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Clear reduction in spin susceptibility and superconducting spin rotation for $$H||a$$ in the early-stage sample of spin-triplet superconductor UTe$$_2$$

Kitagawa, Shunsaku*; Tokunaga, Yo  ; Sakai, Hironori   ; Kambe, Shinsaku  ; 11 of others*

We report the re-measurement of the $$a$$-axis spin susceptibility component in an early-stage sample of the spin-triplet superconductor UTe$$_2$$ with the transition temperature of $$T_{rm SC}$$ = 1.6 K. Using Knight-shift measurements along the $$b$$ axis and at a 10-degree tilt from the $$b$$ axis towards the $$a$$ axis, we accurately determined the $$a$$-axis component without directly measuring the $$a$$-axis Knight shift. The experiment reveals that the previously reported absence of the reduction in Knight shift is attributed to the missing of signal from the superconducting region and to the detection of residual signals from the non-superconducting region instead.

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Category:Physics, Multidisciplinary

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