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pro vyhledávání: '"Ishiwata S"'
Autor:
Koga, J., Chiashi, Y., Nakamura, A., Akiba, T., Takahashi, H., Shimojima, T., Ishiwata, S., Ishizaka, K.
Transition metal dichalcogenides with superperiodic lattice distortions have been widely investigated as the platform of ultrafast structural phase manipulations. Here we performed ultrafast electron diffraction on room-temperature TaTe$_2$, which ex
Externí odkaz:
http://arxiv.org/abs/2404.08256
Autor:
Katayama, N., Matsuda, Y., Kojima, K., Hara, T., Kitou, S., Mitsuishi, N., Takahashi, H., Ishiwata, S., Ishizaka, K., Sawa, H.
We describe the existence of local distortion discovered in the synchrotron x-ray single-crystal structure analysis of layered ditelluride 1T-MTe2 (M = V, Nb, Ta). In 1T-TaTe2, the double zigzag chain structure of Ta is deformed at about 170 K, and h
Externí odkaz:
http://arxiv.org/abs/2306.05611
Autor:
Kurata, I., Flores-Livas, José A., Sugimoto, H., Takahashi, H., Sagayama, H., Yamasaki, Y., Nomoto, T., Arita, R., Ishiwata, S.
Publikováno v:
Phys. Rev. Materials 5, 015001 (2021)
A new layered perovskite-type oxide Ba$_2$RhO$_4$ was synthesized by a high-pressure technique with the support of convex-hull calculations. The crystal and electronic structure were studied by both experimental and computational tools. Structural re
Externí odkaz:
http://arxiv.org/abs/2010.06556
Autor:
Nishibori, E., Karatsu, S., Terakura, C., Takeshita, N., Kinoshita, M., Ishiwata, S., Tokura, Y., Seki, S.
Publikováno v:
Phys. Rev. B 102, 201106 (2020)
Cu2OSeO3 is known as a unique example of insulating multiferroic compounds with skyrmion spin texture, which is characterized by the chiral cubic crystal structure at ambient pressure. Recently, it has been reported that this compound shows pressure-
Externí odkaz:
http://arxiv.org/abs/2009.07577
Autor:
Mitsuishi, N., Sugita, Y., Bahramy, M. S., Kamitani, M., Sonobe, T., Sakano, M., Shimojima, T., Takahashi, H., Sakai, H., Horiba, K., Kumigashira, H., Taguchi, K., Miyamoto, K., Okuda, T., Ishiwata, S., Motome, Y., Ishizaka, K.
Publikováno v:
Nat. Commun. 11, 2466 (2020)
Topologically nontrivial materials host protected edge states associated with the bulk band inversion through the bulk-edge correspondence. Manipulating such edge states is highly desired for developing new functions and devices practically using the
Externí odkaz:
http://arxiv.org/abs/2004.09223
Autor:
Nakamura, A., Shimojima, T., Chiashi, Y., Kamitani, M., Sakai, H., Ishiwata, S., Li, H., Ishizaka, K.
Controlling acoustic phonons, the carriers of sound and heat, has been attracting great attention toward the manipulation of sonic and thermal properties in nanometric devices. In particular, the photo-acoustic effect using ultrafast optical pulses h
Externí odkaz:
http://arxiv.org/abs/2003.05596
Autor:
Masuda, H., Sakai, H., Takahashi, H., Yamasaki, Y., Nakao, A., Moyoshi, T., Nakao, H., Murakami, Y., Arima, T., Ishiwata, S.
Field-dependent magnetic structure of a layered Dirac material EuMnBi$_2$ was investigated in detail by the single crystal neutron diffraction and the resonant x-ray magnetic diffraction techniques. On the basis of the reflection conditions in the an
Externí odkaz:
http://arxiv.org/abs/2003.03719
Akademický článek
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Publikováno v:
Phys. Rev. Lett. 122, 127207 (2019)
We have experimentally studied a magnetopiezoelectric effect predicted recently for magnetic metals with low crystal symmetries. In EuMnBi2 with antiferromagnetic Mn moments at 77 K, dynamic displacements emerge along the $a$ direction upon applicati
Externí odkaz:
http://arxiv.org/abs/1811.08107
Autor:
Sakai, H., Yokoyama, S., Kuwabara, A., White, J. S., Canévet, E., Rønnow, H. M., Koretsune, T., Arita, R., Miyake, A., Tokunaga, M., Tokura, Y., Ishiwata, S.
Helimagnetic materials are identified as promising for novel spintronic applications. Since helical spin order is manifested as a compromise of competing magnetic exchange interactions, its emergence is limited by unique constraints imposed by the cr
Externí odkaz:
http://arxiv.org/abs/1808.09423