Zobrazeno 1 - 10
of 331
pro vyhledávání: '"Okubo, Susumu"'
Autor:
Yamamoto, Daisuke, Sakurai, Takahiro, Okuto, Ryosuke, Okubo, Susumu, Ohta, Hitoshi, Tanaka, Hidekazu, Uwatoko, Yoshiya
Publikováno v:
Nature Communications 12, Article number: 4263 (2021)
In solid materials, the parameters relevant to quantum effects, such as the spin quantum number, are basically determined and fixed at the chemical synthesis, which makes it challenging to control the amount of quantum correlations. We propose and de
Externí odkaz:
http://arxiv.org/abs/2107.07718
Autor:
Sakurai, Takahiro, Hirao, Yuki, Hijii, Keigo, Okubo, Susumu, Ohta, Hitoshi, Uwatoko, Yoshiya, Kudo, Kazutaka, Koike, Yoji
Publikováno v:
J. Phys. Soc. Jpn. 87 (2018) 033701/1-4
High-pressure and high-field electron spin resonance (ESR) measurements have been performed on a single crystal of the orthogonal-dimer spin system SrCu$_{2}$(BO$_{3}$)$_{2}$. With frequencies below 1 THz, ESR signals associated with transitions from
Externí odkaz:
http://arxiv.org/abs/1801.08242
Autor:
Okubo, Susumu, Nakata, Ryohei, Ohta, Hitoshi, Ikeda, Shohei, Takahashi, Naoki, Sakurai, Takahiro, Zhang, Wei-min, Shimokawa, Tokuro, Toru, Sakai, Okuta, Koji, Hara, Shigeo, Sato, Hirohiko
Publikováno v:
J. Phys. Soc. Jpn. 86, 024703 (2017)
A single crystal S=3/2 perfect kagome lattice antiferromagnet $\mathrm{KCr_3(OH)_6(SO_4)_2}$ (Cr-jarosite) has been studied by X-band and high-frequency electron spin resonance (ESR). The g-values perpendicular to the kagome plane (c-axis) and in the
Externí odkaz:
http://arxiv.org/abs/1611.03262
Autor:
Kamiya, Noriaki, Okubo, Susumu
This paper is to study for local triality relations and ist global relations That is, this is a generalization of automorhisms and derivations.
Comment: 38pages
Comment: 38pages
Externí odkaz:
http://arxiv.org/abs/1609.05892
Autor:
Ohta, Hitoshi, Sakurai, Takahiro, Matsui, Ryosuke, Kawasaki, Kohei, Hirao, Yuki, Okubo, Susumu, Matsubayashi, Kazuyuki, Uwatoko, Yoshiya, Kudo, Kazutaka, Koike, Yoji
Publikováno v:
J. Phys. Chem. B 119 (2015) 13755-13761
We have made a survey of ceramics for the inner parts of the transmission-type pressure cell to achieve the high pressure and the high transmission in THz range. By using the optimal combination of ZrO$_{2}$-based ceramic and Al$_{2}$O$_{3}$ ceramic,
Externí odkaz:
http://arxiv.org/abs/1505.03995
Autor:
Kamiya, Noriaki, Okubo, Susumu
We give a review of recent works for non-associative algebras, especially Lie algebras satisfying the triality relation. They are also intimately related to S_4 (symmetric group of 4-objects) symmetry of the Lie algebras.
Comment: 62 pages
Comment: 62 pages
Externí odkaz:
http://arxiv.org/abs/1503.00614
Autor:
Shimokawa, Tokuro, Fukuoka, Yohei, Fujisawa, Masashi, Zhang, Weimin, Okubo, Susumu, Sakura, Takahiro, Ohta, Hitoshi, Vidyasagar, Reddithota, Yoshitomi, Hiroaki, Kitayama, Shinya, Kita, Takashi
Publikováno v:
J. Appl. Phys. 117, 043909 (2015)
The microscopic magnetic properties of high-quality GdN thin films have been investigated by electron spin resonance (ESR) and ferromagnetic resonance (FMR) measurements. Detailed temperature dependence ESR measurements have shown the existence of tw
Externí odkaz:
http://arxiv.org/abs/1501.07672
Autor:
Nawa, Kazuhiro, Okamoto, Yoshihiko, Matsuo, Akira, Kindo, Koichi, Kitahara, Yoko, Yoshida, Syota, Ikeda, Shohei, Hara, Shigeo, Sakurai, Takahiro, Okubo, Susumu, Ohta, Hitoshi, Hiroi, Zenji
Publikováno v:
J. Phys. Soc. Jpn., 83, 103702 (2014)
In a frustrated J_1-J_2 chain with the nearest-neighbor ferromagnetic interaction J_1 and the next-nearest-neighbor antiferromagnetic interaction J_2, novel magnetic states such as a spin-nematic state are theoretically expected. However, they have b
Externí odkaz:
http://arxiv.org/abs/1409.1310
Autor:
Kamiya, Noriaki, Okubo, Susumu
We introduce a notion of Pre-structurable Algebras based upon triality relations and study its relation to structurable algebra of Allison, as well as to Lie algebras satisfying triality.
Comment: 19 pages, to be submitted to Linear Algebra and
Comment: 19 pages, to be submitted to Linear Algebra and
Externí odkaz:
http://arxiv.org/abs/1310.2568
Autor:
Matsui, Kazuki, Fujisawa, Masashi, Hagiwara, Kenta, Hoshino, Yukihiro, Goto, Takayuki, Sasaki, Takahiko, Tanaka, Hidekazu, Okubo, Susumu, Ohta, Hitoshi
The gem-stone dioptase Cu6Si6O18.6H2O has a chiral crystal structure of equilateral triangular helices consisting of Cu-3d spins. It shows an antiferromagnetic order with an easy axis along c at TN = 15.5 K under zero field, and a magnetization jump
Externí odkaz:
http://arxiv.org/abs/1309.5472