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Kataoka, Noriyuki*; Tanaka, Masashi*; Hosoda, Wataru*; Taniguchi, Takumi*; Fujimori, Shinichi; Wakita, Takanori*; Muraoka, Yuji*; Yokoya, Takashi*
Journal of Physics; Condensed Matter, 33(3), p.035501_1 - 035501_6, 2021/01
Times Cited Count：4 Percentile：33.7(Physics, Condensed Matter)
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Yoshii, Kenji; Matsumura, Daiju; Saito, Hiroyuki; Kambe, Takashi*; Fukunaga, Mamoru*; Muraoka, Yuji*; Ikeda, Naoshi*; Mori, Shigeo*
Journal of the Physical Society of Japan, 83(6), p.063708_1 - 063708_4, 2014/06
Times Cited Count：4 Percentile：34.67(Physics, Multidisciplinary)We report the change of magnetic properties of multiferroic YbFeO, caused by cooling in the presence of an electrical current. The magnetization measured after the cooling becomes smaller by about 10-20% than that after cooling without a current. The current also affects the magnetic anisotropy below about 100 K; the magnetic coercivity is increased by about 10-20%. These phenomena may arise from a coexistence of ferromagnetic and antiferromagnetic domains, or a disturbance in the formation of charge-ordered domains. From the applied viewpoint, the enhancement of anisotropy by an electrical current offers a method for stabilizing magnetization other than the well-known method, i.e., exchange bias.
SiYoshida, Rikiya*; Fukui, Masaki*; Haga, Yoshinori; Yamamoto, Etsuji; Onuki, Yoshichika; Okawa, Mario*; Malaeb, W.*; Shin, S.*; Muraoka, Yuji*; Yokoya, Takayoshi*
Physical Review B, 85(24), p.241102_1 - 241102_4, 2012/06
Times Cited Count：18 Percentile：59.41(Materials Science, Multidisciplinary)
Rh
)Si studied by laser angle-resolved photoemission spectroscopyYoshida, Rikiya*; Nakamura, Yoshiaki*; Fukui, Masaki*; Haga, Yoshinori; Yamamoto, Etsuji; Onuki, Yoshichika; Okawa, Mario*; Shin, S.*; Hirai, Masaaki*; Muraoka, Yuji*; et al.
Journal of Physics; Conference Series, 273, p.012021_1 - 012021_4, 2011/02
Times Cited Count：1 Percentile：33.9(Physics, Condensed Matter)SiYoshida, Rikiya*; Nakamura, Yoshiaki*; Fukui, Masaki*; Haga, Yoshinori; Yamamoto, Etsuji; Onuki, Yoshichika; Okawa, Mario*; Shin, S.*; Hirai, Masaaki*; Muraoka, Yuji*; et al.
Physical Review B, 82(20), p.205108_1 - 205108_6, 2010/11
Times Cited Count：62 Percentile：88.1(Materials Science, Multidisciplinary)OsO
induced by geometrical frustrationKoda, Akihiro*; Kadono, Ryosuke*; Oishi, Kazuki; Saha, S. R.*; Higemoto, Wataru; Yonezawa, Shigeki*; Muraoka, Yuji*; Hiroi, Zenji*
Journal of the Physical Society of Japan, 76(6), p.063703_1 - 063703_4, 2007/06
Times Cited Count：18 Percentile：66.99(Physics, Multidisciplinary)We report on the muon spin relaxation study of a pyrochlore oxide, CdOsO, which exhibits a metal-insulator transition. It reveals strong spin fluctuation below the MI transition, suggesting a predominant role of geometrical spin frustration. Meanwhile, an incommensurate spin density wave discontinuously develops at lower temperature. These observations strongly suggest the occurrence of an anomalous magnetic transition and associated change in the local spin dynamics in undistorted pyrochlore antiferromagnet.
