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Effect of uranium deficiency on normal and superconducting properties in unconventional superconductor UTe$$_2$$

非従来型超伝導体UTe$$_2$$におけるウランの欠損が常伝導及び超伝導特性に与える影響

芳賀 芳範   ; Opletal, P.  ; 常盤 欣文  ; 山本 悦嗣  ; 徳永 陽  ; 神戸 振作  ; 酒井 宏典   

Haga, Yoshinori; Opletal, P.; Tokiwa, Yoshifumi; Yamamoto, Etsuji; Tokunaga, Yo; Kambe, Shinsaku; Sakai, Hironori

Single crystals of the unconventional superconductor UTe$$_2$$ have been grown in various conditions. Superconducting samples are nearly stoichiometric within an experimental error of about 1%, while non-superconducting sample significantly deviates from the ideal composition. The superconducting UTe$$_2$$ showed that the large density of states was partially gapped in the normal state, while the non-superconducting sample is characterized by the relatively large electronic specific heat as reported previously.

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パーセンタイル:89.61

分野:Physics, Condensed Matter

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