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Journal Articles

$$^{149}$$Sm synchrotron-radiation-based M$"{o}$ssbauer and $$mu^+$$SR studies of Sm$$_3$$Ru$$_4$$Ge$$_{13}$$

Tsutsui, Satoshi; Ito, Takashi; Nakamura, Jin*; Yoshida, Mio*; Kobayashi, Yoshio*; Yoda, Yoshitaka*; Nakamura, Jumpei*; Koda, Akihiro*; Higashinaka, Ryuji*; Aoki, Dai*; et al.

Interactions (Internet), 245(1), p.55_1 - 55_9, 2024/12

https://doi.org/10.1007/s10751-024-01900-6

Journal Articles

$$^{149}$$Sm synchrotron-radiation-based M$"{o}$ssbauer spectroscopy of Sm-based heavy fermion compounds

Tsutsui, Satoshi; Higashinaka, Ryuji*; Mizumaki, Masaichiro*; Kobayashi, Yoshio*; Nakamura, Jin*; Ito, Takashi; Yoda, Yoshitaka*; Matsuda, Tatsuma*; Aoki, Yuji*; Sato, Hideyuki*

Interactions (Internet), 245(1), p.9_1 - 9_10, 2024/12

https://doi.org/10.1007/s10751-024-01851-y

Journal Articles

Investigation of the phonon dispersion associated with superlattice reflections in the BiS$$_{2}$$-based superconductor LaBiS$$_{2}$$O$$_{0.5}$$F$$_{0.5}$$

Tamatsukuri, Hiromu; Hasegawa, Takumi*; Sagayama, Hajime*; Mizumaki, Masaichiro*; Murakami, Yoichi*; Kajitani, Joe*; Higashinaka, Ryuji*; Matsuda, Tatsuma*; Aoki, Yuji*; Tsutsui, Satoshi*

Physical Review B, 107(2), p.024303_1 - 024303_8, 2023/01

https://doi.org/10.1103/PhysRevB.107.024303
 Times Cited Count：0 Percentile：0.00(Materials Science, Multidisciplinary)

Journal Articles

Sm valence determination of Sm-based intermetallics using $$^{149}$$Sm M$"{o}$ssbauer and Sm L$$_{rm III}$$-edge X-ray absorption spectroscopies

Tsutsui, Satoshi; Higashinaka, Ryuji*; Nakamura, Raito*; Fujiwara, Kosuke*; Nakamura, Jin*; Kobayashi, Yoshio*; Ito, Takashi; Yoda, Yoshitaka*; Kato, Kazuo*; Nitta, Kiyofumi*; et al.

Hyperfine Interactions, 242(1), p.32_1 - 32_10, 2021/12

https://doi.org/10.1007/s10751-021-01759-x
 Times Cited Count：1 Percentile：81.31(Physics, Atomic, Molecular & Chemical)

Journal Articles

Magnetic, thermal, and neutron diffraction studies of a coordination polymer; bis(glycolato)cobalt(II)

Nakane, Tomohiro*; Yoneyama, Shota*; Kodama, Takeshi*; Kikuchi, Koichi*; Nakao, Akiko*; Ohara, Takashi; Higashinaka, Ryuji*; Matsuda, Tatsuma*; Aoki, Yuji*; Fujita, Wataru*

Dalton Transactions (Internet), 48(1), p.333 - 338, 2019/01

https://doi.org/10.1039/C8DT04358B
 Times Cited Count：2 Percentile：9.93(Chemistry, Inorganic & Nuclear)

Journal Articles

Anharmonic Pr guest modes in Pr(Os$$_{1-x}$$Ru$$_x$$)$$_4$$Sb$$_{12}$$ investigated by inelastic X-ray scattering

Tsutsui, Satoshi; Kaneko, Koji; Miyazaki, Ryoichi*; Higashinaka, Ryuji*; Aoki, Yuji*; Kobayashi, Riki*; Wakimoto, Shuichi; Baron, A. Q. R.*; Sugawara, Hitoshi*; Sato, Hideyuki*

JPS Conference Proceedings (Internet), 3, p.011060_1 - 011060_5, 2014/06

https://doi.org/10.7566/JPSCP.3.011060

Journal Articles

Magnetic-field-induced charge order in the filled skutterudite SmRu$$_{4}$$P$$_{12}$$; Evidence from resonant and nonresonant X-ray diffraction

Matsumura, Takeshi*; Michimura, Shinji*; Inami, Toshiya; Hayashi, Yuya*; Fushiya, Kengo*; Matsuda, Tatsuma*; Higashinaka, Ryuji*; Aoki, Yuji*; Sugawara, Hitoshi*

Physical Review B, 89(16), p.161116_1 - 161116_5, 2014/04

https://doi.org/10.1103/PhysRevB.89.161116
 Times Cited Count：15 Percentile：53.13(Materials Science, Multidisciplinary)

The antiferromagnetic ordered phase below $$T_{rm MI}$$ = 16.5 K and the unresolved intermediate phase between $$T_{rm MI}$$ and $$T^*$$ (= 14 K) in SmRu$$_4$$P$$_{12}$$ have been studied by resonant and nonresonant X-ray diffraction. In the intermediate phase, nonresonant Thomson scattering with $$q$$ = (1,0,0) is induced by applying a magnetic field. This phenomena is caused by atomic displacements reflecting the charge order in the $$p$$ band, as predicted theoretically. Simultaneously, the antiferromagnetic moment of Sm is enhanced along the field direction, which is considered to reflect the staggered ordering of the $$Gamma_7$$ - $$Gamma_8$$ crystal-field states. The present results show that the orbital-dependent $$p$$ - $$f$$ hybridization in association with the nesting instability in the $$p$$ band gives rise to the unconventional charge order similarly with PrRu$$_4$$P$$_{12}$$ and PrFe$$_4$$P$$_{12}$$.

Oral presentation

$$mu$$SR studies on Nd(O$$_{1-x}$$F$$_x$$)BiS$$_2$$

Higemoto, Wataru; Ito, Takashi; Oshima, Kohei*; Mita, Masaaki*; Higashinaka, Ryuji*; Matsuda, Tatsuma*; Aoki, Yuji*

no journal, , 

no abstracts in English

Oral presentation

NMR study of heavy fermion SmAu$$_{3}$$Al$$_{7}$$, 2

Kambe, Shinsaku; Sakai, Hironori; Tokunaga, Yo; Haga, Yoshinori; Masuda, Hayato*; Higashinaka, Ryuji*; Matsuda, Tatsuma*; Aoki, Yuji*

no journal, , 

no abstracts in English

Oral presentation

NMR study of heavy fermion SmAu$$_{3}$$Al$$_{7}$$, 3

Kambe, Shinsaku; Sakai, Hironori; Tokunaga, Yo; Haga, Yoshinori; Masuda, Hayato*; Higashinaka, Ryuji*; Matsuda, Tatsuma*; Aoki, Yuji*

no journal, , 

SmAu$$_{3}$$Al$$_{7}$$ exhibits antiferromagnetic order near 2.8 K at atmospheric pressure. The specific heat C/T is a heavy electron system with a low temperature of 2J/molK$$^{2}$$ or more. This heavy electronic state is insensitive to magnetic field. In particular, this compound is characterized in that the heavy electronic state depends on the magnetic field direction. However, it is also interesting that the valence of Sm does not seem to be mixed valance state only in 3+ state according to XAS. Therefore, in this study, we attempted to estimate the temperature and magnetic field direction dependence of magnetic fluctuations using Al-NMR. This time, we discuss spin lattice relaxation time.

Oral presentation

Al-NMR in SmAu$$_{3}$$Al$$_{7}$$

Kambe, Shinsaku; Sakai, Hironori; Tokunaga, Yo; Haga, Yoshinori; Masuda, Hayato*; Higashinaka, Ryuji*; Matsuda, Tatsuma*; Aoki, Yuji*

no journal, , 

no abstracts in English

Oral presentation

Novel quantum critical behavior in LnO$$_{1-x}$$F$$_x$$BiS$$_2$$ (Ln = Ce, Nd)

Higemoto, Wataru; Ito, Takashi; Ooshima, Kohei; Higashinaka, Ryuji*; Matsuda, Tatsuma*; Aoki, Yuji*

no journal, , 

no abstracts in English

Oral presentation

$$mu$$SR studies on Ln(O$$_{1-x}$$F$$_x$$)BiS$$_2$$ (Ln=Ce,Nd) under a magnetic field

Higemoto, Wataru; Ito, Takashi; Ooshima, Kohei; Okazawa, Takeshi*; Tomono, Dai*; Mihara, Mototsugu*; Mita, Masaaki*; Higashinaka, Ryuji*; Matsuda, Tatsuma*; Aoki, Yuji*

no journal, , 

no abstracts in English

Oral presentation

$$mu$$SR study on Ce(O$$_{1-x}$$F$$_x$$)BiS$$_2$$

Higemoto, Wataru; Ito, Takashi; Asano, Takuya*; Higashinaka, Ryuji*; Matsuda, Tatsuma*; Aoki, Yuji*

no journal, , 

Recently, it was discovered that relatively high superconducting transition temperature, T$$_csim$$10K, in layered structural system Ln(O$$_{1-x}$$F$$_x$$)BiS$$_2$$ and many studies have been carried out to clarify the nature of its superconductivity. In some system, novel behaviors were reported. For example, in Ce(O$$_{1-x}$$F$$_x$$)BiS$$_2$$ with x=0.5, superconductivity and ferromagnetism observed simultaneously. Meanwhile, in x=0 system, Kondo like behavior in temperature dependence of the specific heat without carrier was found. To clarify these behaviors, we are studying Ce(O$$_{1-x}$$F$$_x$$)BiS$$_2$$ by using $$mu$$SR technique and found that ferromagnetism is not intrinsic behavior.

Oral presentation

Muon spin relaxation in PrRu$$_4$$P$$_{12}$$

Higemoto, Wataru; Ito, Takashi; Ninomiya, Kazuhiko*; Higashinaka, Ryuji*; Aoki, Yuji*; Sato, Hideyuki*

no journal, , 

In filled skutterudite structural system PrRu$$_4$$P$$_{12}$$, many studies are paid attention on the electronic state of the Pr ion from several point of view, including multipole state. Recently, it was proposed that the complex state of nucleous spin of Pr and Pr 4f electron is formed and this complex state makes some effect on the properties of the system. We have studies muon spin relaxation experiment to elucidate the magnetic properties of PrRu$$_4$$P$$_{12}$$ down to low temperatures. We will report the detail of the results.

15 (Records 1-15 displayed on this page)
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