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Quadrupole effects in tetragonal crystals PrCu$$_2$$Si$$_2$$ and DyCu$$_2$$Si$$_2$$

正方晶PrCu$$_2$$Si$$_2$$及びDyCu$$_2$$SI$$_2$$における四極子効果

三本 啓輔*; 後藤 沙織*; 根本 祐一*; 赤津 光洋*; 後藤 輝孝*; Dung, N. D.*; 松田 達磨; 芳賀 芳範; 竹内 徹也*; 杉山 清寛*; 摂待 力生*; 大貫 惇睦

Mitsumoto, Keisuke*; Goto, Saori*; Nemoto, Yuichi*; Akatsu, Mitsuhiro*; Goto, Terutaka*; Dung, N. D.*; Matsuda, Tatsuma; Haga, Yoshinori; Takeuchi, Tetsuya*; Sugiyama, Kiyohiro*; Settai, Rikio*; Onuki, Yoshichika

We have investigated quadrupole effects in tetragonal crystals of PrCu$$_2$$Si$$_2$$ and DyCu$$_2$$Si$$_2$$ by means of low-temperature ultrasonic measurements. The elastic constant C$$_{44}$$ of PrCu$$_2$$Si$$_2$$ exhibits pronounced softening below 70 K, which is described in terms of a quadrupole susceptibility for a doublet ground state.

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パーセンタイル:100

分野:Physics, Condensed Matter

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