I have a basic question about the spin hall effect and the inverse spin hall effect (SHE): Let's take a material like Pt, which has a high SHE. Typically the spin hall conductivity (spin current over electric field) = 300 ohm^-1 cm^-1. However, it is also used for measurements using the inverse effect (ISHE). However, when using the ISHE effect a high spin hall conductivity is not beneficial, because the resulting electric field will scale with the reciprocal of the spin hall conductivity. So I would conclude that a high SHE would automatically result in a low ISHE "efficiency". Or am I using these equations wrong?