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Journal Articles

Ferromagnetic resonance modulation in -wave superconductor/ferromagnetic insulator bilayer systems

Ominato, Yuya*; Yamakage, Ai*; Kato, Takeo*; Matsuo, Mamoru

Physical Review B, 105(20), p.205406_1 - 205406_7, 2022/05

https://doi.org/10.1103/PhysRevB.105.205406

Times Cited Count：9 Percentile：79.16(Materials Science, Multidisciplinary)

Journal Articles

SR studies of Pu metal and the Pu-based superconductor PuCoGa

Heffner, R. H.; Bauer, E. D.*; Chung, B.*; Fluss, M. J.*; Higemoto, Wataru; Ito, Takashi; MacLaughlin, D. E.*; Morales, L. A.*; Morris, G. D.*; Oishi, Kazuki; et al.

Journal of the Physical Society of Japan, 75(Suppl.), p.14 - 19, 2006/08

no abstracts in English

Journal Articles

Anisotropic superconducting gap in transuranium superconductor PuRhGa $_{5}$ ; Ga NQR study on a single crystal

Sakai, Hironori; Tokunaga, Yo; Fujimoto, Tatsuya; Kambe, Shinsaku; Walstedt, R. E.; Yasuoka, Hiroshi; Aoki, Dai*; Homma, Yoshiya*; Yamamoto, Etsuji; Nakamura, Akio; et al.

Journal of the Physical Society of Japan, 74(6), p.1710 - 1713, 2005/06

https://doi.org/10.1143/JPSJ.74.1710

Times Cited Count：78 Percentile：90.06(Physics, Multidisciplinary)

$^{69,71}$ Ga NMR/NQR studies have been performed on a single crystal of the transuranium superconductor PuRhGa $_{5}$ with $T_{c}sim 9$ K. We have observed a $^{69}$ Ga NQR line at 29.15 MHz, and assigned it to the Ga site using the NMR results. The $^{69}$ Ga NQR spin-lattice relaxation rate $1/T_{1}$ shows no coherence peak just below $T_{rm c}$ , but obeys $T^{3}$ behavior below $T_{rm c}$ . This result strongly suggests that PuRhGa $_{5}$ is an unconventional superconductor having an anisotropic superconducting gap. The gap amplitude 2 $Delta_{0}(Trightarrow 0)simeq5k_{rm B}T_{rm c}$ and the residual density of states $N_{rm res}(T=0)/N_{rm 0}(T=T_{rm c})simeq$ 0.25 have been determined assuming a simple polar function of the form = $Delta_{0}costheta$ , where and are angular parameters on the Fermi surface.

Journal Articles

Progress in the theory of anisotropic superconductivity on the basis of the fermi liquid theory

Nomura, Takuji; Yamada, Kosaku*

Nihon Butsuri Gakkai-Shi, 59(12), p.893 - 897, 2004/12

http://ci.nii.ac.jp/naid/10016175375

A number of superconductors exhibiting anisotropic pairing have been discovered so far. In anisotropic superconductors, the attractive force originates from the component of the pair-scattering amplitude. We provide a unified view on the microscopic mechanism of anisotropic superconductivity on the basis of the Fermi liquid theory.

Journal Articles

De Haas-van Alphen effect in a heavy fermion superconductor UPd $_{2}$ Al $_{3}$

Haga, Yoshinori; Inada, Yoshihiko*; Sakurai, Kenji*; Tokiwa, Yoshifumi; Yamamoto, Etsuji; Homma, Tetsuo*; Onuki, Yoshichika*

Physica B; Condensed Matter, 284-288, p.1291 - 1292, 2000/07

https://doi.org/10.1016/S0921-4526(99)02566-1

Times Cited Count：0 Percentile：0(Physics, Condensed Matter)

no abstracts in English

Journal Articles

Observation of heavy electrons in UPd $_{2}$ Al $_{3}$

Haga, Yoshinori; Inada, Yoshihiko*; Yamagami, Hiroshi*; Sakurai, Kenji*; Tokiwa, Yoshifumi; Yamamoto, Etsuji; Homma, Tetsuo*; Onuki, Yoshichika*

Physica B; Condensed Matter, 281-282, p.780 - 781, 2000/06

https://doi.org/10.1016/S0921-4526(99)01095-9

Times Cited Count：0 Percentile：0(Physics, Condensed Matter)

no abstracts in English

Journal Articles

Neutron scattering study on heavy fermion superconductors

Metoki, Naoto; Koike, Yoshihiro*; Haga, Yoshinori; Onuki, Yoshichika*

Physica B; Condensed Matter, 259-261, p.660 - 661, 1999/00

https://doi.org/10.1016/S0921-4526(98)00881-3

Times Cited Count：2 Percentile：16.46(Physics, Condensed Matter)

no abstracts in English

Oral presentation

Muon knight shift in SrRuO

Higemoto, Wataru; Ito, Takashi; Yoshida, Yoshiyuki*; Baines, C.*

no journal, ,

It is believed that spin triplet superconductivity is realized in SrRuO. However, there are some objections for the spin triplet superconductivity. The spin triplet superconductivity is suggested mainly from NMR Knight shift measurements. Different form NMR, muon gives us the information completely inside the specimen. In our presentation, we report on the muon Knight shift measurement in SrRuO.