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Report No.

Symmetry lowering in NpO$$_2$$; $$^{17}$$O-NMR study

Tokunaga, Yo ; Homma, Yoshiya*; Kambe, Shinsaku ; Aoki, Dai*; Sakai, Hironori  ; Yamamoto, Etsuji ; Nakamura, Akio; Shiokawa, Yoshinobu; Walstedt, R. E.; Yasuoka, Hiroshi

In order to elucidate the nature of the exotic ordered phase of NpO$$_2$$ below $$T_0$$= 26 K, we have initiated the first $$^{17}$$O-NMR measurements. From the temperature dependence of the $$^{17}$$O-NMR spectrum, the occurrence of two inequivalent oxygen sites has been confirmed below $$T_0$$. This finding verifies the lowering of symmetry in the ordered state of NpO$$_2$$.



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Category:Physics, Condensed Matter



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