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Pressure-induced superconductivity of Ce$$_2$$Ni$$_3$$Ge$$_5$$

Ce$$_2$$Ni$$_3$$Ge$$_5$$における圧力誘起の超伝導

中島 美帆*; 小原 久典*; Thamizhavel, A.*; 松田 達磨; 芳賀 芳範   ; 辺土 正人*; 上床 美也*; 摂待 力生*; 大貫 惇睦

Nakashima, Miho*; Kohara, Hisanori*; Thamizhavel, A.*; Matsuda, Tatsuma; Haga, Yoshinori; Hedo, Masato*; Uwatoko, Yoshiya*; Settai, Rikio*; Onuki, Yoshichika

斜方晶Ce$$_2$$Ni$$_3$$Ge$$_5$$は、反強磁性転移を示すが、加圧とともに転移点はゼロに近づき、約4GPaで消失する。この臨界圧力付近で、重い電子状態を観測し、さらに0.26K以下において超伝導状態を見つけた。

The N$'e$el temperature of Ce$$_2$$Ni$$_3$$Ge$$_5$$ decreases with increasing pressure $$P$$ and becomes zero at a critical pressure $$Pc sim$$ 4 Gpa. The heavy fermion state was found to be formed around $$Pc$$, in which pressure region superconductivity was found below 0.26 K.

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パーセンタイル:35.12

分野:Physics, Condensed Matter

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