Zobrazeno 1 - 10
of 128
pro vyhledávání: '"Yoichi, Okimoto"'
Autor:
Kou Takubo, Atsushi Ono, Shunsuke Ueno, Samiran Banu, Hongwu Yu, Kaito En-ya, Ryota Nishimori, Makoto Kuwahara, Toru Asaka, Kei Maeda, Daiki Ono, Keita Ozawa, Takuma Itoh, Kei Shigematsu, Masaki Azuma, Tadahiko Ishikawa, Yoichi Okimoto, Masaki Hada, Shin-ya Koshihara
Publikováno v:
Communications Materials, Vol 5, Iss 1, Pp 1-9 (2024)
Abstract Ultrafast control of ferroelectricity and magnetism by light is essential for future development in multiple functioning devices. Here, we demonstrate that the intense and ultrafast photo-modulation of the electric dipole can be realized by
Externí odkaz:
https://doaj.org/article/83c9b9c815d14303aeb669aca61014af
Autor:
Yoichi Okimoto, Peiyu Xia, Jiro Itatani, Haruka Matsushima, Tadahiko Ishikawa, Shin-ya Koshihara, Sachio Horiuchi
Publikováno v:
APL Materials, Vol 10, Iss 9, Pp 090702-090702-8 (2022)
We investigated the ultrafast photo-response of a ferroelectric co-crystal of Hdppz–Hca composed of protonated 2,3-di (2-pyridinyl)pyrazine (Hdppz) and deprotonated chloranilic acid (Hca). Whereas the intermolecular proton transfer triggers the fer
Externí odkaz:
https://doaj.org/article/47edb8c02ca7407ea6d21306d3adae86
Autor:
Masayuki Fukuda, Takumi Nishikubo, Hongwu Yu, Yoichi Okimoto, Shin-ya Koshihara, Kazunari Yamaura, Masaki Azuma
Publikováno v:
Inorganic Chemistry. 62:8372-8378
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52814f010d0d51655ca66bf5acdcdae4
https://doi.org/10.1021/acs.inorgchem.3c00940
https://doi.org/10.1021/acs.inorgchem.3c00940
Autor:
Shiori Kihara, Yuki Sakai, Shogo Wakazaki, Takumi Nishikubo, Takehiro Koike, Ko Mibu, Hongwu Yu, Yoichi Okimoto, Shin-ya Koshihara, Masaki Azuma
Publikováno v:
Inorganic Chemistry. 61:12822-12827
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cf4c11d5f9e74ba4b992fb6ffe9eeaad
https://doi.org/10.1021/acs.inorgchem.2c01911
https://doi.org/10.1021/acs.inorgchem.2c01911
Autor:
Takashi Yamamoto, Daiki Hiraga, Ikumi Arashi, Koh Takasugi, Toshio Naito, Tadahiko Ishikawa, Yoichi Okimoto, Shin-ya Koshihara, Mitsushiro Nomura, Reizo Kato
Publikováno v:
Journal of the Physical Society of Japan. 92
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::887917fa586f4df0482d7073f7a962f6
https://doi.org/10.7566/jpsj.92.024701
https://doi.org/10.7566/jpsj.92.024701
Autor:
Tadahiko Ishikawa, Yoichi Okimoto, Ken Onda, Ryo Fukaya, Sumio Ishihara, Tadeusz Luty, Yasuhiko Hayashi, Shin-ya Koshihara, Masaki Hada
Publikováno v:
Physics Reports. 942:1-61
This work reviews the experimental studies on photo-induced cooperative phenomena (photo-induced phase transitions, PIPT), which are related to ultrafast structural and electronic-state dynamics. The review includes a brief history of this research f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c64be6bfa550e38e05fbfb8d47b2d18
https://doi.org/10.1016/j.physrep.2021.10.003
https://doi.org/10.1016/j.physrep.2021.10.003
Autor:
Nao Yamaya, Shin-ya Koshihara, Ken Onda, Kazumasa Horigane, Akira Isayama, Takao Sasagawa, Tadahiko Ishikawa, Yoichi Okimoto, Ryo Fukaya
Publikováno v:
Comptes Rendus. Physique. 22:95-102
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::071db83760dcfdd21fe311967e48a5cc
https://doi.org/10.5802/crphys.35
https://doi.org/10.5802/crphys.35
Autor:
Tadahiko Ishikawa, Yohei Urasawa, Taiki Shindo, Yoichi Okimoto, Shin-ya Koshihara, Seiichi Tanaka, Ken Onda, Takaaki Hiramatsu, Yoshiaki Nakano, Koichiro Tanaka, Hideki Yamochi
Publikováno v:
Applied Sciences, Vol 9, Iss 6, p 1174 (2019)
Over the past two decades (EDO-TTF)2PF6 (EDO-TTF = 4,5-ethylenedioxytetrathiafulvalene), which exhibits a metal–insulator (M–I) phase transition with charge–ordering (CO), has been investigated energetically because of attractive characteristic
Externí odkaz:
https://doaj.org/article/38291e34fedb4fb6be008d36e0873ac6
Autor:
Hongwu Yu, Yoichi Okimoto, Atsuya Morita, Shuhei Shimanuki, Kou Takubo, Tadahiko Ishikawa, Shin-ya Koshihara, Ryusei Minakami, Hirotake Itoh, Shinichiro Iwai, Naoshi Ikeda, Takumi Sakagami, Mayu Nozaki, Tatsuo Fujii
Publikováno v:
Materials
Volume 16
Issue 5
Pages: 1989
Volume 16
Issue 5
Pages: 1989
An epitaxial film of YbFe2O4, a candidate for oxide electronic ferroelectrics, was fabricated on yttrium-stabilized zirconia (YSZ) substrate by magnetron sputtering technique. For the film, second harmonic generation (SHG), and a terahertz radiation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::55ce74a63455289e9cf8030eb5ac2e95
https://doi.org/10.3390/ma16051989
https://doi.org/10.3390/ma16051989
Autor:
Takashi Mizokawa, Hajime Hojo, Akihiko Machida, Tetsu Watanuki, Shin-ya Koshihara, Yuki Sakai, Keisuke Yokoyama, Masaki Azuma, Takashi Imai, Masaichiro Mizumaki, Kengo Oka, Yoichi Okimoto, Takumi Nishikubo, Takahiro Ogata, Koki Maebayashi
Publikováno v:
Journal of the American Chemical Society. 141:19397-19403
Negative thermal expansion (NTE) induced by simultaneous mechanisms, that is, charge transfer and polar-nonpolar transitions, was observed for the first time in BiNi1-xFexO3 (0.25 ≤ x ≤ 0.5). The low-temperature phase was found to have a polar st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3bf0b53fbaeeab88a16597ca7269d82
https://doi.org/10.1021/jacs.9b10336
https://doi.org/10.1021/jacs.9b10336