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JAEA Reports

Proceedings of the 12th International Conference on Nuclear Criticality Safety (ICNC2023); October 1-6, 2023, Sendai International Center, Sendai, Miyagi, Japan

Suyama, Kenya; Gunji, Satoshi; Watanabe, Tomoaki; Araki, Shohei; Fukuda, Kodai; Shimada, Kazuya; Fujita, Tatsuya; Ueki, Taro; Nguyen, H.

JAEA-Conf 2024-001, 40 Pages, 2024/07

JAEA-Conf-2024-001.pdf:1.28MB
JAEA-Conf-2024-001-appendix(CD-ROM).zip:163.97MB

The 12th International Conference on Nuclear Criticality Safety (ICNC2023) was held from October 1 to October 6, 2023, at the Sendai International Center (Aobayama, Aoba-ku, Sendai, Miyagi-prefecture 980-0856, Japan), organized by Japan Atomic Energy Agency (JAEA) and co-organized by the Reactor Physics Division of the Atomic Energy Society of Japan (AESJ) and the Nuclear Energy Agency of the Organization for Economic Co-operation and Development (OECD/NEA). 224 presentations passed peer review and 273 technical session registrations, bringing the total number of registered participants to 289, including accompanying persons. Technical tours were also conducted to i) Fukushima Daiichi Nuclear Power Station of TEPCO holdings and Interim Storage Facility Information Center, ii) Nuclear Science Research Institute of JAEA (STACY Renewable Reactor and FCA), iii) NanoTerasu of Tohoku University (synchrotron radiation facility) and Onagawa Nuclear Power Station of Tohoku Electric Power Co., Inc. This report summarizes the conference and compiles the papers that were presented and agreed to be published in the Proceedings.

Journal Articles

Chiral Dirac fermion in a collinear antiferromagnet

Zhang, A.*; Deng, K.*; Sheng, J.*; Liu, P.*; Kumar, S.*; Shimada, Kenya*; Jiang, Z.*; Liu, Z.*; Shen, D.*; Li, J.*; et al.

Chinese Physics Letters, 40(12), p.126101_1 - 126101_8, 2023/12

https://doi.org/10.1088/0256-307X/40/12/126101
 Times Cited Count：2 Percentile：72.40(Physics, Multidisciplinary)

Journal Articles

Dirac gap opening and Dirac-fermion-mediated magnetic coupling in antiferromagnetic Gd-doped topological insulators and their manipulation by synchrotron radiation

Shikin, A. M.*; Estyunin, D. A.*; Surnin, Yu. I.*; Koroleva, A. V.*; Shevchenko, E. V.*; Kokh, K. A.*; Tereshchenko, O. E.*; Kumar, S.*; Schwier, E. F.*; Shimada, Kenya*; et al.

Scientific Reports (Internet), 9(1), p.4813_1 - 4813_17, 2019/03

https://doi.org/10.1038/s41598-019-41137-w
 Times Cited Count：19 Percentile：70.46(Multidisciplinary Sciences)

Journal Articles

Perpendicular magnetic anisotropy with enhanced orbital moments of Fe adatoms on a topological surface of Bi$$_2$$Se$$_3$$

Ye, M.*; Kuroda, Kenta*; Takeda, Yukiharu; Saito, Yuji; Okamoto, Kazuaki*; Zhu, S.-Y.*; Shirai, Kaito*; Miyamoto, Koji*; Arita, Masashi*; Nakatake, Masashi*; et al.

Journal of Physics; Condensed Matter, 25(23), p.232201_1 - 232201_5, 2013/06

https://doi.org/10.1088/0953-8984/25/23/232201
 Times Cited Count：12 Percentile：48.54(Physics, Condensed Matter)

no abstracts in English

Journal Articles

Quasiparticle interference on the surface of Bi$$_{2}$$Se$$_{3}$$ induced by cobalt adatom in the absence of ferromagnetic ordering

Ye. M.*; Eremeev, S. V.*; Kuroda, Kenta*; Krasovskii, E. E.*; Chulkov, E. V.*; Takeda, Yukiharu; Saito, Yuji; Okamoto, Kazuaki*; Zhu, S. Y.*; Miyamoto, Koji*; et al.

Physical Review B, 85(20), p.205317_1 - 205317_5, 2012/05

https://doi.org/10.1103/PhysRevB.85.205317
 Times Cited Count：62 Percentile：89.51(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Conduction-band electronic states of YbInCu$$_4$$ studied by photoemission and soft X-ray absorption spectroscopies

Utsumi, Yuki*; Sato, Hitoshi*; Kurihara, Hidenao*; Maso, Hiroyuki*; Hiraoka, Koichi*; Kojima, Kenichi*; Tobimatsu, Komei*; Okochi, Takuo*; Fujimori, Shinichi; Takeda, Yukiharu; et al.

Physical Review B, 84(11), p.115143_1 - 115143_7, 2011/09

https://doi.org/10.1103/PhysRevB.84.115143
 Times Cited Count：11 Percentile：44.43(Materials Science, Multidisciplinary)

We have studied conduction-band (CB) electronic states of a typical valence-transition compound YbInCu$$_4$$ by means of temperature-dependent hard X-ray photoemission spectroscopy (HX-PES), soft X-ray absorption spectroscopy (XAS), and soft X-ray photoemission spectroscopy (SX-PES) of the valence band. We have described the valence transition in YbInCu$$_4$$ in terms of the charge transfer from the CB to Yb 4$$f$$ states.

Journal Articles

X-ray magnetic circular dichroism and photoemission studies of ferromagnetism in CaMn$$_{1-x}$$Ru$$_{x}$$O$$_{3}$$ thin films

Terai, Kota*; Yoshii, Kenji; Takeda, Yukiharu; Fujimori, Shinichi; Saito, Yuji; Owada, Kenji; Inami, Toshiya; Okane, Tetsuo; Arita, Masashi*; Shimada, Kenya*; et al.

Physical Review B, 77(11), p.115128_1 - 115128_6, 2008/03

https://doi.org/10.1103/PhysRevB.77.115128
 Times Cited Count：16 Percentile：56.47(Materials Science, Multidisciplinary)

Journal Articles

High-resolution photoemission study of the hybridization gap in the Kondo semiconductor CeRhAs

Shimada, Kenya*; Higashiguchi, Mitsuharu*; Arita, Masashi*; Namatame, Hirofumi*; Taniguchi, Masaki*; Fujimori, Shinichi; Saito, Yuji; Fujimori, Atsushi; Takata, Yasutaka*; Shin, S.*; et al.

Journal of Magnetism and Magnetic Materials, 310(2, Part1), p.e57 - e58, 2007/03

We have examined the electronic states of the Kondo semiconductor CeRhAs and the semimetal CeRhSb by means of high-resolution photoemission spectroscopy using tunable photon energies from 40 up to 5948 eV. On the basis of the photon-energy dependence ofthe photoionization cross-section, we have elucidated the p-d-f hybridized states in these compounds.

Journal Articles

Electronic structure and magnetism of CaMn$$_{1-x}$$Ru$$_{x}$$O$$_{3}$$ thin films

Terai, Kota; Yoshii, Kenji; Takeda, Yukiharu; Fujimori, Shinichi; Saito, Yuji; Owada, Kenji; Inami, Toshiya; Okane, Tetsuo; Arita, Masashi*; Shimada, Kenya*; et al.

Journal of Magnetism and Magnetic Materials, 310(2, Part2), p.1070 - 1072, 2007/03

We have studied the electronic and magnetic properties of epitaxially grown CaMn$$_{1-x}$$Ru$$_{x}$$O$$_{3}$$ (x = 1.0, 0.5) thin films by X-ray magnetic circular dichroism (XMCD) and hard X-ray photoemission spectroscopy (HXPES). The XMCD studies indicated that the spin moments of Mn and Ru are aligned in the opposite directions. The HXPES spectra indicated the Ru 4d states at around the Fermi edge (E$$_{F}$$) and the Mn 3d states below E$$_{F}$$. From these results, we propose that the localized Mn 3d t$$_{2g}$$ states and the itinerant Ru 4d t$$_{2g}$$ band are antiferromagnetically coupled and give rise to ferromagnetism, in analogy with the mechanism proposed for the double perovskite oxides such as Sr$$_{2}$$FeMoO$$_{6}$$.

Journal Articles

High-resolution photoemission study of Ce$$_{1-x}$$La$$_{x}$$RhAs; A Collapse of the energy gap in the Kondo semiconductor

Shimada, Kenya*; Higashiguchi, Mitsuharu*; Fujimori, Shinichi; Saito, Yuji; Fujimori, Atsushi; Namatame, Hirofumi*; Taniguchi, Masaki*; Sasakawa, Tetsuya*; Takabatake, Toshiro*

Physica B; Condensed Matter, 383(1), p.140 - 141, 2006/08

https://doi.org/10.1016/j.physb.2006.03.081
 Times Cited Count：1 Percentile：6.61(Physics, Condensed Matter)

High-resolution resonance-photoemission spectroscopy has been performed on the Ce$$_{1-x}$$La$$_{x}$$RhAs (0$$leq$$x$$leq$$0.05) single crystal to elucidate a collapse of the energy gap in the Kondo semiconductor CeRhAs by La substitution. With increasing x, the spectral intensity of the Ce 4f$$^{1}$$ derived states near the Fermi level decreases and new 4f derived spectral feature appears at a higher binding energy. The Rh 4d-derived states, on the other hand, are not significantly changed by the substitution. New 4f-derived states have incoherent nature, which is responsible for the collapse of the semiconducting state for x$$>$$$$sim$$0.02.

Journal Articles

Direct observation of a quasiparticle band in CeIrIn$$_5$$; An Angle-resolved photoemission spectroscopy study

Fujimori, Shinichi; Fujimori, Atsushi; Shimada, Kenya*; Narimura, Takamasa*; Kobayashi, Kenichi*; Namatame, Hirofumi*; Taniguchi, Masaki*; Harima, Hisatomo*; Shishido, Hiroaki*; Ikeda, Shugo; et al.

Physical Review B, 73(22), p.224517_1 - 224517_5, 2006/06

https://doi.org/10.1103/PhysRevB.73.224517
 Times Cited Count：45 Percentile：83.30(Materials Science, Multidisciplinary)

We have performed a high-resolution angle resolved Ce 4$$d$$-4$$f$$ resonant photoemission experiment on the heavy fermion superconductor CeIrIn$$_5$$. We have observed a quasi-particle band which has a energy disepersion of $$sim$$ 30 meV in the Ce 4$$f$$ on-resonance spectra. The result suggests that although the Ce 4$$f$$ spectra are dominated by the localized/correlated character being dominant, the small itinerant component is responsible for the superconductivity in this compound.

Journal Articles

High-resolution photoemission study of CeRhX (X=Sn, In)

Shimada, Kenya*; Namatame, Hirofumi*; Taniguchi, Masaki*; Higashiguchi, Mitsuharu*; Fujimori, Shinichi; Saito, Yuji; Fujimori, Atsushi; Kim, M. S.*; Hirata, Daisuke*; Takabatake, Toshiro*

Physica B; Condensed Matter, 378-380, p.791 - 792, 2006/05

https://doi.org/10.1016/j.physb.2006.01.289
 Times Cited Count：4 Percentile：22.69(Physics, Condensed Matter)

The Ce 4f-derived states in CeRhX (X=Sn and In) were directly examined by means of high-resolution 3d-4f resonance photoemission spectroscopy. Compared with the Kondo metal CePtSn, which has a low Kondo temperature, CeRhX has a strong Ce 4f$$^{1}$$ weight near the Fermi level ($$E$$$$_{rm F}$$) and has a weak Ce 4f$$^{0}$$ peak, indicating a strong valence fluctuation. The Ce 4f$$^{1}$$ spectral features indicate that the c-f hybridization strength in CeRhSn is weaker than that in CeRhIn.

Oral presentation

Electronic and magnetic properties of CaMn$$_{1-x}$$Ru$$_x$$O$$_3$$ thin films

Terai, Kota; Okane, Tetsuo; Takeda, Yukiharu; Fujimori, Shinichi; Saito, Yuji; Inami, Toshiya; Yamagami, Hiroshi; Kobayashi, Keisuke*; Shimada, Kenya*; Arita, Masashi*; et al.

no journal, , 

no abstracts in English

Oral presentation

Photoemission studies on heavy fermion superconductors

Fujimori, Shinichi; Saito, Yuji; Okane, Tetsuo; Yamagami, Hiroshi; Fujimori, Atsushi*; Shimada, Kenya*; Namatame, Hirofumi*; Taniguchi, Masaki*; Aoki, Dai*; Ikeda, Shugo*; et al.

no journal, , 

no abstracts in English

Oral presentation

Soft X-ray magnetic circular dichroism study of the ferromagnetism in CaMn$$_{1-x}$$Ru$$_{x}$$O$$_{3}$$

Terai, Kota; Okane, Tetsuo; Takeda, Yukiharu; Fujimori, Shinichi; Saito, Yuji; Yoshii, Kenji; Owada, Kenji; Inami, Toshiya; Arita, Masashi*; Shimada, Kenya*; et al.

no journal, , 

no abstracts in English

Oral presentation

Soft-hard X-ray photoemission study of Ce-based Kondo semiconductor

Takeda, Yukiharu; Fujimori, Shinichi; Okane, Tetsuo; Saito, Yuji; Yamagami, Hiroshi; Kobayashi, Keisuke*; Inami, Toshiya; Owada, Kenji; Arita, Masashi*; Shimada, Kenya*; et al.

no journal, , 

no abstracts in English

16 (Records 1-16 displayed on this page)
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