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$$^{29}$$Si-NMR study of antiferromagnet CeRh$$_2$$Si$$_2$$ using single crystals

反強磁性体CeRh$$_2$$Si$$_2$$単結晶を用いた$$^{29}$$Si核NMR研究

酒井 宏典; 徳永 陽; 神戸 振作; 松本 裕司; 松田 達磨; 芳賀 芳範

Sakai, Hironori; Tokunaga, Yo; Kambe, Shinsaku; Matsumoto, Yuji; Matsuda, Tatsuma; Haga, Yoshinori

正方晶ThCr$$_2$$Si$$_2$$型結晶構造を持つ反強磁性体CeRh$$_2$$Si$$_2$$のNMR研究を単結晶を用いて行った。磁化率と同じく、ナイトシフトは$$c$$軸方向にイジング型磁気異方性を示した。$$^{29}$$Si核の超微細結合定数を$$a$$軸方向、$$c$$軸方向に対して、ナイトシフトと磁化率のプロットから決定した。

$$^{29}$$Si-NMR Study of antiferromagnet CeRh$$_2$$Si$$_2$$ with a tetragonal ThCr$$_2$$Si$$_2$$-type structure has been performed using single crystals. The Knight shifts along the $$a$$ and $$c$$ axes have been measured as a function of temperatures in the paramagnetic state. At ambient pressure, the Knight shifts show the Ising-type anisotropy along the $$c$$ axis, which is similar to the magnetic susceptibility. The hyperfine coupling constants for $$^{29}$$Si along the $$a$$ and $$c$$ axes have been determined from Knight shifts versus static susceptibility plots.

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パーセンタイル:73.65

分野:Physics, Multidisciplinary

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