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The spin Hall effect(SHE)and inverse spin Hall effect(ISHE)have become increasingly important because of their intriguing physics and great applications in the charge-spin conversion.It is commonly known that the SHE arises from the spin orbit coupling(SOC)[1].As an outstanding issue,however,the qualitative dependence of the SHE on the SOC strength is still unclear.In order to enhance the charge-spin conversion efficiency and to reveal the mechanism of the SHE,it is imperative to study the SHE in nonmagnetic alloys in which the SOC strength can be tuned continuously in a wide range.