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Pressure effect on paramagnet $$beta$$-US$$_2$$

Ikeda, Shugo; Sakai, Hironori  ; Matsuda, Tatsuma; Tateiwa, Naoyuki  ; Nakamura, Akio; Yamamoto, Etsuji ; Aoki, Dai*; Homma, Yoshiya*; Shiokawa, Yoshinobu*; Hedo, Masato*; Uwatoko, Yoshiya*; Haga, Yoshinori ; Onuki, Yoshichika

Single crystals of paramagnetic semiconductor $$beta$$-US$$_2$$ with the orthorhombic ($textit{Pnma}$) crystal structure were grown by chemical transport method. We measured the electrical resistivity $$rho$$ under high pressure, and magnetization. With increasing pressure, the temperature dependence of $$rho$$ approaches to semimetallic behavior and a kink anomaly appears at $$T_{rm a}$$.$$T_{rm a}$$ shifts to higher temperature with increasing pressure. From the comparison with ferromagnetic semimetal UTeS having the same crystal structure, it seems that $$T_{rm a}$$ is a ferromagnetic transition.

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Category:Physics, Condensed Matter

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