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Nagasawa, Makoto*; Shimizu, Yusuke*; Yamaguchi, Akiko; Tokunaga, Kohei; Mukai, Hiroki*; Aoyagi, Noboru; Mei, H.; Takahashi, Yoshio*
Chemical Geology, 670, p.122431_1 - 122431_25, 2024/12
Times Cited Count：5 Percentile：82.41(Geochemistry & Geophysics)
Zn
Kitazawa, Takafumi; Ikeda, Yoichi*; Sakakibara, Toshiro*; Matsuo, Akira*; Shimizu, Yusei*; Tokunaga, Yo; Haga, Yoshinori; Kindo, Koichi*; Nambu, Yusuke*; Ikeuchi, Kazuhiko*; et al.
Physical Review B, 108(8), p.085105_1 - 085105_7, 2023/08
Times Cited Count：0 Percentile：0.00(Materials Science, Multidisciplinary)
CsUchiyama, Yusuke*; Tokunaga, Natsuki*; Azuma, Kohei*; Kamidaira, Yuki; Tsumune, Daisuke*; Iwasaki, Toshiki*; Yamada, Masatoshi*; Tateda, Yutaka*; Ishimaru, Takashi*; Ito, Yukari*; et al.
Science of the Total Environment, 816, p.151573_1 - 151573_13, 2022/04
Times Cited Count：10 Percentile：53.21(Environmental Sciences)no abstracts in English
Fe
O
Cl with tunable direction in three dimensionsAbe, Nobuyuki*; Shiozawa, Shunsuke*; Matsuura, Keisuke*; Sagayama, Hajime*; Nakao, Akiko*; Ohara, Takashi; Tokunaga, Yusuke*; Arima, Takahisa*
Physical Review B, 101(18), p.180407_1 - 180407_5, 2020/05
Times Cited Count：4 Percentile：18.58(Materials Science, Multidisciplinary)Ishizawa, Akihiro*; Idomura, Yasuhiro; Imadera, Kenji*; Kasuya, Naohiro*; Kanno, Ryutaro*; Satake, Shinsuke*; Tatsuno, Tomoya*; Nakata, Motoki*; Nunami, Masanori*; Maeyama, Shinya*; et al.
Purazuma, Kaku Yugo Gakkai-Shi, 92(3), p.157 - 210, 2016/03
The high-performance computer system Helios which is located at The Computational Simulation Centre (CSC) in The International Fusion Energy Research Centre (IFERC) started its operation in January 2012 under the Broader Approach (BA) agreement between Japan and the EU. The Helios system has been used for magnetised fusion related simulation studies in the EU and Japan and has kept high average usage rate. As a result, the Helios system has contributed to many research products in a wide range of research areas from core plasma physics to reactor material and reactor engineering. This project review gives a short catalogue of domestic simulation research projects. First, we outline the IFERC-CSC project. After that, shown are objectives of the research projects, numerical schemes used in simulation codes, obtained results and necessary computations in future.
NbO
Khanh, N. D.*; Abe, Nobuyuki*; Sagayama, Hajime*; Nakao, Akiko*; Hanashima, Takayasu*; Kiyanagi, Ryoji; Tokunaga, Yusuke*; Arima, Takahisa*
Physical Review B, 93(7), p.075117_1 - 075117_6, 2016/02
Times Cited Count：118 Percentile：95.22(Materials Science, Multidisciplinary)Taguchi, Yasujiro*; Sakai, Hideaki*; Okuyama, Daisuke*; Ishiwata, Shintaro*; Fujioka, Jun*; Fukuda, Tatsuo; Hashizume, Daisuke*; Kagawa, Fumitaka*; Takahashi, Yoichiro*; Shimano, Ryo*; et al.
Physica B; Condensed Matter, 407(11), p.1685 - 1688, 2012/06
Times Cited Count：5 Percentile：22.30(Physics, Condensed Matter)
-type hexaferrites with a room-temperature conical state and magnetically controllable spin helicityTokunaga, Yusuke*; Kaneko, Yoshio*; Okuyama, Daisuke*; Ishiwata, Shintaro*; Arima, Takahisa*; Wakimoto, Shuichi; Kakurai, Kazuhisa; Taguchi, Yasujiro*; Tokura, Yoshinori*
Physical Review Letters, 105(25), p.257201_1 - 257201_4, 2010/12
Times Cited Count：290 Percentile：98.29(Physics, Multidisciplinary)
-UTe
Sakai, Hironori; Tabata, Chihiro; Kaneko, Koji; Hirose, Yusuke; Kitazawa, Takafumi; Yamamoto, Etsuji; Tokiwa, Yoshifumi; Kambe, Shinsaku; Tokunaga, Yo; Haga, Yoshinori
no journal, ,
We have investigated the magnetic properties of a single crystal of a uranium-based van der Waals compound -UTe through the measurements of macroscopic physical properties and neutron scattering experiments. Based on the experimental results, we would like to discuss the magnetic properties of this compound.
-UTeSakai, Hironori; Tabata, Chihiro; Kaneko, Koji; Hirose, Yusuke; Kitazawa, Takafumi; Yamamoto, Etsuji; Tokiwa, Yoshifumi; Kambe, Shinsaku; Tokunaga, Yo; Haga, Yoshinori
no journal, ,
In this study, a single crystal of uranium-based van der Waals compound -UTe
was successfully grown. The structure features distinct Te sites, including a Te-Te bilayer, and a corrugated U network with U-U distances significantly exceeding the Hill limit, indicating a localized 
-electron system. The material shows semiconducting in-plane transport and easy-plane magnetic anisotropy. An antiferromagnetic transition occurs at 
= 5 K, but the magnetic structure was previously unknown. Neutron diffraction was performed to clarify the magnetic order, and this presentation discusses the compound's structural, electronic, and magnetic properties.
Tokunaga, Kohei; Takahashi, Yoshio*; Watanabe, Yusuke; Kozai, Naofumi
no journal, ,
no abstracts in English
Kakurai, Kazuhisa; Wakimoto, Shuichi; Ishiwata, Shintaro*; Okuyama, Daisuke*; Nishi, Masakazu*; Tokunaga, Yusuke*; Arima, Takahisa*; Taguchi, Yasujiro*; Tokura, Yoshiki*
no journal, ,
Araki, Ryuhei; Hirose, Yusuke; Haga, Yoshinori; Kitazawa, Takafumi; Tokunaga, Yo; Onuki, Yoshichika*; Settai, Rikio*
no journal, ,
no abstracts in English
Fe
AlO
studied by means of single-crystal neutron diffraction measurementsNakajima, Taro*; Tokunaga, Yusuke*; Matsuda, Masaaki*; Dissanayake, S.*; Fernandez-Baca, J. A.*; Kakurai, Kazuhisa; Taguchi, Yasujiro*; Tokura, Yoshinori*; Arima, Takahisa*
no journal, ,
no abstracts in English
Sekikawa, Takuya; Inokuma, Yusuke*; Ono, Yoshiaki*; Tokunaga, Yo; Kai, Takeshi
no journal, ,
Deoxyribonucleic acid (DNA), which carries the genetic information of living organisms through the diverse arrangement of guanine-cytosine and adenine-thymine base pairs, has been discussed as a stage of solid state physics as well as various possibilities including magnetism and superconductivity. In this study, we calculated the structural changes and band dispersion of DNA hole-doped by irradiation and other processes using the first-principles calculation software OpenMX. As a result, it was found that the relatively large molecular orbitals of base pairs, which carry genetic information, and the very narrow molecular orbitals of the sugar chain, which support the structure of DNA, hybridize, especially in the region where many electrons are lost above 10 valence, and an electronic state similar to the heavy electron system observed in rare earth compounds is developed. The discussion will also incorporate strong correlation effects such as the effective mass of electrons traveling DNA. The results of this research will contribute to the elucidation of the electronic structure of DNA and the heavy fermion state.
Watanabe, Yusuke; Kozai, Naofumi; Dohi, Terumi; Matsueda, Makoto; Koarai, Kazuma; Tokunaga, Kohei
no journal, ,
no abstracts in English
Tokunaga, Kohei; Takahashi, Yoshio*; Watanabe, Yusuke; Kozai, Naofumi
no journal, ,
no abstracts in English
