In the last Spectrum editions, we have described the Inverse-Spin-Hall-Effect (ISHE) in great detail. It is a transversal DC voltage that appears in ferro/non-magnetic double layers with spin-orbit-interactions. It is measured with a special coplanar waveguide (CPW) which has additional electrical contacts that allow the measurement of the generated voltage.
Quantum Design have published below comprehensive application note on the setup and measurement with an ISHE-CPWs for low temperatures. https://www.qdusa.com/sitedocs/appNotes/general/1087-203.pdf The measurements were taken in a PPMS/DynaCool/VersaLab.

More about magnetometers