have distinctively different physical properties. Here, the authors show how to transfer domains into domain walls and vice versa while maintaining their physical properties. Thereby the authors tune a multiferroic state
Externí odkaz:
https://doaj.org/article/c2a7b0ad10ae4b70bbe4d930d1b3dfe8
Autor:
V. Ukleev, K. Karube, P. M. Derlet, C. N. Wang, H. Luetkens, D. Morikawa, A. Kikkawa, L. Mangin-Thro, A. R. Wildes, Y. Yamasaki, Y. Yokoyama, L. Yu, C. Piamonteze, N. Jaouen, Y. Tokunaga, H. M. Rønnow, T. Arima, Y. Tokura, Y. Taguchi, J. S. White
Publikováno v:
npj Quantum Materials, Vol 6, Iss 1, Pp 1-8 (2021)
Abstract In chiral cubic helimagnets, phases of magnetic skyrmions—topologically protected spin whirls—are stabilized by thermal fluctuations over a narrow region directly below the magnetic ordering temperature T c. Due to often being touted for
Externí odkaz:
https://doaj.org/article/8d91e6a15f344edcafc12a1718b9a079