Magnetic ordering of the Mo3O8-type cluster Mott insulator Na3Sc2(MoO4)2Mo3O8 with spin-1/2 triangular lattice prepared via optimal synthesis Yuya Haraguchi*, Daigo Ishikita & Hiroko Aruga Katori Physical Review Materials8, 084409 (2024).
Charge fluctuations in a cluster Mott state: Hard x-ray photoemission study on a breathing kagome magnet Nb3Cl8
R. Nakamura, D. Takegami, K. Fujinuma, M. Nakamura, M. Ferreira-Carvalho, A. Melendez-Sans, M. Yoshimura, K. -D. Tsuei, Y. Haraguchi, H. Aruga Katori, L. H. Tjeng & T. Mizokawa Physical Review B110, L081109 (2024).
High-temperature magnetic anomaly via suppression of antisite disorder through synthesis route modification in a Kitaev candidate Cu2IrO3 Yuya Haraguchi*, Daisuke Nishio-Hamane, Akira Matsuo, Koichi Kindo & Hiroko Aruga Katori Journal of Physics: Condensed Matter36, 405801 (2024).
Impact of oxidation state on the valence-bond glass physics in the lithium-intercalated Mo3O8 cluster Mott insulators Daigo Ishikita, Yuya Haraguchi* & Hiroko Aruga Katori Physical Review B109, 024405 (2024).
2023
Magnetic ordering in the Jeff = 0 nickelate NiRh2O4 prepared via a solid-state metathesis Yuya Haraguchi*, Daisuke Nishio-Hamane & Hiroko Aruga Katori Physical Review Materials7, 084413 (2023).
Magnetic field induced valence change in Eu(Co1-xNix)2P2 up to 60 T Raito Nakamura, Azumi Ishita, Jin Nakamura, Hiroto Ohta, Yuya Haraguchi, Hiroko Aruga Katori, Hajime Ishikawa, Akira Matsuo, Koichi Kindo, Minoru Nohara & Akihiko Ikeda* Physical Review B107, 235110 (2023).
Monoclinic distortion in the hyperhoneycomb Kitaev material b-ZnIrO3 revealed by improved sample quality Yuya Haraguchi* & Hiroko Aruga Katori Chemistry Letters52, 404-407 (2023).
The internal magnetic field in a ferromagnetic compound Y2Co12P7
Kazuki Ohishi*, Hiroto Ohta, Yusuke Kato, Hiroko Aruga Katori, Ola K. Forslund, Elisabetta Nocerino, Nami Matsubara, Papadopoulos Konstantinos, Fredrik O. L. Johansson, Yasmine Sassa, Martin Månsson, Bassam Hitti, Donald Arseneau, Gerald D. Morris, Jess H. Brewer & Jun Sugiyama* Journal of Physics: Conference Series2462(1), 012008 (2023).
Memory Effects in the Ising Spin Glass System Fe0.5Mn0.5TiO3
Airi Furukawa, Hiroko Aruga Katori & Hazuki Kawano-Furukawa* JPS Conf. Proc.38, 011123 (2023).
2022
Perfect kagome-lattice antiferromagnets with Jeff = 1/2: The Co2+-analogs of copper minerals volborthite and vesignieite Yuya Haraguchi*, Takehiro Ohnoda, Akira Matsuo, Kindo Kindo & Hiroko Aruga Katori Physical Review B106, 214421 (2022)
Improvement of optical transmittance of SiO2 surface by femtosecond-laser-induced homogeneous nanostructure formation
Minami Edakubo, Lukas Janos Richter, Yuya Haraguchi, Hiroko Aruga Katori, Jürgen Ihlemann & Godai Miyaji* Optical Materials Express12, 3982-3989 (2022).
Observation of topological flat bands in the kagome semiconductor Nb3Cl8
Zhenyu Sun, Hui Zhou, Cuixiang Wang, Shiv Kumar, Daiyu Geng, Shaosheng Yue, Xin Han, Yuya Haraguchi, Yuya Haraguchi, Kenya Shimada, Peng Cheng, Lan Chen, Youguo Shi*, Kehui Wu*, Sheng Meng* & Baojie Feng* Nano Letters22, 4596 (2022).
Sinusoidal Magnetic Structure of Andalusite-Type AlxFe2-xGeO5 with x = 0.09 and 0.15 Kazuo Kakimoto, Hiroto Ohta, Yuya Haraguchi, Masato Hagihala, Shuki Torii, Takashi Kamiyama & Hiroko Aruga Katori* Journal of the Physical Society of Japan91, 054707 (2022).
Magnetism of AlxFe2-xGeO5 with Andalusite Structure Kazuo Kakimoto, Saki Takada, Hiroto Ohta, Yuya Haraguchi, Masato Hagihala, Shuki Torii, Takashi Kamiyama, Hiroyuki Mitamura, Masashi Tokunaga, Atsushi Hatakeyama & Hiroko Aruga Katori* Journal of the Physical Society of Japan91, 054704 (2022).
Formation of the metastable iron(III) germanate Fe2GeO5 through kinetic control of the oxidative reaction Kazuo Kakimoto, Yoshiaki Ohki, Saki Takada, Yuya Haraguchi, Ayako Yamamoto & Hiroko Aruga Katori* Chemistry Letters51, 451-454 (2022).
Spin-glass transition in the spin-orbit-entangled Jeff = 0 Mott insulating double-perovskite ruthenate Hayato Yatsuzuka, Yuya Haraguchi*, Aikra Matsuo, Koichi Kindo & Hiroko Aruga Katori Scientific Reports12, 2429 (2022).
Quantum antiferromagnet bluebellite comprising a maple-leaf lattice made of spin-1/2 Cu2+ ions Yuya Haraguchi*, Akira Matsuo, Koichi Kindo & Zenji Hiroi Physical Review B104, 174439 (2021).
Metallic state in the vicinity of molecular orbital crystallization in the d1 thiospinel ZnTi2S4 prepared via a reductive ion-exchange reaction Yuya Haraguchi*, Hiroki Arikai & Hiroko Aruga Katori Journal of Physics: Condensed Matter33, 395603 (2021).
4d3 Ru5+ triangular lattice antiferromagnets: layered rock-salt b-Li3Mg2RuO6 and ion-exchanged delafossite Ag3Mg2RuO6 Yuya Haraguchi*, Kazuo Kakimoto & Hiroko Aruga Katori Journal of Solid State Chemistry299, 122171 (2021).
Magnetic Study on Y2M3Co9P7 (M: Transition Metals) with Cation-Ordered Zr2Fe12P7-Type Structure Yusuke Kato, Hiroto Ohta* & Hiroko Aruga Katori Solid State Phenomena289, 164 (2019).
2018
Disappearance of the Itinerant Electronic Ferromagnetism in Layered Compound Sr2VO3CoAs due to Self-Electron-Doping Effect Hiroto Ohta*, Daisuke Noguchi & Hiroko Aruga Katori Journal of the Physical Society of Japan87, 094711 (2018).
Electron doping effect on AeCo2As2 (Ae = Ca, Sr and Ba) Hiroto Ohta*, Daisuke Akabane & Hiroko Aruga Katori Physics Procedia75, 309-313 (2015).
Magnetism in Two-Leg Ladder Compound Ba6Fe8S15 with Mixed Oxidation State of Iron Hiroko Aruga Katori*, Takahiro Adachi, Hiroto Ohta, Shin Nakamura & Akio Fuwa Physics Procedia75, 552-556 (2015).
2014
Small ordered magnetic moment in a weak itinerant electron ferromagnet Sc3In
K. Kamishima, R. Note, T. Imakubo, K. Watanabe, H.A. Katori, A. Fujimori, M. Sakai, K.V. Kamenev Journal of Alloys and Compounds, 589, 37-41 (2014).
2013
Itinerant electronic ferromagnetism in Sr2ScO3CoAs with largely-spaced CoAs conduction layers Hiroto Ohta*, Daisuke Noguchi, Koichiro Nabetani & Hiroko Aruga Katori* Physical Review B88, 094441 (2013).
Frustrated magnetism in alkaline-intercalated Mo3O8-type compounds(P23-SF3A-04) Daigo Ishikita, Yuya Haraguchi, Hiroko Aruga Katori
29th International Conference on Low Temperature Physics 2022年8月@札幌コンベンションセンター
Kitaev spin liquid signature in the hyperhoneycomb iridate(P22-SF3A-14) Yuya Haraguchi, Akira Matsuo, Koichi Kindo, Hiroko Aruga Katori
29th International Conference on Low Temperature Physics 2022年8月@札幌コンベンションセンター
From rocksalt to ilmenite: a metathesis route for the synthesis of novel quantum materials(oral 3418549) Yuya Haraguchi, Hiroko Katori, Chishiro Michioka, Hiroaki Ueda, Kazuyoshi Yoshimura
The 2021 International Chemical Congress of Pacific Basin Societies (Pacifichem 2021) online
"Magnetic Study on Y2M3Co9P7 (M: Transition Metals) with Cations Ordered Zr2Fe12P7-type Structure"(poster Mo-PO45)
Yusuke Kato, Hiroto Ohta, Hiroko Aruga Katori
The 21st International Conference on Solid Compounds of Transition Elements (SCTE 2018), March 2018@Vienna University of Technology
"Magnetic Properties of Kyanites M2GeO5 (M = Cr and V)"(poster Tu-PO26) Hiroko Aruga Katori, Saki Takada, Hiroto Ohta, Misato Takahashi, Hazuki Kawano-Furukawa
The 21st International Conference on Solid Compounds of Transition Elements (SCTE 2018), March 2018@Vienna University of Technology
"Study on Effects of Site-selective Substitution in Itinerant Ferromagnets Y2Co12P7"(poster) Yusuke Kato, Hiroto Ohta, Hiroko Aruga Katori
2nd International Symposium on Negative Thermal Expansion and Related Materials (ISNTE-II), December 2017@Tokyo Institute of Technology
"Crystal Structure and Magnetic Property of Polymorphs (AlxFe2-x)GeO5"(oral) Hiroko Aruga Katori
2nd International Symposium on Negative Thermal Expansion and Related Materials (ISNTE-II), December 2017@Tokyo Institute of Technology
"Phase Diagram and Magnetism of (AlxFe2-x)GeO5 - Polymorph"(poster) Saki Takada, Hiroto Ohta, Hiroko Aruga Katori
The 6th Toyota RIKEN International Workshop "New Trends in Solid State Chemistry: from Oxides to Mixed Anion Compounds", November 2017@Toyota Commemorative Museum of Industry and Technology
"Magnetism and Electronic States of X2Co12P7 (X = Ti, Zr and Hf)"(poster) Yusuke Kato, Hiroto Ohta, Hiroko Aruga Katori
International Conference on Powder and Powder Metallurgy ~60th Annibersary~, November 2017@Kyoto University
"Study of magnetism and electronic structures of compounds with CoAs layers"(poster) Hiroto Ohta, Atsushi Suzuki, Daisuke Noguchi, Atsushi Oda, Takuya Iinuma, Hiroko Aruga Katori
International Conference on Powder and Powder Metallurgy ~60th Annibersary~, November 2017@Kyoto University
"遍歴強磁性体 A2Co12P7 (A = Ca, Y, Zr) の選択的元素置換効果"(ポスター 21aPS-1) 加藤優典、太田寛人、香取浩子
日本物理学会 2017年秋季大会 2017年9月@岩手大
"Anomalous behavior of localized magnetic moments in itinerant ferromagnets Ln2Co12P7 (Ln: Lanthanoid)"(poster P-TD-70) Hiroto Ohta, Yusuke Watanabe, Hiroko Aruga Katori, Atsushi Miyake, Masashi Tokunaga
the 3rd International Conference on Powder Metallurgy in Asia (APMA2015), November 2015@Kyoto University
"Study of itinerant electronic ferromagnetism in layered compounds Ae2ScO3CoPn (Ae = Sr, Ba, Pn = P, As)"(poster PS-23) Hiroto Ohta, Shohei Ido, Shuku Hashizume, and Hiroko Aruga Katori
International Workshop on Itinerant-Electron Magnetism, September 2015@Kyoto University
"Synthesis and study of electronic state of Sr2CrO2Co2As2 with CoAs conduction layers"(poster PS-28) Atsushi Suzuki, Hiroto Ohta, and Hiroko Aruga Katori
International Workshop on Itinerant-Electron Magnetism, September 2015@@Kyoto University
"Anomalous antiferromagnetic state in Nd2Co12P7"(poster PS-33) Yusuke Watanabe, Hiroto Ohta, Hiroko Aruga Katori, Atsushi Miyake, Masashi Tokunaga
International Workshop on Itinerant-Electron Magnetism, September 2015@@Kyoto University
"Electron doping effect on AeCo2As2 (Ae = Ca, Sr and Ba)"(poster TU.C-P10) Hiroto Ohta, Eisuke Akabane, Hiroko Aruga Katori
20th International Conference on Magnetism (ICM), July 2015@Barcelona
"Anomalousoxidation state of iron in two-leg ladder compound Ba6Fe8S15"(poster TU.E-P16) Hiroko Aruga Katori, Takahiro Adachi, Hiroto Ohta, Shinichi Nakamura, Akio Fuwa
20th International Conference on Magnetism (ICM), July 2015@Barcelona