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Nakata, Koki; Kim, S. K.*; Takayoshi, Shintaro*
no journal, ,
We study the laser control of magnon topological phases induced by the Aharonov-Casher effect in insulating antiferromagnets (AFs). Our results provide a handle to control and design magnon topological properties in the insulating AF.
Tsuchiya, Harufumi; Ma, F.; Kitatani, Fumito
no journal, ,
In order to quantify nuclear materials in nuclear fuels, we have developed a compact neutron resonance transmission system. As part of the development, experiments were made at a neutron Time-OF-Facility GELINA for the purpose of evaluating how a sample shape and/or its arrangement affect uncertainty of NRTA measurement. In the experiments, we used a cuboid sample and a pellet-type sample whose size is smaller than the beam size. To analyze the experimental data, we developed analytical methods and implemented them in a resonance analysis code REFIT. It was found that the uncertainty were reduced by using the analytical methods. This research was implemented under the subsidiary for nuclear security promotion of MEXT.
Hajima, Ryoichi*; Omer, M.
no journal, ,
no abstracts in English
Moriya, Katsuhiro; Miyao, Tomoaki*
no journal, ,
no abstracts in English
Fe
O
Kobata, Masaaki; Yoshii, Kenji; Fukuda, Tatsuo; Kawasaki, Ikuto; Satou, Yukihiko; Tanida, Hajime; Okane, Tetsuo; Yamagami, Hiroshi; Yaita, Tsuyoshi; Harii, Kazuya; et al.
no journal, ,
We have investigated the electronic structures of Pt/YFeO thin films irradiated by gamma ray and heavy particles. Investigating details of this system is interesting from a possible application of waste heat recovery using the spin Seebeck effect (SSE) due to a tolerance against a presence of atomic defect. Irradiation of 
Co gamma ray does not affect the spectral profiles such as Fe 2
, a fact being consistent with the gamma-ray tolerance of SSE as reported previously. On the other hand, the irradiation of Au particles was found to lead to a chemical shift of some photoelectron peaks, suggesting a possible defect of some ions such as Fe
.
Tokunaga, Yo; Aoki, Dai*; Braithwaite, D.*; Knebel, G.*; Brison, J.-P.*; Pourret, A.*; Lapertot, G.*; Niu, Q.*; Valiska, M.*; Flouquet, J.*; et al.
no journal, ,
In this study, using a single crystal of URhGe, we performed zero-field NMR study under uniaxial stress. For all the observed NMR peaks, a successive shift toward lower frequencies has been ob- served with increasing the uniaxial stress. The behavior indicates uniform and successive change of local environments at the nuclear positions. Simultaneously, however, we have also seen a broadening of the NMR peaks with increasing the stress, in particular above 0.8 GPa, suggesting the distribution of the local environments with larger stresses.
Onishi, Hiroaki; Miyashita, Seiji*
no journal, ,
no abstracts in English
Tokunaga, Yo
no journal, ,
We report our recent NMR studies on the novel spin-triplet superconductor UTe, which is at the verge of the ferromagnetic order. The upper critical field H
exceeding the Pauli limit indicates the spin-triplet state. For the field along 
-axis, the field reentrant superconductivity is observed up to 35T, where the first order metamagnetic transition occurs. The NMR results have revealed unconventional magnetic and superconducting properties of this compound from a microscopic point of view.
FeO and magnetic inelastic neutron scatteringShamoto, Shinichi; Yasui, Yukio*; Matsuura, Masato*; Akatsu, Mitsuhiro*; Ieda, Junichi; Harii, Kazuya; Ono, Masao; Yamamoto, Kei; Ito, Takashi; Nemoto, Yuichi*
no journal, ,
no abstracts in English
transitions in 
Ca and their interpretationUtsuno, Yutaka; Shimizu, Noritaka*; Ideguchi, Eiji*; Aoi, Nori*
no journal, ,
no abstracts in English
Yokota, Terufumi
no journal, ,
no abstracts in English
Sakai, Hironori; Tokunaga, Yo; Haga, Yoshinori; Kambe, Shinsaku; Zhu, J.-X.*; Ronning, F.*; Ramakrishna, S. K.*; Reyes, A. P.*; Kotegawa, Hisashi*; To, Hideki*; et al.
no journal, ,
In heavy fermion superconductor CeCoIn, slight Zn substitutions for In atoms induce antiferromagnetism, while slight Ni substitutions for Co atoms suppress superconductivity. The both substituted CeCoIn exhibit non- fermi-liquid behaviors near the phase boundaries which have been detected by magnetization and specific heat measurements. We have performed NMR experiments in these systems to investigate the microscopic effects by substituents. We will discuss about the spin fluctuations near the boundaries by NMR relaxation rates.
Al
, 2Kambe, Shinsaku; Sakai, Hironori; Tokunaga, Yo; Haga, Yoshinori; Masuda, Hayato*; Higashinaka, Ryuji*; Matsuda, Tatsuma*; Aoki, Yuji*
no journal, ,
no abstracts in English
transition from the superdeformed state in CaIdeguchi, Eiji*; Kib
di, T.*; Dowie, J. T. H.*; Hoang, T. H.*; Kumar Raju, M.*; Akber, A. A.*; Bignell, L.*; Coombes, B.*; Eriksen, T. K.*; Gerathy, M. S. M.*; et al.
no journal, ,
no abstracts in English
Kaneko, Koji
no journal, ,
no abstracts in English
Kaneko, Koji; Tabata, Chihiro*; Oishi, Kazuki*; Ito, Takashi; Nakao, Hironori*; Frontzek, M. D.*; Matsuda, Masaaki*; Munakata, Koji*; Nakao, Akiko*; Ohara, Takashi; et al.
no journal, ,
no abstracts in English
2 and hydrogen terminated Si(110)-11Asaoka, Hidehito; Yano, Masahiro; Terasawa, Tomoo; Yasuda, Satoshi
no journal, ,
no abstracts in English
Haga, Yoshinori; Yamamoto, Etsuji
no journal, ,
no abstracts in English
Cf by Coulomb excitation gamma-ray spectroscopyPham, T. T.*; Yanagihara, Rikuto*; Ideguchi, Eiji*; Orlandi, R.; Nishio, Katsuhisa; Makii, Hiroyuki; Asai, Masato; Hirose, Kentaro; Tsukada, Kazuaki; Toyoshima, Atsushi*; et al.
no journal, ,
Yoshida, Junya; Hayakawa, Shuhei; Ekawa, Hiroyuki*; Yoshimoto, Masahiro*; Kasagi, Ayumi*; Lin, P. M.*; Nyaw, A. N. L.*; Nakazawa, Kazuma*
no journal, ,
J-PARC E07 is an experiment to detect double hypernuclear events with the largest statistics in the past using photographic emulsion sheets. Experimental data on 
- and 
-nucleon interaction, are obtained by mass measurements of various double hypernuclei. The main step in the analysis of this experiment is the tracking of 
particles in emulsion sheets under optical microscopes. We expect to complete the first period analysis of all the sheets by March 2020. The number of events obtained in the first period is about 40% of the planned yield. The remaining events will be detected in the second search in the near future. It is considered that the cause of missing particles was that the prediction of the incident position of particles was incorrect due to poor flatness of the uppermost stream sheet. Therefore, we are trying to correct the surface position and find the missing particles.