Zobrazeno 1 - 10
of 334
pro vyhledávání: '"Shimizu Katsuya"'
Autor:
Zhou, Di, Semenok, Dmitrii V., Galasso, Michele, Alabarse, Frederico Gil, Sannikov, Denis A., Troyan, Ivan A., Nakamoto, Yuki, Shimizu, Katsuya, Oganov, Artem R.
Publikováno v:
Adv. Energy Mater. 2024, 2400077
We proposed a new method for synthesis of metal polyhydrides via high-pressure thermal decomposition of corresponding amidoboranes in diamond anvil cells. Within this approach, we synthesized molecular semiconducting cesium ($\textit P4/nmm$-CsH$_7$,
Externí odkaz:
http://arxiv.org/abs/2401.00742
Autor:
Jin, Meiling, Wang, Qing, Liu, Ying, Zheng, Qunfei, Li, Chenkai, Wang, Shaoheng, Wang, Shanmin, Hao, Ning, Nakamoto, Yuki, Shimizu, Katsuya, Zhu, Jinlong
This paper examines the micro-parameters of superconductors. It studies the modulations from weak van der Waals interaction to strong covalence bonding of superconductors. In particular, we studied layered black phosphorus (BP) as a function of press
Externí odkaz:
http://arxiv.org/abs/2307.08385
Autor:
Bi, Jingkai, Nakamoto, Yuki, Shimizu, Katsuya, Zhou, Mi, Wang, Hongbo, Liu, Guangtao, Ma, Yanming
The discovery of clathrate superhydrides has approached the long-standing dream of room-temperature superconductivity and thus inspired their prosperous research under high pressure. However, how to experimentally optimize these compelling superhydri
Externí odkaz:
http://arxiv.org/abs/2204.04623
Autor:
Semenok, Dmitrii V., Troyan, Ivan A., Sadakov, Andrey V., Zhou, Di, Galasso, Michele, Kvashnin, Alexander G., Kruglov, Ivan A., Bykov, Alexey A., Terent'ev, Konstantin Y., Cherepahin, Alexander V., Sobolevskiy, Oleg A., Pervakov, Kirill S., Seregin, Alexey Yu., Helm, Toni, Förster, Tobias, Grockowiak, Audrey D., Tozer, Stanley W., Nakamoto, Yuki, Shimizu, Katsuya, Pudalov, Vladimir M., Lyubutin, Igor S., Oganov, Artem R.
Publikováno v:
Advanced Materials 2022
Polyhydrides are a novel class of superconducting materials with extremely high critical parameters, which is very promising for applications. On the other hand, complete experimental study of the magnetic phase diagram for the best so far known supe
Externí odkaz:
http://arxiv.org/abs/2203.06500
Autor:
Matsumoto, Ryo, Einaga, Mari, Adachi, Shintaro, Yamamoto, Sayaka, Irifune, Tetsuo, Terashima, Kensei, Takeya, Hiroyuki, Nakamoto, Yuki, Shimizu, Katsuya, Takano, Yoshihiko
A diamond anvil cell (DAC) which can generate extremely high pressure of multi-megabar is promising tool to develop a further physics such a high-transition temperature superconductivity. However, electrical transport measurements, which is one of th
Externí odkaz:
http://arxiv.org/abs/2006.09671
Autor:
Matsuoka, Takahiro, Fujihisa, Hiroshi, Ishikawa, Takahiro, Nakagawa, Takaya, Kuno, Keiji, Hirao, Naohisa, Ohishi, Yasuo, Shimizu, Katsuya, Sasaki, Shigeo
Publikováno v:
Phys. Rev. Materials 4, 125402 (2020)
We report the XRD and Raman scattering measurements in combination with DFT calculations that reveal the formation of beryllium polyhydride Be4H8(H2)2 by laser heating Be/H2 mixture to above 1700 K at pressures between 5 GPa and 8 GPa. The Be4H8(H2)2
Externí odkaz:
http://arxiv.org/abs/1911.01526
Autor:
Nakao, Harushige, Einaga, Mari, Sakata, Masafumi, Kitagaki, Masaomi, Shimizu, Katsuya, Kawaguchi, Saori, Hirao, Naohisa, Ohishi, Yasuo
Publikováno v:
J. Phys. Soc. Jpn. 88, 123701 (2019)
Superconductive H3S synthesized from H2S is very poorly crystallized, and has excess sulfur as impurity (3H2S -> 2H3S + S). The phase transition process undergoes in sulfur excess condition, which might cause hydrogen deficiency. The influence of hyd
Externí odkaz:
http://arxiv.org/abs/1908.02826
Publikováno v:
Phys. Rev. B 100, 174506 (2019)
We present materials informatics approach to search for superconducting hydrogen compounds, which is based on a genetic algorithm and a genetic programming. This method consists of four stages: (i) search for stable crystal structures of materials by
Externí odkaz:
http://arxiv.org/abs/1908.00746
Autor:
Matsuoka, Takahiro, Muraoka, Shu, Ishikawa, Takahiro, Niwa, Ken, Ohta, Kenji, Hirao, Naohisa, Kawaguchi, Saori, Ohishi, Yasuo, Shimizu, Katsuya, Sasaki, Shigeo
X-ray diffraction and Raman scattering measurements, and first-principles calculations are performed to search for the formation of NaCl-hydrogen compound. When NaCl and H$_{2}$ mixture is laser-heated to above 1500 K at pressures exceeding 40 GPa, w
Externí odkaz:
http://arxiv.org/abs/1907.06997
Autor:
Mozaffari, Shirin, Sun, Dan, Minkov, Vasily S., Knyazev, Dmitry, Betts, Jonathan B., Einaga, Mari, Shimizu, Katsuya, Eremets, Mikhail I., Balicas, Luis, Balakirev, Fedor F.
Publikováno v:
Nature Communications 10, Article number: 2522 (2019)
We report the temperature dependence of the upper critical fields $\mu_0H_{c2}(T)$ of the high temperature superconductor H$_3$S under applied pressures of 155 and 160 GPa through the electrical resistance transition observed under DC and pulsed magn
Externí odkaz:
http://arxiv.org/abs/1901.11208