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Kubo, Katsunori
Journal of the Physical Society of Japan, 94(5), p.054703_1 - 054703_7, 2025/05
Yamauchi, Hiroki; Metoki, Naoto; Watanuki, Ryuta*; Hong, T.*; Fernandez-Baca, J. A.*; Hagihara, Masato; Masuda, Takatsugu*; Yoshizawa, Hideki*; Ito, Shinichi*
Journal of the Physical Society of Japan, 94(5), p.054705_1 - 054705_8, 2025/04
Efthimiopoulos, I.*; Klotz, S.*; Kunc, K.*; Baptiste, B.*; Chauvigne, P.*; Hattori, Takanori
Physical Review B, 111(13), p.134103_1 - 134103_13, 2025/04
We present a comprehensive study of the high pressure behaviour of ReO using X-ray and neutron diffraction, Raman scattering and first-principles calculations to 15 GPa. We show that the ambient pressure
structure converts at 0.7 GPa in a continuous phase transition directly to a cubic phase with space group
and rhombohedral
structures in this pressure range are an artifact due to an alteration of the sample by high-flux synchrotron X-ray radiation. The structural pressure dependence of the
O samples are presented. The data shed light onto the unusual transition and densification mechanism due to progressive tilting of essentially rigid ReO
octahedra.
Tamatsukuri, Hiromu; Uchihara, Takeru*; Mitsuda, Setsuo*; Ishii, Yuta*; Nakao, Hironori*; Takehana, Kanji*; Imanaka, Yasutaka*
Physical Review B, 111(13), p.134403_1 - 134403_9, 2025/04
Chudo, Hiroyuki; Yokoi, Naoto*; Matsuo, Mamoru; Harii, Kazuya*; Suzuki, Jun*; Imai, Masaki; Sato, Masahiro*; Maekawa, Sadamichi*; Saito, Eiji*
Physical Review Letters, 134(13), p.130603_1 - 130603_5, 2025/04
Rajeev, H. S.*; Hu, X.*; Chen, W.-L.*; Zhang, D.*; Chen, T.*; Kofu, Maiko*; Kajimoto, Ryoichi; Nakamura, Mitsutaka; Chen, A. Z.*; Johnson, G. C.*; et al.
Journal of the Physical Society of Japan, 94(3), p.034602_1 - 034602_14, 2025/03
Ba, Y.*; Yamamoto, Kei; 6 of others*
Physical Review B, 111(10), p.104401_1 - 104401_15, 2025/03
Matsumura, Hiroki*; Tokunaga, Yo; Sakai, Hironori; Kambe, Shinsaku; 13 of others*
Physical Review B, 111(9), p.094507_1 - 094507_9, 2025/03
Hase, Masashi*; Kaneko, Koji; Tabata, Chihiro; Yamauchi, Hiroki; Tsujii, Naohito*; Dnni, A.*
Physical Review B, 111(9), p.094403_1 - 094403_9, 2025/03
Metoki, Naoto; Yamauchi, Hiroki; Hagihara, Masato; Watanuki, Ryuta*; Kawamura, Seiko; Kofu, Maiko*; Nakajima, Kenji; Matsuda, Masaaki*
Physical Review B, 111(10), p.104424_1 - 104424_9, 2025/03
Inelastic neutron scattering experiments were carried out to understand the unusual successive order in NdB with the frustrated Shatry-Sutherland (SS) lattice. The pseudo-quartet with
and
splits into four levels in the magnetically ordered states. The spectra can be explained with the on-site magnetic interaction
, the coupling of
with quadrupole
, and the uniaxial crystalline electric field. The
-electron states reproduce the temperature dependences of the in-plane moment
which is the primary order parameter, and a weakly induced
as the secondary order parameter. The magnetic-quadrupole coupling emerges and play essential role under the geometrical frustration, where the Heisenberg interactions are cancelled out.
Iwamoto, Hiroki; Niikura, Megumi*; Mizuno, Rurie*
Physical Review C, 111(3), p.034614_1 - 034614_13, 2025/03
A negative muon in the 1 orbital can be captured by a nucleus, leading to subsequent nuclear dacay processes. The accurate prediction of total nuclear capture rates, which could be crucial in fields such as geochemistry, nuclear astrophysics, and semiconductor device developement, remains challenging with curren physics models. This study aims to develop a comprehensive machine learning (ML) model to estimate the total nuclear capture rate of a negative muon, integrating physical information and experimental data within a Bayesian framework. The study employs an ML model based on Gaussian process regression, using experimental data with evaluated uncertainties as training data. The model incoporates the Goulard-Primakoff formula as prior information and applies a transfer learning approach to improve estimations, particularly in data-sparse regions. The developed ML model is shown to outperform theoretical physics models in both accuracy and comprehensiveness, with key experiments identified to further refine the model performance. The estimates generated in this study will be incorporated into muon nuclear data applied accross a variety of research fields.
Gubler, P.; Ichikawa, Masaya; Song, T.*; Bratkovskaya, E.*
Physical Review C, 111(3), p.034908_1 - 034908_12, 2025/03
Okuizumi, Mao*; Auton, C. J.*; Endo, Shunsuke; Fujioka, Hiroyuki*; Hirota, Katsuya*; Ino, Takashi*; Ishizaki, Kohei*; Kimura, Atsushi; Kitaguchi, Masaaki*; Koga, Jun*; et al.
Physical Review C, 111(3), p.034611_1 - 034611_6, 2025/03
Inoue, Rintaro*; Oda, Takashi; Nakagawa, Hiroshi; Tominaga, Taiki*; Ikegami, Takahisa*; Konuma, Tsuyoshi*; Iwase, Hiroki*; Kawakita, Yukinobu; Sato, Mamoru*; Sugiyama, Masaaki*
Biophysical Journal, 124(3), p.540 - 548, 2025/02
Times Cited Count:0 Percentile:0.00(Biophysics)May, A. F.*; Tabata, Chihiro; Okamoto, Satoshi*; Ortiz, B. R.*; Christianson, A. D.*; Yan, J.*; Kaneko, Koji; McGuire, M. A.*
Physical Review Materials (Internet), 9(2), p.024406_1 - 024406_13, 2025/02
Times Cited Count:0Maeda, Mizuho*; Matsuda, Tatsuma*; Haga, Yoshinori; Shirasaki, Kenji*; Kimura, Noriaki*
Journal of the Physical Society of Japan, 94(2), p.024707_1 - 024707_6, 2025/01
Times Cited Count:0 Percentile:0.00(Physics, Multidisciplinary)Che, G.*; Fei, Y.*; Tang, X.*; Zhao, Z.*; Hattori, Takanori; Abe, Jun*; Wang, X.*; Ju, J.*; Dong, X.*; Wang, Y.*; et al.
Physical Chemistry Chemical Physics, 27(2), p.1112 - 1118, 2025/01
Times Cited Count:1 Percentile:0.00(Chemistry, Physical)Pressure-induced polymerization (PIP) of aromatic molecules has emerged as an effective method for synthesizing various carbon-based materials. In this work, PIP of 1,4-difluorobenzene (1,4-DFB) was investigated. high-pressure investigations of 1,4-DFB reveal a phase transition at approximately 12.0 GPa and an irreversible chemical reaction at 18.7 GPa. Structural analysis of the product and the kinetics of the reaction uncovered the formation of pseudohexagonal stacked fluoro-diamond nanothreads with linear growth. Compared to the crystal structures of benzene under high pressure, 1,4-DFB exhibits higher compression along the [001] axis. The anisotropic compression is attributed to the stronger H
interaction along the [01
] axis and the potential compression-inhibiting H
F interactions along the [100] and [010] axes, and it facilitates a possible reaction pathway along the [01
] axis. This work emphasizes the crucial role of functionalization in modulating molecular stacking and influencing the reaction pathway.
Mori, Michiyasu; Tomasello, B.*; Ziman, T.*
Physical Review B, 111(1), p.014407_1 - 014407_12, 2025/01
Times Cited Count:0 Percentile:0.00(Materials Science, Multidisciplinary)Jin, H.*; Choi, E. S.*; Wu, H.-C.*; Curro, N. J.*; Nawa, Kazuhiro*; Sato, Taku*; Kiyanagi, Ryoji; Ohara, Takashi; Klavins, P.*; Taufour, V.*
Physical Review B, 111(3), p.035103_1 - 035103_7, 2025/01
Times Cited Count:0 Percentile:0.00(Materials Science, Multidisciplinary)Nii, Yoichi*; Yamamoto, Kei; Kanno, Masaki*; Maekawa, Sadamichi*; Onose, Yoshinori*
Physical Review Letters, 134(2), p.027001_1 - 027001_5, 2025/01
Times Cited Count:1 Percentile:94.79(Physics, Multidisciplinary)