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3-
phase transition of Sn/Ge(111) surface studied by reflection high-energy positron diffractionFukaya, Yuki; Hashimoto, Mie; Kawasuso, Atsuo; Ichimiya, Ayahiko
no journal, ,
no abstracts in English
Sr
CuO
Fukuda, Tatsuo; Ikeuchi, Kazuhiko; Yamada, Kazuyoshi*; Baron, A.*; Sutter, J. P.*; Tsutsui, Satoshi*; Mizuki, Junichiro
no journal, ,
Recently the softening of the bond-stretching phonon branch has been studied intensively on perovskite oxides including high-T
superconductors. We have been studying the 
-dependence of the softening in LaSrCuO, and found that the peak width at low doping region by inelastic X-ray scattering (IXS) is much broader than that by inelastic neutron scattering (INS). In order to figure out the reason we did high energy IXS measurements (energy resolution is about 3meV). The result shows that the energy spectra consists of two peaks. By fitting the spectra with two Lorentzians, we could decide the dispersion, and the lower one was almost the same as the reported INS result. The twinning effect explains the double peak structure, but it cannot explain why INS shows only one branch.
IrIn
Oishi, Kazuki; Heffner, R. H.; Ito, Takashi; Higemoto, Wataru; Morris, G. D.*; Bauer, E. D.*; Sarrao, J. L.*; Thompson, J. D.*; MacLaughlin, D. E.*; Shu, L.*
no journal, ,
no abstracts in English
Okada, Koichi; Kondo, Keitaro; Sato, Satoshi; Nishitani, Takeo; Nomura, Ken*; Okamoto, Atsushi*; Iwasaki, Tomohiko*; Kitajima, Sumio*; Sasao, Mamiko*
no journal, ,
no abstracts in English
Nakagawa, Hiroshi; Jochi, Yasumasa*; Kitao, Akio*; Shibata, Kaoru; Go, Nobuhiro; Kataoka, Mikio
no journal, ,
no abstracts in English
Ikeda, Takashi
no journal, ,
no abstracts in English
Matsuda, Tatsuma; Haga, Yoshinori; Ikeda, Shugo; Yamamoto, Etsuji; Shishido, Hiroaki*; Hieu, N. V.*; Settai, Rikio*; Onuki, Yoshichika*
no journal, ,
no abstracts in English
studied with spherical neutron polarimetryKajimoto, Ryoichi; Matsuda, Masaaki; Takeda, Masayasu; Kakurai, Kazuhisa; Mitsui, Yukari*; Yoshizawa, Hideki*; Kimura, Tsuyoshi*; Tokura, Yoshinori*
no journal, ,
no abstracts in English
Y
MnO
Kajimoto, Ryoichi; Yokoo, Tetsuya*; Kofu, Maiko*; Noda, Kohei*; Kuwahara, Hideki*
no journal, ,
no abstracts in English
Terauchi, Masami*; Koike, Masato
no journal, ,
no abstracts in English
Yokota, Terufumi
no journal, ,
no abstracts in English
Hashimoto, Mie; Fukaya, Yuki; Kawasuso, Atsuo; Ichimiya, Ayahiko
no journal, ,
no abstracts in English
-Ag surface studied by reflection high-energy positron diffraction, 2Fukaya, Yuki; Hashimoto, Mie; Kawasuso, Atsuo; Ichimiya, Ayahiko
no journal, ,
no abstracts in English
Kubo, Katsunori; Hotta, Takashi
no journal, ,
Among heavy fermion superconductors, superconducting transition temperetures 
of CeMIn (M=Co, Rh, and Ir), so-called Ce115, are relatively high. We study the role of crystalline electric field (CEF) orbital statesin emergence of superconductivity in Ce115, we consider 
-electron model on a square lattice. In this study we condiser electron states with the total angular momentum 
. By choosing appropriate CEF parameters,we change CEF wave-function without changing CEF level splittings. While Fermi surface does not change so much,as long as CEF level splittings are fixed,ground state changes among paramagneti, antiferromagnetic, and superconducting states depending on the CEF state. Thus, the CEF orbital state is an important ingredient for controlling superductivity. We also analize CEF orbital states in Ce115 by using experimental results of neutron scattering and thermal expansion, and we find that the variation of in Ce115 can be explained by our theory.
Sakawa, Yoichi*; Watanabe, Daisuke*; Shoji, Tatsuo*; Yamazaki, Kozo*; Masaki, Kei; Tanabe, Tetsuo*
no journal, ,
no abstracts in English
OInami, Toshiya; Owada, Kenji; Tsubota, Masami; Matsuda, Yasuhiro*; Nojiri, Hiroyuki*; Ueda, Hiroaki*
no journal, ,
no abstracts in English
P
, 2Osakabe, Toyotaka; Kawana, Daichi*; Kuwahara, Keitaro*; Iwasa, Kazuaki*; Kikuchi, Daisuke*; Aoki, Yuji*; Kogi, Masafumi*; Sato, Hideyuki*
no journal, ,
no abstracts in English
Sakai, Hironori; Kambe, Shinsaku; Tokunaga, Yo; Fujimoto, Tatsuya; Walstedt, R. E.*; Yasuoka, Hiroshi; Aoki, Dai*; Homma, Yoshiya*; Yamamoto, Etsuji; Nakamura, Akio; et al.
no journal, ,
no abstracts in English
observed in Bragg reflectionYoneda, Yasuhiro; Komura, Yoshiki*; Suzuki, Yoshio*; Kojima, Akira*; Morimura, Ryota*; Mizuki, Junichiro
no journal, ,
no abstracts in English
PTokunaga, Yo; Aoki, Dai*; Sakai, Hironori; Fujimoto, Tatsuya; Kambe, Shinsaku; Homma, Yoshiya*; Matsuda, Tatsuma; Ikeda, Shugo; Yamamoto, Etsuji; Nakamura, Akio; et al.
no journal, ,
In the family of filled skutterudites, the only Np-based compound successfully crystallized to date is NpFeP. There is no other filled skutterudite including trans-uranium elements reported up to now. NpFeP is isostructural with UFeP, except for the replacement of U by Np. Magnetization measurements indicate the occurrence of ferromagnetic ordering with a Curie temperature 
K. In order to investigate microscopic electronic properties of this compound, we have performed 
P-NMR measurements using a single crystal.