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S nuclear magnetic resonance spectra of uranium disulfide 
-US
Sakai, Hironori; Tokunaga, Yo; Haga, Yoshinori; Kambe, Shinsaku; Ramakrishna, S. K.*; Reyes, A. P.*; Rosa, P. F. S.*; Ronning, F.*; Thompson, J. D.*; Fisk, Z.*; et al.
JPS Conference Proceedings (Internet), 30, p.011169_1 - 011169_6, 2020/03
Uranium disulfide -US showing a semimetal-to-semiconductor crossover has been investigated by the nuclear magnetic resonance (NMR) technique for S nuclei with the nuclear spin of 
. Since the natural concentration 0.76% of NMR active S nuclei is too dilute, the isotopic enrichment to 
50% has been carried out for the single crystal growth. The S NMR spectra have been successfully obtained using a single crystal of -US with external fields along the crystallographic 
axis. The S sites assignments have been made based on these NMR spectra.
Matsumoto, Yuji*; Haga, Yoshinori; Tateiwa, Naoyuki; Yamamoto, Etsuji; Fisk, Z.*
Journal of the Physical Society of Japan, 87(2), p.024706_1 - 024706_4, 2018/02
Times Cited Count：0 Percentile：0.00(Physics, Multidisciplinary)Kim, H.*; Yoshida, Yasuo*; Lee, C.-C.*; Chang, T.-R.*; Jeng, H.-T.*; Lin, H.*; Haga, Yoshinori; Fisk, Z.*; Hasegawa, Yukio*
Science Advances (Internet), 3(9), p.eeao0362_1 - eeao0362_5, 2017/09
Times Cited Count：14 Percentile：64.62(Multidisciplinary Sciences)
Haga, Yoshinori; Matsumoto, Yuji*; Pospisil, J.; Tateiwa, Naoyuki; Yamamoto, Etsuji; Yamamura, Tomoo*; Fisk, Z.*
Journal of Physics; Conference Series, 807(1), p.012015_1 - 012015_4, 2017/04
Times Cited Count：1 Percentile：32.82(Physics, Condensed Matter)
Si as a reference to the strongly correlated isostructural metals investigated by quantum oscillationsMatsumoto, Yuji*; Haga, Yoshinori; Tateiwa, Naoyuki; Aoki, Haruyoshi*; Kimura, Noriaki*; Yamamura, Tomoo*; Yamamoto, Etsuji; Matsuda, Tatsuma*; Fisk, Z.*; Yamagami, Hiroshi*
Journal of the Physical Society of Japan, 85(10), p.104709_1 - 104709_7, 2016/10
Times Cited Count：3 Percentile：26.69(Physics, Multidisciplinary)Si revealed by comparison with nonmagnetic references ThRuSi and LaRuSiEmi, Naoya*; Hamabata, Ryosuke*; Nakayama, Daisuke*; Miki, Toshihiro*; Koyama, Takehide*; Ueda, Koichi*; Mito, Takeshi*; Kohori, Yo*; Matsumoto, Yuji*; Haga, Yoshinori; et al.
Journal of the Physical Society of Japan, 84(6), p.063702_1 - 063702_4, 2015/06
Times Cited Count：10 Percentile：57.36(Physics, Multidisciplinary)
Th
RuSiHaga, Yoshinori; Matsumoto, Yuji*; Tateiwa, Naoyuki; Yamamoto, Etsuji; Kimura, Noriaki*; Yamamura, Tomoo*; Fisk, Z.
Journal of Physics; Conference Series, 592(1), p.012036_1 - 012036_5, 2015/03
Times Cited Count：2 Percentile：59.95(Physics, Atomic, Molecular & Chemical)SiHaga, Yoshinori; Matsuda, Tatsuma*; Tateiwa, Naoyuki; Yamamoto, Etsuji; Onuki, Yoshichika; Fisk, Z.
Philosophical Magazine, 94(32-33), p.3672 - 3680, 2014/11
Times Cited Count：5 Percentile：25.95(Materials Science, Multidisciplinary)-USYamamoto, Etsuji; Tateiwa, Naoyuki; Haga, Yoshinori; Ikeda, Shugo*; Sakai, Hironori; Onuki, Yoshichika; Fisk, Z.
JPS Conference Proceedings (Internet), 3, p.011095_1 - 011095_4, 2014/06
-USTateiwa, Naoyuki; Haga, Yoshinori; Yamamoto, Etsuji; Fisk, Z.
JPS Conference Proceedings (Internet), 3, p.011086_1 - 011086_7, 2014/06
Paramagnetic -US is a semiconductor with the band gap of 90 K. The applying pressure on -US induces a weak ferromagnetic state above 0.5 GPa and the phase is understood as "induced moment ferromagnetism". In this study, we have measured the magnetization in -US across the insulator-metal transition at 5 GPa with a ceramic anvil high pressure cell. The spontaneous magnetic moment is strongly enhanced at the transition pressure from 0.04 to 0.4 
/U. The ferromagnetic state may be stabilized by the larger carrier concentration.
investigated by de Haas-van Alphen effect and high pressure resistivity measurementsMatsumoto, Yuji; Haga, Yoshinori; Tateiwa, Naoyuki; Yamamoto, Etsuji; Kimura, Noriaki*; Aoki, Haruyoshi*; Fisk, Z.
JPS Conference Proceedings (Internet), 3, p.011097_1 - 011097_5, 2014/06
SiMatsumoto, Yuji*; Haga, Yoshinori; Tateiwa, Naoyuki; Aoki, Haruyoshi*; Kimura, Noriaki*; Matsuda, Tatsuma*; Yamamoto, Etsuji; Fisk, Z.; Yamagami, Hiroshi*
JPS Conference Proceedings (Internet), 3, p.011096_1 - 011096_5, 2014/06
Tateiwa, Naoyuki; Haga, Yoshinori; Matsuda, Tatsuma*; Fisk, Z.
Journal of Physics; Conference Series, 500(14), p.142032_1 - 142032_5, 2014/05
Times Cited Count：4 Percentile：81.73(Physics, Applied)We have designed a miniature ceramic anvil high pressure cell (mCAC) for magnetic measurements at pressures up to 12.6 GPa in a commercial superconducting quantum interference (SQUID) magnetometer. In this conference, we will shows details of the mCAC and our recent modifications in the cell. Also, we will show results of high pressure magnetic measurements on rare earth compound YbCuSi. We find that the pressure-induced phase has strong uniaxial anisotropy.
and URhGeTateiwa, Naoyuki; Haga, Yoshinori; Matsuda, Tatsuma*; Yamamoto, Etsuji; Fisk, Z.
Physical Review B, 89(6), p.064420_1 - 064420_8, 2014/02
Times Cited Count：29 Percentile：73.48(Materials Science, Multidisciplinary)We report a dc magnetization study of the critical phenomenon around the ferromagnetic transition temperature 
in high-quality single crystals of uranium ferromagnetic superconductors UGe and URhGe. Although the values of the critical exponent and 
for the magnetization in UGe and URhGe are close to those in the 3D magnets, the values of the critical exponent 
for the magnetic susceptibility are close to unity, that expected from the mean field theory. The unconventional critical scaling of magnetization in UGe, and URhGe cannot be explained via previous approaches to critical phenomena.
SiTateiwa, Naoyuki; Matsuda, Tatsuma*; Haga, Yoshinori; Fisk, Z.
Physical Review B, 89(3), p.035127_1 - 035127_5, 2014/01
Times Cited Count：12 Percentile：43.49(Materials Science, Multidisciplinary)We report dc magnetic measurements on YbCuSi at pressures above 10 GPa using a miniature ceramic anvil cell. YbCuSi shows a pressure-induced transition from the non-magnetic to a magnetic phase at 8 GPa. We find a spontaneous dc magnetization in the pressure-induced phase above 9.4 GPa. The pressure dependence of the ferromagnetic transition temperature and the spontaneous magnetic moment 
at 2.0 K have been determined. The pressure-induced phase has strong Ising-type uniaxial anisotropy.
Fisk, Z.; Haga, Yoshinori
Journal of the Korean Physical Society, 63(3), p.795 - 799, 2013/08
Times Cited Count：1 Percentile：11.16(Physics, Multidisciplinary)
Co NMRKotegawa, Hisashi*; Nohara, Hiroki*; To, Hideki*; Matsuda, Tatsuma; Yamamoto, Etsuji; Haga, Yoshinori; Fisk, Z.; Onuki, Yoshichika; Aoki, Dai*; Flouquet, J.*
Journal of the Korean Physical Society, 63(3), p.341 - 344, 2013/08
Times Cited Count：1 Percentile：11.16(Physics, Multidisciplinary)
Haga, Yoshinori; Bauer, E. D.*; Tobash, P. H.*; Mitchell, J. N.*; Ayala-Valenzuela, O.*; McDonald, R. D.*; Mielke, C. H.*; Fisk, Z.
Journal of the Korean Physical Society, 63(3), p.380 - 382, 2013/08
Times Cited Count：3 Percentile：26.73(Physics, Multidisciplinary)Al
(T = transition metal)Matsumoto, Yuji; Matsuda, Tatsuma; Tateiwa, Naoyuki; Yamamoto, Etsuji; Haga, Yoshinori; Fisk, Z.
Journal of the Korean Physical Society, 63(3), p.363 - 366, 2013/08
Times Cited Count：8 Percentile：50.01(Physics, Multidisciplinary)Matsuda, Tatsuma; Tateiwa, Naoyuki; Yamamoto, Etsuji; Haga, Yoshinori; Onuki, Yoshichika; Aoki, Dai*; Flouquet, J.*; Fisk, Z.
Journal of the Korean Physical Society, 63(3), p.575 - 578, 2013/08
Times Cited Count：4 Percentile：33.02(Physics, Multidisciplinary)