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論文

Heavy fermion state of YbNi$$_2$$Si$$_3$$ without local inversion symmetry

中村 翔太*; 兵頭 一志*; 松本 裕司*; 芳賀 芳範; 佐藤 仁*; 上田 茂典*; 三村 功次郎*; 斉木 克祥*; 磯 孝斉*; 山下 穣*; et al.

Journal of the Physical Society of Japan, 89(2), p.024705_1 - 024705_5, 2020/02

https://doi.org/10.7566/JPSJ.89.024705
 被引用回数：2 パーセンタイル：22.16(Physics, Multidisciplinary)

We have succeeded in growing a new heavy fermion compound YbNi$$_2$$Si$$_3$$ by the flux method. From electrical resistivity, magnetization, specific heat, magnetic torque and X-ray photoemission measurements concluded that this compound is a heavy fermion compound exhibiting an antiferromagnetic order at 0.35 K.

論文

Conduction-band electronic states of YbInCu$$_4$$ studied by photoemission and soft X-ray absorption spectroscopies

内海 有希*; 佐藤 仁*; 栗原 秀直*; 間曽 寛之*; 平岡 耕一*; 小島 健一*; 飛松 浩明*; 大河内 拓雄*; 藤森 伸一; 竹田 幸治; et al.

Physical Review B, 84(11), p.115143_1 - 115143_7, 2011/09

https://doi.org/10.1103/PhysRevB.84.115143
 被引用回数：11 パーセンタイル：44.66(Materials Science, Multidisciplinary)

典型的な価数揺動系であるYbInCu$$_4$$の価電子状態を、硬X線内殻光電子分光,軟X線吸収実験、及び軟X線光電子分光の温度依存性の実験から研究した。YbInCu$$_4$$の価数転移について、価電子帯からYb 4$$f$$状態への電荷移動で記述した。

論文

Three dimensional atomic image of TlInSe$$_{2}$$ by X-ray fluorescence holography

三村 功次郎*; 細川 伸也*; 八方 直久*; Hu, W.; 林 好一*; 脇田 和樹*; 石井 啓文*; 吉村 政人*; Jeyakanthan, J.*; Mamedov, N.*

e-Journal of Surface Science and Nanotechnology (Internet), 9, p.273 - 276, 2011/07

https://doi.org/10.1380/ejssnt.2011.273

Three dimensional (3D) atomic images around the Tl atoms in single crystal TlInSe$$_{2}$$ thermoelectric material in the incommensurate phase were reconstructed by using Tl LIII X-ray fluorescence holography measured at room temperature. Comparison of the experimentally obtained 3D images with the theoretically calculated ones suggests that only the Tl atoms have large spatial fluctuations, which are related to the incommensurate phase of this material.

論文

Three-dimensional atomic images of TlInSe$$_{2}$$ thermoelectric material obtained by X-ray fluorescence holography

細川 伸也*; 八方 直久*; 林 好一*; 三村 功次郎*; 脇田 和樹*; Hu, W.; 石井 啓文*; 吉村 政人*; Jeyakanthan, J.*; Mamedov, N.*

Japanese Journal of Applied Physics, 50(5), p.05FC06_1 - 05FC06_2, 2011/05

https://doi.org/10.1143/JJAP.50.05FC06
 被引用回数：7 パーセンタイル：31.23(Physics, Applied)

Three dimensional (3D) atomic images around the Tl atoms in single crystal TlInSe$$_{2}$$ thermoelectric material in the incommensurate phase were reconstructed by using Tl $$L$$$$_{rm III}$$ X-ray fluorescence holography measured at room temperature. In the obtained 3D image, the In atoms are clearly visible at the proper positions in the normal phase. However, the Tl atomic images are also observed but very weak. By comparing the experimental image with a theoretically calculated one, it is concluded that only the Tl atoms have large spatial fluctuations, which are related to the incommensurate phase of this material.

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