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Journal Articles

Field-induced anomaly in the anisotropic non-Fermi-liquid normal state of UBe$$_{13}$$

Shimizu, Yusei*; Kittaka, Shunichiro*; Kono, Yohei*; Nakamura, Shota*; Haga, Yoshinori; Yamamoto, Etsuji; Machida, Kazushige*; Amitsuka, Hiroshi*; Sakakibara, Toshiro*

Physical Review B, 112(24), p.245157_1 - 245157_10, 2025/12

https://doi.org/10.1103/bxq6-tznr
 Times Cited Count：0 Percentile：0.00(Materials Science, Multidisciplinary)

Journal Articles

Observation of field-induced single-ion magnetic anisotropy in a multiorbital Kondo alloy (Lu,Yb)Rh$$_2$$Zn$$_{20}$$

Kitazawa, Takafumi; Ikeda, Yoichi*; Sakakibara, Toshiro*; Matsuo, Akira*; Shimizu, Yusei*; Tokunaga, Yo; Haga, Yoshinori; Kindo, Koichi*; Nambu, Yusuke*; Ikeuchi, Kazuhiko*; et al.

Physical Review B, 108(8), p.085105_1 - 085105_7, 2023/08

https://doi.org/10.1103/PhysRevB.108.085105
 Times Cited Count：1 Percentile：0.00(Materials Science, Multidisciplinary)

Journal Articles

Slow magnetic relaxation of linear trinuclear M(II)-Gd(III)-M(II) complexes with $$D_{3}$$ point group symmetry (M(II) = Zn(II) and Mg(II))

Masuda, Yuka*; Sakata, Shiomi*; Kayahara, Saori*; Irie, Natsumi*; Kofu, Maiko; Kono, Yohei*; Sakakibara, Toshiro*; Horii, Yoji*; Kajiwara, Takashi*

Journal of Physical Chemistry C, 127(6), p.3295 - 3306, 2023/02

https://doi.org/10.1021/acs.jpcc.2c08323
 Times Cited Count：6 Percentile：35.54(Chemistry, Physical)

Journal Articles

Spin glass behavior and magnetic boson peak in a structural glass of a magnetic ionic liquid

Kofu, Maiko; Watanuki, Ryuta*; Sakakibara, Toshiro*; Kawamura, Seiko; Nakajima, Kenji; Matsuura, Masato*; Ueki, Takeshi*; Akutsu, Kazuhiro*; Yamamuro, Osamu*

Scientific Reports (Internet), 11, p.12098_1 - 12098_8, 2021/06

https://doi.org/10.1038/s41598-021-91619-z
 Times Cited Count：11 Percentile：61.15(Multidisciplinary Sciences)

Journal Articles

Emergent spin-1 Haldane gap and ferroelectricity in a frustrated spin-$$frac{1}{2}$$ ladder

Ueda, Hiroshi*; Onoda, Shigeki*; Yamaguchi, Yasuhiro*; Kimura, Tsuyoshi*; Yoshizawa, Daichi*; Morioka, Toshiaki*; Hagiwara, Masayuki*; Hagihara, Masato*; Soda, Minoru*; Masuda, Takatsugu*; et al.

Physical Review B, 101(14), p.140408_1 - 140408_6, 2020/04

https://doi.org/10.1103/PhysRevB.101.140408
 Times Cited Count：6 Percentile：25.56(Materials Science, Multidisciplinary)

Journal Articles

Single crystal growth and unique electronic states of cubic chiral EuPtSi and related compounds

Onuki, Yoshichika*; Kakihana, Masashi*; Iha, Wataru*; Nakaima, Kenri*; Aoki, Dai*; Nakamura, Ai*; Honda, Fuminori*; Nakashima, Miho*; Amako, Yasushi*; Gochi, Jun*; et al.

JPS Conference Proceedings (Internet), 29, p.012001_1 - 012001_9, 2020/02

https://doi.org/10.7566/JPSCP.29.012001

Journal Articles

Heavy fermion state of YbNi$$_2$$Si$$_3$$ without local inversion symmetry

Nakamura, Shota*; Hyodo, Kazushi*; Matsumoto, Yuji*; Haga, Yoshinori; Sato, Hitoshi*; Ueda, Shigenori*; Mimura, Kojiro*; Saiki, Katsuyoshi*; Iso, Kosei*; Yamashita, Minoru*; et al.

Journal of the Physical Society of Japan, 89(2), p.024705_1 - 024705_5, 2020/02

https://doi.org/10.7566/JPSJ.89.024705
 Times Cited Count：2 Percentile：15.74(Physics, Multidisciplinary)

Journal Articles

Magnetization study on the Ising ferromagnet URhGe with high-precision angle-resolved magnetic field near the hard axis

Nakamura, Shota*; Sakakibara, Toshiro*; Shimizu, Yusei*; Kittaka, Shunichiro*; Kono, Yohei*; Haga, Yoshinori; Pospisil, J.; Yamamoto, Etsuji

Progress in Nuclear Science and Technology (Internet), 5, p.123 - 127, 2018/11

https://doi.org/10.15669/pnst.5.123

Journal Articles

Evidence for chiral $$d$$-wave superconductivity in URu$$_2$$Si$$_2$$ from the field-angle variation of its specific heat

Kittaka, Shunichiro*; Shimizu, Yusei*; Sakakibara, Toshiro*; Haga, Yoshinori; Yamamoto, Etsuji; Onuki, Yoshichika; Tsutsumi, Yasumasa*; Nomoto, Takuya*; Ikeda, Hiroaki*; Machida, Kazushige*

Journal of the Physical Society of Japan, 85(3), p.033704_1 - 033704_4, 2016/03

https://doi.org/10.7566/JPSJ.85.033704
 Times Cited Count：37 Percentile：82.54(Physics, Multidisciplinary)

Journal Articles

The Spin chirality and ferroelectricity on a triangular lattice antiferromagnet

Mitamura, Hiroyuki*; Watanuki, Ryuta*; Kaneko, Koji; Sakakibara, Toshiro*

Kotai Butsuri, 50(12), p.821 - 832, 2015/12

no abstracts in English

Journal Articles

Field-orientation dependence of low-energy quasiparticle excitations in the heavy-electron superconductor UBe$$_{13}$$

Shimizu, Yusei*; Kittaka, Shunichiro*; Sakakibara, Toshiro*; Haga, Yoshinori; Yamamoto, Etsuji; Amitsuka, Hiroshi*; Tsutsumi, Yasumasa*; Machida, Kazushige*

Physical Review Letters, 114(14), p.147002_1 - 147002_6, 2015/04

https://doi.org/10.1103/PhysRevLett.114.147002
 Times Cited Count：34 Percentile：81.13(Physics, Multidisciplinary)

Journal Articles

Spin-chirality-driven ferroelectricity on a perfect triangular lattice antiferromagnet

Mitamura, Hiroyuki*; Watanuki, Ryuta*; Kaneko, Koji; Onozaki, Norimichi*; Amo, Yuta*; Kittaka, Shunichiro*; Kobayashi, Riki*; Shimura, Yasuyuki*; Yamamoto, Isao*; Suzuki, Kazuya*; et al.

Physical Review Letters, 113(14), p.147202_1 - 147202_5, 2014/10

https://doi.org/10.1103/PhysRevLett.113.147202
 Times Cited Count：29 Percentile：77.06(Physics, Multidisciplinary)

Journal Articles

Anomalous field-angle dependence of the specific heat of heavy-fermion superconductor UPt$$_3$$

Kittaka, Shunichiro*; An, Koji*; Sakakibara, Toshiro*; Haga, Yoshinori; Yamamoto, Etsuji; Kimura, Noriaki*; Onuki, Yoshichika; Machida, Kazushige*

Journal of the Physical Society of Japan, 82(2), p.024707_1 - 024707_5, 2013/02

https://doi.org/10.7566/JPSJ.82.024707
 Times Cited Count：12 Percentile：57.89(Physics, Multidisciplinary)

Journal Articles

The Unconventional superconductivity of skutterudite PrOs$$_4$$Sb$$_{12}$$; Time-reversal symmetry breaking and adjacent field-induced quadrupole ordering

Aoki, Yuji*; Tayama, Takashi*; Sakakibara, Toshiro*; Kuwahara, Keitaro*; Iwasa, Kazuaki*; Kogi, Masafumi*; Higemoto, Wataru; MacLaughlin, D. E.*; Sugawara, Hitoshi*; Sato, Hideyuki*

Journal of the Physical Society of Japan, 76(5), p.051006_1 - 051006_13, 2007/05

https://doi.org/10.1143/JPSJ.76.051006
 Times Cited Count：65 Percentile：55.92(Physics, Multidisciplinary)

This review presents a summary and evaluation of the experimental properties of unconventional superconductivity in PrOs$$_4$$Sb$$_{12}$$. After a brief introduction of filled skutterudites, we argue that the normal-state properties of PrOs$$_4$$Sb$$_{12}$$ are quite different from ordinary heavy-fermion superconductors.

Oral presentation

Spin glass in a structural glass of a magnetic ionic liquid C$$_{4}$$mimFeCl$$_{4}$$

Kofu, Maiko; Watanuki, Ryuta*; Sakakibara, Toshiro*; Kawamura, Seiko; Nakajima, Kenji; Ueki, Takeshi*; Akutsu, Kazuhiro*; Yamamuro, Osamu*

no journal, , 

no abstracts in English

Oral presentation

Spin glass on a structural glass of a magnetic ionic liquid

Kofu, Maiko; Watanuki, Ryuta*; Sakakibara, Toshiro*; Kawamura, Seiko; Nakajima, Kenji; Ueki, Takeshi*; Akutsu, Kazuhiro*; Yamamuro, Osamu*

no journal, , 

Ionic liquids (ILs) have been in the spotlight due to their unique and interesting properties. It is remarkable that their physicochemical properties are controlled by varying cations and anions. Magnetic IL is an example. The first discovered magnetic IL C$$_{4}$$mimFeCl$$_{4}$$ is easily vitrified upon cooling and also crystallized by annealing. Interestingly, an antiferromagnetic transition occurs at 2.3 K in the crystalline state while spin-glass behavior is observed below 0.45 K (= $$T_{rm SG}$$) in the glassy state. Our inelastic neutron scattering experiments have demonstrated that the glassy C$$_{4}$$mimFeCl$$_{4}$$ exhibits a broad and non-dispersive excitation, while the crystal displays spin-wave excitations. The excitation spectrum in the glass state is scaled by the Bose population factor below $$T_{rm SG}$$, which is highly reminiscent of "boson peak" commonly observed in structural glasses. Since there is no periodicity in structural glasses, magnons hardly propagate through magnetic medium and are localized. The localized magnetic excitations are suggestive of the formation of spin cluster.

Oral presentation

Magnetic behavior and magnetic structure of CuO$$_{2}$$ ribbon system A$$_{2}$$Cu$$_{2}$$Mo$$_{3}$$O$$_{12}$$ (A=Rb, Cs)

Fujimura, Akio*; Yasui, Yukio*; Kono, Yohei*; Kittaka, Shunichiro*; Sakakibara, Toshiro*; Igawa, Naoki; Matsukawa, Takeshi*; Yoshida, Yukihiko*; Hoshikawa, Akinori*; Ishigaki, Toru*

no journal, , 

The magnetic behavior and magnetic structure of A$$_{2}$$Cu$$_{2}$$Mo$$_{3}$$O$$_{12}$$ (A=Rb, Cs) with CuO$$_{2}$$ ribbon chains have been studied by using specific heat measurement and neutron diffraction method. Cs$$_{2}$$Cu$$_{2}$$Mo$$_{3}$$O$$_{12}$$ showed collinear-antiferromagnetic structure analyzed by the neutron diffraction. The relation between magnetic behavior and magnetic for those materials are discussed.

Oral presentation

Neutron scattering study of a magnetic ionic liquid C$$_{4}$$mimFeCl$$_{4}$$

Kofu, Maiko; Watanuki, Ryuta*; Sakakibara, Toshiro*; Kawamura, Seiko; Nakajima, Kenji; Ueki, Takeshi*; Akutsu, Kazuhiro*; Yamamuro, Osamu*

no journal, , 

Ionic liquids (ILs) have been in the spotlight due to their unique and interesting properties. It is remarkable that their physicochemical properties are controlled by varying cations and anions. Magnetic IL is an example. The first discovered magnetic IL C$$_{4}$$mimFeCl$$_{4}$$ is easily vitrified upon cooling and also crystallized by annealing. Interestingly, an antiferromagnetic transition occurs at 2.3 K in the crystalline state while spin-glass behavior is observed below 0.45 K (= $$T_{rm SG}$$) in the glassy state. Our inelastic neutron scattering experiments have demonstrated that the glassy C$$_{4}$$mimFeCl$$_{4}$$ exhibits a broad and non-dispersive excitation, while the crystal displays spin-wave excitations. The excitation spectrum in the glass state is scaled by the Bose population factor below $$T_{rm SG}$$, which is highly reminiscent of "boson peak" commonly observed in structural glasses. We guess that, since there is no periodicity in structural glasses, magnons hardly propagate through magnetic medium and are localized.

Oral presentation

Spin glass dynamics in a structural glass of C$$_{4}$$mimFeCl$$_{4}$$

Kofu, Maiko; Watanuki, Ryuta*; Sakakibara, Toshiro*; Kawamura, Seiko; Nakajima, Kenji; Ueki, Takeshi*; Akutsu, Kazuhiro*; Yamamuro, Osamu*

no journal, , 

Ionic liquids (ILs) have been in the spotlight due to their unique and interesting properties. It is remarkable that their physicochemical properties are controlled by varying cations and anions. Magnetic IL is an example. The first discovered magnetic IL C$$_{4}$$mimFeCl$$_{4}$$ is easily vitrified upon cooling and also crystallized by annealing. Interestingly, an antiferromagnetic transition occurs at 2.3 K in the crystalline state while spin-glass behavior is observed below 0.45 K (= $$T_{rm SG}$$) in the glassy state. Our inelastic neutron scattering experiments have demonstrated that the glassy C$$_{4}$$mimFeCl$$_{4}$$ exhibits a broad and non-dispersive excitation, while the crystal displays spin-wave excitations. The excitation spectrum in the glass state is scaled by the Bose population factor below $$T_{rm SG}$$, which is highly reminiscent of "boson peak" commonly observed in structural glasses. We guess that, since there is no periodicity in structural glasses, magnons hardly propagate through magnetic medium and are localized. The localized magnetic excitations are suggestive of the formation of spin clusters.

Oral presentation

Neutron scattering study of spin dynamics in spin glasses

Kofu, Maiko; Yamamuro, Osamu*; Watanuki, Ryuta*; Sakakibara, Toshiro*; Kawamura, Seiko; Murai, Naoki; Nakajima, Kenji; Matsuura, Masato*; Ueki, Takeshi*; Akutsu, Kazuhiro*; et al.

no journal, , 

no abstracts in English

Oral presentation

Magnetic phase diagrams of Cs$$_{2}$$Cu$$_{2}$$Mo$$_{3}$$O$$_{12}$$ below 2 K with CuO$$_{2}$$ ribbon chains

Fujimura, Akio*; Yasui, Yukio*; Igawa, Naoki; Yoshida, Yukihiko*; Ishigaki, Toru*; Kono, Yohei*; Kittaka, Shunichiro*; Sakakibara, Toshiro*

no journal, , 

Magnetic phase diagram was investigated by the specific heat measurement and magnetic structure has been studied by using neutron diffraction for Cs$$_{2}$$Cu$$_{2}$$Mo$$_{3}$$O$$_{12}$$ with CuO$$_{2}$$ ribbon chains. We found that this material showed antiferromagnetic transition at T$$_{N}$$ = 1.85 K under 0 magnetic field. The difference in magnetic and crystal structure between Cs$$_{2}$$Cu$$_{2}$$Mo$$_{3}$$O$$_{12}$$ and Rb$$_{2}$$Cu$$_{2}$$Mo$$_{3}$$O$$_{12}$$ are discussed.

21 (Records 1-20 displayed on this page)