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La
Pb
Tokunaga, Yo; Suzuki, Hiroyuki*; Sakai, Hironori; Chudo, Hiroyuki; Kambe, Shinsaku; Yasuoka, Hiroshi; Homma, Yoshiya*; Aoki, Dai*; Shiokawa, Yoshinobu*
no journal, ,
no abstracts in English
Onishi, Hiroaki; Gonzalez, I.*; Melko, R.*; Dagotto, E.*
no journal, ,
no abstracts in English
by soft X-ray angle-resolved resonant photoemission spectroscopyOkochi, Takuo; Yasui, Akira; Takeda, Yukiharu; Okane, Tetsuo; Saito, Yuji; Fujimori, Atsushi*; Yamagami, Hiroshi; Miyauchi, Yuichiro*; Okuda, Yusuke*; Settai, Rikio*; et al.
no journal, ,
We have investigated the bulk 4
electronic structure of the non-centrosymmetric superconductor, CeIrSi by soft X-ray angle-resolved photoemission spectroscopy. We have performed the angle-resolved 3
-4 resonant photoemission and the comparison of the angle-resolved photoemission spectra of CeIrSi with those of non- reference compound, LaIrSi and revealed that the 4 states of CeIrSi well hybridized with the non- conduction bands.
Matsuda, Tatsuma
no journal, ,
no abstracts in English
Kambe, Shinsaku; Sakai, Hironori; Tokunaga, Yo; Matsuda, Tatsuma; Haga, Yoshinori; Chudo, Hiroyuki
no journal, ,
Knight shift, T
,T
, specific heat and susceptibility have been measured in USn and analyzed in terms of spin-fluctuation model. The heavy fermion state is well described with the model, but T-dependent RKKY interaction is necessary to reproduce the crossover regime. The dynamical scaling law is suggested for the heavy fermion regime in the T measurements.
Tateiwa, Naoyuki
no journal, ,
We have developed a system based on the diamond anvil cell for high pressure experiments. Noble gas argon is used as a pressure-transmitting medium. We have tested 12 kind of pressure-transmitting media commonly used for the high pressure studies. It is found that the noble gas argon is best one for the study up to 10 GPa. We have measured the electrical resistivity of a uranium antiferromagnet U
Zn
. The pressure dependences of the antiferromagnetic transition temperature and the characteristic temperature of the itinerant electronic state are discussed. It is found that the pressure effect on the physical properties in UZn is weak compared with the other heavy fermion system.
Takeda, Yukiharu; Okane, Tetsuo; Okochi, Takuo; Kobayashi, Masaki*; Fujimori, Shinichi; Saito, Yuji; Yamagami, Hiroshi; Fujimori, Atsushi; Ikeda, Shugo*; Sakai, Hironori; et al.
no journal, ,
no abstracts in English
Al NMR studies of NpPd
AlChudo, Hiroyuki; Sakai, Hironori; Tokunaga, Yo; Kambe, Shinsaku; Aoki, Dai*; Homma, Yoshiya*; Shiokawa, Yoshinobu*; Haga, Yoshinori; Ikeda, Shugo*; Matsuda, Tatsuma; et al.
no journal, ,
no abstracts in English
using first principle band calculationYasui, Akira; Yamagami, Hiroshi
no journal, ,
We have obtained the electronic structure of CeCoSi, which is typical compounds in the heavy-fermion system, using a first-principle band calculation with the relativistic linearized-augmented-plane-wave method. I compared calculated results with the band dispersion and the Fermi surface (FS) formation obtained by the Ce 3-4 resonant angle-resolved photoemission spectra at BL23SU of SPring-8. As the result, the calculated FS formation is good agreement with experimental one. The LDA calculation explains the experimental band dispersion roughly. However there are some problems: especially, the valence band obtained by the experiment shows the energy shift to higher side compared with one by LDA calculation. This problem is due to the strong electronic correlation. Ce 4 band which pushes down the valence band shifts to higher energy because of the strong electron-electron interaction.