Zobrazeno 1 - 10
of 940
pro vyhledávání: '"R Arita"'
Autor:
Y. Chen, J. Gaudet, G. G. Marcus, T. Nomoto, T. Chen, T. Tomita, M. Ikhlas, H. S. Suzuki, Y. Zhao, W. C. Chen, J. Strempfer, R. Arita, S. Nakatsuji, C. Broholm
Publikováno v:
Physical Review Research, Vol 6, Iss 3, p L032016 (2024)
Using neutrons and x rays we show the topological kagome antiferromagnet Mn_{3}Sn for T
Externí odkaz:
https://doaj.org/article/8fcb9bffac644258be6d8a7a27a17791
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
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
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:
Y. Okamura, S. Minami, Y. Kato, Y. Fujishiro, Y. Kaneko, J. Ikeda, J. Muramoto, R. Kaneko, K. Ueda, V. Kocsis, N. Kanazawa, Y. Taguchi, T. Koretsune, K. Fujiwara, A. Tsukazaki, R. Arita, Y. Tokura, Y. Takahashi
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020)
The evidence of topological origin for the recently observed anomalous Hall effect remains elusive. Here, the authors report that the resonance of the optical Hall conductivity resulted from topological electronic structure gives rise to the large in
Externí odkaz:
https://doaj.org/article/cb77fb1c15e643da8db27423e5b34fb6
Autor:
Kenta Kuroda, Y. Arai, N. Rezaei, S. Kunisada, S. Sakuragi, M. Alaei, Y. Kinoshita, C. Bareille, R. Noguchi, M. Nakayama, S. Akebi, M. Sakano, K. Kawaguchi, M. Arita, S. Ideta, K. Tanaka, H. Kitazawa, K. Okazaki, M. Tokunaga, Y. Haga, S. Shin, H. S. Suzuki, R. Arita, Takeshi Kondo
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020)
CeSb undergoes a devil’s staircase sequence of extremely long-period modulations of the magnetically ordered 4f states. Here, the authors visualize how the devil’s staircase ordering impacts mobile electrons and collapses the well-defined band pi
Externí odkaz:
https://doaj.org/article/8b80ea5db24d4c249d53106240cc8ef0
Autor:
Y. Fujishiro, N. Kanazawa, T. Nakajima, X. Z. Yu, K. Ohishi, Y. Kawamura, K. Kakurai, T. Arima, H. Mitamura, A. Miyake, K. Akiba, M. Tokunaga, A. Matsuo, K. Kindo, T. Koretsune, R. Arita, Y. Tokura
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-8 (2019)
Manipulating topological spin textures are demanded for future spintronic devices, but knowledge about phase transitions among different spin textures remain limited. Here, Fujishiro and Kanazawa et al. report chemical-pressure-controlled phase trans
Externí odkaz:
https://doaj.org/article/e489a55c73fd4b7f977715dbd4a413ec
Autor:
J. Fujioka, R. Yamada, M. Kawamura, S. Sakai, M. Hirayama, R. Arita, T. Okawa, D. Hashizume, M. Hoshino, Y. Tokura
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-6 (2019)
Electron correlation normally makes electrons less mobile, but it is still not clear when correlation becomes very strong in Dirac semimetals. Here, Fujioka et al. report a very high electron mobility exceeding 60,000 cm2V−1s−1 in correlated Dira
Externí odkaz:
https://doaj.org/article/cd9d2e6d922548798105e290fa694ae4
Autor:
Y. Fujishiro, N. Kanazawa, T. Shimojima, A. Nakamura, K. Ishizaka, T. Koretsune, R. Arita, A. Miyake, H. Mitamura, K. Akiba, M. Tokunaga, J. Shiogai, S. Kimura, S. Awaji, A. Tsukazaki, A. Kikkawa, Y. Taguchi, Y. Tokura
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018)
Topological spin textures produce versatile electronic functionalities, but are scarcely exploited for achieving heat to electricity conversion. Here, Fujishiro et al. attribute an enhanced magneto-thermopower in MnGe with topological spin hedgehogs,
Externí odkaz:
https://doaj.org/article/c9944bd6ccd344a0a015bab83486a2c2
Autor:
K. Ishihara, T. Takenaka, Y. Miao, Y. Mizukami, K. Hashimoto, M. Yamashita, M. Konczykowski, R. Masuki, M. Hirayama, T. Nomoto, R. Arita, O. Pavlosiuk, P. Wiśniewski, D. Kaczorowski, T. Shibauchi
Publikováno v:
Physical Review X, Vol 11, Iss 4, p 041048 (2021)
In superconductors, electrons with spin s=1/2 form Cooper pairs whose spin structure is usually singlet (S=0) or triplet (S=1). When the electronic structure near the Fermi level is characterized by fermions with angular momentum j=3/2 due to strong
Externí odkaz:
https://doaj.org/article/adc296baeb974bcca631f07325fe5a7f