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RuO
" [J. Phys. Soc. Jpn. 71 (2002) 1993]Nomura, Takuji; Yamada, Kosaku*
Journal of the Physical Society of Japan, 78(1), P. 018001_1, 2009/01
The minus signs at the heads of the third and fifth lines in the right-hand side of eq. (37) should be plus signs.
RuO; Multi-band theoryNomura, Takuji; Hirashima, Dai*; Yamada, Kosaku*
Journal of the Physical Society of Japan, 77(2), p.024701_1 - 024701_10, 2008/02
Times Cited Count：8 Percentile：49.99(Physics, Multidisciplinary)We investigate possible collective spin excitation by calculating the dynamical spin susceptibility in the spin-triplet superconducting state of SrRuO. The effect of the fluctuating triplet-pairing condensate on the spin susceptibility is taken into account. The triplet pairing symmetry is assumed to be the most promising form: 
(
) 
(
+ 
. For small (maybe realistic) anisotropy of pairing interaction in spin space, we expect a possible low-energy spin-wave mode as a peak structure in the imaginary part of the dynamical spin susceptibility, isolated from the spin excitation continuum. The present work is a natural extension of previous single-band calculations to a more realistic three-band calculation.
Nomura, Takuji; Yamada, Kosaku*
Nihon Butsuri Gakkai-Shi, 59(12), p.893 - 897, 2004/12
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.
CoO
HONishikawa, Yunori; Ikeda, Hiroaki*; Yamada, Kosaku*
Journal of the Physical Society of Japan, 73(5), p.1127 - 1130, 2004/05
Times Cited Count：17 Percentile：65.19(Physics, Multidisciplinary)no abstracts in English
-wave spin-triplet superconductivity in the CoO
superconductor; A Case study on a 2D triangular lattice in the repulsive hubbard modelIkeda, Hiroaki*; Nishikawa, Yunori; Yamada, Kosaku*
Journal of the Physical Society of Japan, 73(1), p.17 - 20, 2004/01
Times Cited Count：52 Percentile：84.77(Physics, Multidisciplinary)no abstracts in English
Yanase, Yoichi*; Jujo, Takanobu*; Nomura, Takuji; Ikeda, Hiroaki*; Hotta, Takashi; Yamada, Kosaku*
Physics Reports; A Review Section of Physics Letters, 387(1-4), p.1 - 149, 2003/11
Times Cited Count：210 Percentile：83.22(Physics, Multidisciplinary)In this article we review essential natures of superconductivity in strongly correlated electron systems from a universal point of view. Here we consider materials such as high-
cuprates, BEDT-TTF organic superconductors, ruthenate SrRuO, and heavy fermion superconductors. After the review of experimental results, we explain the formalism to discuss superconducting properties of strongly correlated electron systems based on the Dyson-Gor'kov equations. Then, we introduce theoretical retults on cuprates, organics, ruthenate, and heavy fermion superconductors in this order.
Kuroda, Toshimasa*; Sato, Kazuyoshi; Akiba, Masato; Ezato, Koichiro; Enoeda, Mikio; Osaki, Toshio*; Kosaku, Yasuo; Sato, Satoshi; Sato, Shinichi*; Suzuki, Satoshi*; et al.
JAERI-Tech 2002-044, 25 Pages, 2002/03
JAERI-Tech-2002-044.pdf:2.68MB
no abstracts in English
solid solution with magnesium and europium oxidesFujino, Takeo*; Sato, Nobuaki*; Yamada, Kota*; Nakama, Shohei*; Fukuda, Kosaku; Serizawa, Hiroyuki; Shiratori, Tetsuo*
Journal of Nuclear Materials, 297(3), p.332 - 340, 2001/09
Times Cited Count：4 Percentile：33.39(Materials Science, Multidisciplinary)Oxygen potential of solid solution Mg
Eu
U
O
was examined as a function of O/Metal ratio at 1000, 1100 and 1200
C. The O/Metal ratio which gave the steepest change of the oxygen potential(GOM) was 1.995 for y=0.05, z=0.1 and y=0.05, z=0.05. The position decreased to 1.908 at higher Mg
concentration of y=0.1, z=0.05. The GOM did not change with temperature in a range 1000-1200C. At GOM, a friction of 0.473 of total Mg occupy the interstitial position of the fluorite lattice.
in comparison with undoped UO, Mg-Nb doped UO and Ti doped UOFujino, Takeo*; Shiratori, Tetsuo; Sato, Nobuaki*; Fukuda, Kosaku; Yamada, Kota*; Suzuki, Yasufumi; Serizawa, Hiroyuki
Journal of Nuclear Materials, 297(2), p.176 - 205, 2001/08
Times Cited Count：20 Percentile：79.16(Materials Science, Multidisciplinary)no abstracts in English
Fujino, Takeo*; Sato, Nobuaki*; Yamada, Kota*; Okazaki, Manabu*; Fukuda, Kosaku; Serizawa, Hiroyuki; Shiratori, Tetsuo*
Journal of Nuclear Materials, 289(3), p.270 - 280, 2001/03
Times Cited Count：2 Percentile：19.66(Materials Science, Multidisciplinary)no abstracts in English
fuelsShiratori, Tetsuo; Serizawa, Hiroyuki; Fukuda, Kosaku; Fujino, Takeo*; Sato, Nobuaki*; Yamada, Kota*
JAERI-Research 2000-045, 74 Pages, 2000/09
JAERI-Research-2000-045.pdf:8.19MB
no abstracts in English
U
OFujino, Takeo*; Sato, Nobuaki*; Yamada, Kota*; *; Fukuda, Kosaku; Serizawa, Hiroyuki; Shiratori, Tetsuo
Journal of Nuclear Materials, 265(1-2), p.154 - 160, 1999/00
Times Cited Count：6 Percentile：45.57(Materials Science, Multidisciplinary)no abstracts in English
Serizawa, Hiroyuki; Fukuda, Kosaku; Shiratori, Tetsuo; Fujino, Takeo*; Sato, Nobuaki*; Yamada, Kota*
Journal of Alloys and Compounds, 271-273, p.386 - 390, 1998/00
Times Cited Count：9 Percentile：55.08(Chemistry, Physical)no abstracts in English
Fujino, Takeo*; *; Sato, Nobuaki*; Yamada, Kota*; Fukuda, Kosaku; Serizawa, Hiroyuki; Shiratori, Tetsuo
Journal of Nuclear Materials, 246(2-3), p.150 - 157, 1997/00
Times Cited Count：22 Percentile：83.3(Materials Science, Multidisciplinary)no abstracts in English
Nomura, Takuji; Yamada, Kosaku*
no journal, ,
Theory of the microscopic mechanism of anisotropic superconductivity in strongly correlated electron systems is presented. After addressing the general theory on the basis of the perturbation theory in electron-electron interaction, we will focus on the spin-triplet superconductivity realized in SrRuO. Analysis of physical quantities is also presented.
