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SiKambe, Shinsaku; Tokunaga, Yo; Sakai, Hironori; Matsuda, Tatsuma; Haga, Yoshinori; Lapertot, G.*; Aoki, Dai*; Flouquet, J.*; Brison, J. P.*
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We have made 52% 
Si isotope enriched high quality single crystal sample of YbRhSi. Since the natural abundance of Si is only 4%, we can improve S/N of NMR signal by 100 times using this enriched sample. Spin-lattice relaxation time T
is measured. In this compound, the QCP is appeared at 0.66T for H//c, 0.06T for H//a. At first, measurements are performed at 7.2T in the Fermi-liquid state. A crossover to the Fermi-liquid state is observed below 6K for H//a as previous report. The behavior for H//c is different.
Moribayashi, Kengo
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no abstracts in English
Sato, Shinichiro; Sai, Hitoshi*; Oshima, Takeshi; Imaizumi, Mitsuru*; Shimazaki, Kazunori*; Kondo, Michio*
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no abstracts in English
Kawasuso, Atsuo; Maekawa, Masaki; Fukaya, Yuki; Yabuuchi, Atsushi; Mochizuki, Izumi
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We are investigating magnetic substances by means of polarized positron annihilation spectroscopy with 
Ge-Ga source. We so far found that the Doppler broadening of annihilation radiation (DBAR) spectra of Fe, Co, Ni and Gd exhibit so-called field-reversal asymmetry. In this study, we investigated detailed field dependences of the field-reversal asymmetry. For Fe and Co, we found that the field-reversal asymmetry of the DBAR spectra show hysteresis like the magnetization curve. For Ni and Gd, we found somewhat different features from those of Fe and Co. These differences are explained considering the band structure and its field splitting.
Metoki, Naoto; Yamamoto, Etsuji; Sakai, Hironori; Haga, Yoshinori; Matsuda, Tatsuma; Ikeda, Shugo*
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Iwata, Yoshihiro; Harano, Hideki*; Ito, Chikara; Aoyama, Takafumi
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Oikawa, Kenichi; Ohara, Takashi*; Kiyanagi, Ryoji; Kawasaki, Takuro; Tamura, Itaru; Kaneko, Koji; Kimura, Hiroyuki*; Noda, Yukio*; Takahashi, Miwako*; Kiyotani, Tamiko*; et al.
no journal, ,
A new single crystal neutron diffractometer SENJU is now being built at a rapid rate in BL18 of MLF at J-PARC. The instrument realize measurements using small sample, less than 1.0 
under combined special environment at 1 MW beam power. We designed the beamline specification considering sample size and its mosaicity, spacial resolution of the area detector, and so on. The concrete design input and their detailed investigation process of the beamline will be presented.
(M = Mn, Fe, Co, Ni) studied by the Ti2p-edge X-ray emission spectroscopy, 2Agui, Akane; Mizumaki, Masaichiro*; Uozumi, Takayuki*
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Izumi, Yudai*; Momoki, Yohei*; Tanigawa, Yoshiaki*; Tanaka, Masahito*; Agui, Akane; Nakagawa, Kazumichi*
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Ieda, Junichi; Takahashi, Saburo; Maekawa, Sadamichi
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We theoretically investigate spin injection into semiconductors using magnetization dynamics excited by ferromagnetic resonance based on the interface s-d exchange interaction. Analyzed are recent experimental data observed in Tohoku University and Cambridge University using semiconductor (GaAs)/ferromagnetic metal (Ni
Fe
) bilayer systems where the semiconductors are both p- and n-doped samples. From the experimentally obtained inverse spin Hall voltage we evaluate the magnitude of the interface exchange coupling constant.
Kono, Hidetoshi
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Ninomiya, Kazuhiko; Ito, Takashi; Higemoto, Wataru; Strasser, P.*; Kawamura, Naritoshi*; Shimomura, Koichiro*; Miyake, Yasuhiro*; Miura, Taichi*; Kita, Makoto*; Shinohara, Atsushi*; et al.
no journal, ,
Muonic atom is an atomic system that has one negatively charged muon instead of an electron. Muonic atom is formed when a negative muon is stopped in matter. There are many studies of muonic atom formation by measuring muonic X-rays emitted after formation of muonic atom. From these studies, "molecular effect" on muonic atom formation becomes clear; different muonic X-ray structures are obtained from muon irradiations between allotropes. In addition, muonic X-ray intensity patterns are also influenced by density of muon irradiation sample (density effect). The quantitative examination of molecular and density effect is essential to investigate muonic atom formation process by measuring muonic X-rays. In this study, we investigated density effect of muonic X-ray structure for nitrogen oxide samples.
Ninomiya, Kazuhiko; Kawamura, Naritoshi*; Strasser, P.*; Shimomura, Koichiro*; Higemoto, Wataru; Miyake, Yasuhiro*
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Ishikado, Motoyuki; Kodama, Katsuaki; Kajimoto, Ryoichi; Nakamura, Mitsutaka; Inamura, Yasuhiro; Mizuno, Fumio; Wakimoto, Shuichi; Iyo, Akira*; Eisaki, Hiroshi*; Arai, Masatoshi; et al.
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Nb
)O by X-ray fluorescence holographyHu, W.; Hayashi, Koichi*; Happo, Naohisa*; Owada, Kenji; Chen, J.*; Ye, Z.-G*; Hosokawa, Shinya*; Takahashi, Masamitsu
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Shibata, Kaoru*; Takahashi, Nobuaki; Kawakita, Yukinobu; Kamazawa, Kazuya*; Yamada, Takeshi*; Ueno, Hiroki; Shimakura, Hironori; Nakajima, Kenji; Kambara, Wataru; Inamura, Yasuhiro; et al.
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Si, 3Matsuda, Tatsuma; Hassinger, E.*; Aoki, Dai*; Taufour, V.*; Flouquet, J.*; Tateiwa, Naoyuki; Yamamoto, Etsuji; Haga, Yoshinori; Onuki, Yoshichika; Fisk, Z.
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Matsunami, Noriaki*; Sakuma, Yasuhiro*; Sataka, Masao; Okayasu, Satoru; Kakiuchida, Hiroshi*
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Yamamoto, Takashi; Onoda, Shinobu; Oshima, Takeshi; Naydenov, B.*; Dolde, F.*; Fedder, H.*; Honert, J.*; Jelezko, F.*; Wrachtrup, J.*; Teraji, Tokuyuki*; et al.
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no abstracts in English
electrons on the mass enhancement in heavy electron systemsKubo, Katsunori
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no abstracts in English