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Journal Articles

Field induced multiple superconducting phases in UTe along hard magnetic axis

Sakai, Hironori; Tokiwa, Yoshifumi; Opletal, P.; Kimata, Motoi*; Awaji, Satoshi*; Sasaki, Takahiko*; Aoki, Dai*; Kambe, Shinsaku; Tokunaga, Yo; Haga, Yoshinori

Physical Review Letters, 130(19), p.196002_1 - 196002_6, 2023/05

https://doi.org/10.1103/PhysRevLett.130.196002

Times Cited Count：5 Percentile：92.42(Physics, Multidisciplinary)

The superconducting (SC) phase diagram in uranium ditelluride is explored under magnetic fields () along the hard magnetic -axis using a high-quality single crystal with $T_{rm c}$ = 2.1 K. Simultaneous electrical resistivity and AC magnetic susceptibility measurements discern low- and high-field SC (LFSC and HFSC, respectively) phases with contrasting field-angular dependence. Crystal quality increases the upper critical field of the LFSC phase, but the $H^{ast}$ of T, at which the HFSC phase appears, is always the same through the various crystals. A phase boundary signature is also observed inside the LFSC phase near $H^{ast}$ , indicating an intermediate SC phase characterized by small flux pinning forces.

Journal Articles

Automated pulsed magnet system for neutron diffraction experiments at the Materials and Life Science Experimental Facility in J-PARC

Watanabe, Masao; Kihara, Takumi*; Nojiri, Hiroyuki*

Quantum Beam Science (Internet), 7(1), p.1_1 - 1_10, 2023/03

https://doi.org/10.3390/qubs7010001

A pulsed magnet system has been developed as a new user-friendly sample environment equipment at the Materials and Life Science Experimental Facility in Japan Proton Accelerator Research Complex. It comprises a vacuum chamber, a 4 K closed-cycle refrigerator for samples, and a nitrogen bath made of a stainless-steel tube with a miniature solenoidal coil. The coil is cooled by liquid nitrogen supplied by an automatic liquid nitrogen supply system, and the sample is cooled by a refrigerator. This combination facilitates the automatic high magnetic field diffraction measurement for the user's operation. A relatively large scattering angle is up to 42 degrees, which is significantly wider than the previous setup. Neutron diffraction experiments were performed on a multiferroic TbMnO $_{3}$ and the field dependence of the diffraction peaks was clearly observed. The new pulsed magnet system was established for a practical high magnetic field diffraction for the user program.

Journal Articles

Orbitally defined field-induced electronic state in a Kondo lattice

Lessux, G. G.*; Sakai, Hironori; Hattori, Taisuke*; Tokunaga, Yo; Kambe, Shinsaku; Kuhns, P. L.*; Reyes, A. P.*; Thompson, J. D.*; Pagliuso, P. G.*; Urbano, R. R.*

Physical Review B, 101(16), p.165111_1 - 165111_6, 2020/04

https://doi.org/10.1103/PhysRevB.101.165111

Times Cited Count：7 Percentile：44.34(Materials Science, Multidisciplinary)

CeRhIn is a Kondo-lattice prototype in which a magnetic field $B^{ast}$ 31T induces an abrupt Fermi-surface (FS) reconstruction and pronounced in-plane electrical transport anisotropy all within its antiferromagnetic state. Here we report low-temperature nuclear magnetic resonance (NMR) measurements revealing a pronounced decrease in the $^{115}$ In formal Knight shift, without changes in crystal or magnetic structures, of CeRhIn at fields () spanning $B^{ast}$ . We discuss the emergent state above $B^{ast}$ in terms of a change in Ce's 4 orbitals that arises from field-induced evolution of crystal-electric field (CEF) energy levels. This change in orbital character enhances hybridization between the 4 and the conduction electrons that leads ultimately to an itinerant quantum-critical point at $B_{c0}$ 50T.

Journal Articles

Nucleon and isobar in a strong magnetic field

Yakhshiev, U.*; Kim, H.-C.; Oka, Makoto

Physical Review D, 99(5), p.054027_1 - 054027_11, 2019/03

https://doi.org/10.1103/PhysRevD.99.054027

Times Cited Count：7 Percentile：40.94(Astronomy & Astrophysics)

We investigate Skyrmion solution of the chiral Lagrangian with magnetic field. We find that the Skyrmion is deformed in the magnetic field and its mass increases accordingly. The nucleon and isobar states are considered in the Skyrme model.

Journal Articles

High-field phase diagram of the heavy-fermion metal CeIn; Pulsed-field NMR study on single crystals up to 56 T

Tokunaga, Yo; Orlova, A.*; Bruyant, N.*; Aoki, Dai*; Mayaffre, H.*; Krmer, S.*; Julien, M.-H.*; Berthier, C.*; Horvati, M.*; Higa, Nonoka; et al.

Physical Review B, 99(8), p.085142_1 - 085142_5, 2019/02

https://doi.org/10.1103/PhysRevB.99.085142

Times Cited Count：6 Percentile：27.67(Materials Science, Multidisciplinary)

The heavy-fermion antiferromagnet CeIn exhibits a field-induced anomaly associated with Fermi surface reconstruction at 45 T, well below the antiferromagnetic (AFM) critical field that exceeds 60 T. In order to explore the origin of this anomaly, we have measured $^{115}$ In NMR spectra in pulsed magnetic fields up to 56 T using high-quality single crystals. To within experimental resolution, we do not detect any change in the NMR spectra that could suggest a modification in either the character of the hyperfine field or the electric field gradient at In sites through . This strongly suggests that the 45 T anomaly cannot be simply ascribed to a field-induced change in the magnetic structure of the AFM state.

Journal Articles

X-ray absorption spectroscopy in the heavy Fermion compound -YbAlB at high magnetic fields

Terashima, Taku*; Matsuda, Yasuhiro*; Kuga, Kentaro*; Suzuki, Shintaro*; Matsumoto, Yosuke*; Nakatsuji, Satoru*; Kondo, Akihiro*; Kindo, Koichi*; Kawamura, Naomi*; Mizumaki, Masaichiro*; et al.

Journal of the Physical Society of Japan, 84(11), p.114715_1 - 114715_4, 2015/11

https://doi.org/10.7566/JPSJ.84.114715

Times Cited Count：4 Percentile：34.89(Physics, Multidisciplinary)

Journal Articles

Synchrotron X-ray spectroscopy study on the valence state and magnetization in -YbAl $_{1-x}$ FeB () at low temperatures and high magnetic fields

Terashima, Taku*; Matsuda, Yasuhiro*; Kuga, Kentaro*; Suzuki, Shintaro*; Matsumoto, Yosuke*; Nakatsuji, Satoru*; Kondo, Akihiro*; Kindo, Koichi*; Kawamura, Naomi*; Mizumaki, Masaichiro*; et al.

Journal of Physics; Conference Series, 592(1), p.012020_1 - 012020_6, 2015/03

https://doi.org/10.1088/1742-6596/592/1/012020

Times Cited Count：1 Percentile：43.19(Physics, Atomic, Molecular & Chemical)

Valence fluctuation phenomena in rare-earth intermetallic compounds have attracted attention because the quantum criticality of the valence transition has been proposed theoretically. Recently, it was found that -YbAlB shows quantum criticality without tuning and has a strong mixed-valence state. In this study, we measured the magnetization curve and X-ray magnetoabsorption in -YbAl $_{1-x}$ FeB (), which is a locally isostructural polymorph of -YbAlB. The magnetization and X-ray experiments were performed in fields up to 55 and 40 T, respectively. A small increase in the Yb valence was observed at fields where the magnetization curve exhibited a change in slope.

Journal Articles

Field-induced ferromagnetic correlation in the metamagnetic crossover in CeRuSi as studied by neutron scattering

Sato, Masugu*; Koike, Yoshihiro*; Katano, Susumu; Metoki, Naoto; Kadowaki, Hiroaki*; Kawarazaki, Shuzo*

Journal of the Physical Society of Japan, 73(12), p.3418 - 3421, 2004/12

https://doi.org/10.1143/JPSJ.73.3418

Times Cited Count：20 Percentile：68.56(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Percolation fractal dimension in scattering line shapes of the random-field Ising model

Ye, F.*; Matsuda, Masaaki; Katano, Susumu; Yoshizawa, Hideki*; Belanger, D. P.*; Seppl, E. T.*; Fernandez-Baca, J. A.*; Alava, M. J.*

Journal of Magnetism and Magnetic Materials, 272-276, p.1298 - 1299, 2004/05

https://doi.org/10.1016/j.jmmm.2003.12.081

Times Cited Count：8 Percentile：41.01(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Static antiferromagnetic correlations under magnetic fields in electron-doped high- $_{c}$ cuprate superconductor Pr $_{0.89}$ LaCe $_{0.11}$ CuO $_{4}$

Fujita, Masaki*; Matsuda, Masaaki; Katano, Susumu; Yamada, Kazuyoshi*

Physica B; Condensed Matter, 345(1-4), p.19 - 22, 2004/03

https://doi.org/10.1016/j.physb.2003.11.011

Times Cited Count：1 Percentile：7.12(Physics, Condensed Matter)

no abstracts in English

Journal Articles

Magnetic field effects on the diffuse scattering of a spin-frustrated spinel ferrite ZnFe $_{2}$ O $_{4}$ single crystal

Kamazawa, Kazuya*; Katano, Susumu; Tsunoda, Yorihiko*

Physica B; Condensed Matter, B345(1-4), p.96 - 98, 2004/03

https://doi.org/10.1016/j.physb.2003.11.031

Times Cited Count：5 Percentile：29.77(Physics, Condensed Matter)

no abstracts in English

Journal Articles

Potentiality of the laboratory astrophysics using high repetition rate and high intensity lasers

Nishiuchi, Mamiko; Daido, Hiroyuki; Takabe, Hideaki*; Matsukado, Koji*

Reza Kenkyu, 31(11), p.711 - 720, 2003/11

https://doi.org/10.2184/lsj.31.711

no abstracts in English

Journal Articles

Ultra-short ultra-high intensity laser-matter interaction

Daido, Hiroyuki

Reza Kenkyu, 31(11), p.698 - 706, 2003/11

https://doi.org/10.2184/lsj.31.698

no abstracts in English

Journal Articles

Plasma flow measurement in high- and low-field-side SOL and influence on the divertor plasma in JT-60U

Asakura, Nobuyuki; Sakurai, Shinji; Itami, Kiyoshi; Naito, Osamu; Takenaga, Hidenobu; Higashijima, Satoru; Koide, Yoshihiko; Sakamoto, Yoshiteru; Kubo, Hirotaka; Porter, G. D.*

Journal of Nuclear Materials, 313-316, p.820 - 827, 2003/03

https://doi.org/10.1016/S0022-3115(02)01446-0

Times Cited Count：36 Percentile：89.58(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles