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Journal Articles

Critical slowing-down and field-dependent paramagnetic fluctuations in the skyrmion host EuPtSi; $$mu$$SR and NMR studies

Higa, Nonoka*; Ito, Takashi; Yogi, Mamoru*; Hattori, Taisuke; Sakai, Hironori; Kambe, Shinsaku; Guguchia, Z.*; Higemoto, Wataru; Nakashima, Miho*; Homma, Yoshiya*; et al.

Physical Review B, 104(4), p.045145_1 - 045145_7, 2021/07

https://doi.org/10.1103/PhysRevB.104.045145
 Times Cited Count：0 Percentile：0(Materials Science, Multidisciplinary)

Journal Articles

Magnetic fluctuation and first-order transition in trillium lattice of EuPtSi observed by $$^{151}$$Eu M$"o$ssbauer spectroscopy

Homma, Yoshiya*; Kakihana, Masashi*; Tokunaga, Yo; Yogi, Mamoru*; Nakashima, Miho*; Nakamura, Ai*; Shimizu, Yusei*; Li, D.*; Maurya, A.*; Sato, Yoshiki*; et al.

Journal of the Physical Society of Japan, 88(9), p.094702_1 - 094702_8, 2019/08

https://doi.org/10.7566/JPSJ.88.094702
 Times Cited Count：9 Percentile：59.53(Physics, Multidisciplinary)

Journal Articles

$$^{195}$$Pt-NMR study on noncentrosymmetric heavy-fermion superconductor CePt$$_3$$Si

Yogi, Mamoru*; Kitaoka, Yoshio*; Hashimoto, Shin*; Yasuda, Takashi*; Settai, Rikio*; Matsuda, Tatsuma; Haga, Yoshinori; Onuki, Yoshichika; Rogl, P.*; Bauer, E.*

Journal of Physics and Chemistry of Solids, 67(1-3), p.522 - 524, 2006/01

https://doi.org/10.1016/j.jpcs.2005.10.070
 Times Cited Count：9 Percentile：41.55(Chemistry, Multidisciplinary)

We report on magnetic and novel superconducting properties in heavy-fermion (HF) noncentrosymmetric compound CePt$$_3$$Si via the measurement of $$^{195}$$Pt nuclear spin-lattice relaxation rate 1/$$T$$$$_1$$. This compound reveals the uniform coexistence of antiferromagnetism ($$T_{rm N}$$ =2.2 K) and superconductivity ($$T_{rm c}$$ =0.75 K). CePt$$_3$$Si is the first HF superconductor that reveals a peak in 1/$$T$$$$_1$$ just below $$T_{rm c}$$ and, additionally, does not follow the $$T^3$$ law that was observed for most unconventional HF superconductors. The novel relaxation behavior found below $$T_{rm c}$$ may be relevant with a possible novel SC state being realized in the noncentrosymmetric CePt$$_3$$Si.

Journal Articles

Evidence for novel pairing state in noncentrosymmetric superconductor CePt$$_3$$Si; $$^{29}$$Si-NMR Knight shift study

Yogi, Mamoru*; Mukuda, Hidekazu*; Kitaoka, Yoshio*; Hashimoto, Shin*; Yasuda, Takashi*; Settai, Rikio*; Matsuda, Tatsuma; Haga, Yoshinori; Onuki, Yoshichika; Rogl, P.*; et al.

Journal of the Physical Society of Japan, 75(1), p.013709_1 - 013709_4, 2006/01

https://doi.org/10.1143/JPSJ.75.013709
 Times Cited Count：64 Percentile：88.17(Physics, Multidisciplinary)

We report the measurements of the $$^{29}$$Si Knight shift $$^{29}$$K$$_s$$ on the noncentrosymmetric heavy-fermion compound CePt$$_3$$Si in which antiferromagnetism (AFM) with $$T_N$$=2.2 K coexists with superconductivity (SC) with $$T_c$$=0.75 K. Its spin part $$^{29}$$K$$_s$$, which is deduced to be K$$_{sc}$$$$>$$0.11 and 0.16 at respective magnetic fields H=2.0061 and 0.8671 T,. does not decrease across the superconducting transition temperature Tc for the field along the c-axis. The temperature dependence of nuclear spin-lattice relaxation of $$^{195}$$Pt below Tc has been accounted for by a Cooper pairing model with a two-component order parameter composed of spin-singlet and spin-triplet pairing components. From this result, it is shown that the Knight-shift data are consistent with the occurrence of the two-component order parameter for CePt$$_3$$Si.

JAEA Reports

Feasibility Study on Commercialization of Fast Breeder Reactor Cycle Systems Interim Report of Phase II; Technical Study Report for Reactor Plant Systems

Konomura, Mamoru; Ogawa, Takashi; Okano, Yasushi; Yamaguchi, Hiroyuki; Murakami, Tsutomu; Takaki, Naoyuki; Nishiguchi, Youhei; Sugino, Kazuteru; Naganuma, Masayuki; Hishida, Masahiko; et al.

JNC TN9400 2004-035, 2071 Pages, 2004/06

JNC-TN9400-2004-035.pdf:76.42MB

The attractive concepts for Sodium-, lead-bismuth-, helium- and water-cooled FBRs have been created through using typical plant features and employing advanced technologies. Efforts on evaluating technological prospects of feasibility have been paid for these concepts. Also, it was comfirmed if these concepts satisfy design requierments of capability and performance presumed in the feasibilty study on commertialization of Fast Breeder Reactor Systems. As results, it was concluded that the selection of sodium-cooled reactor was most rational for practical use of FBR technologies in 2015.

Journal Articles

Nuclide composition benchmark data set for verifying burnup codes on spent light water reactor fuels

Nakahara, Yoshinori; Suyama, Kenya; Inagawa, Jun; Nagaishi, Ryuji; Kurosawa, Setsumi; Kono, Nobuaki; Onuki, Mamoru; Mochizuki, Hiroki*

Nuclear Technology, 137(2), p.1 - 16, 2002/02

no abstracts in English

6 (Records 1-6 displayed on this page)
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