  Ferromagnetic (FM)/heavy metal (HM) nanostructures can be used for the
magnetic state readout in the proposed magneto-electric spin-orbit logic by
locally injecting a spin-polarized current and measure the spin-to-charge
conversion via the spin Hall effect. However, this local configuration is prone
to spurious signals. In this work, we address spurious Hall effects that can
contaminate the spin Hall signal in these FM/HM T-shaped nanostructures. The
most pronounced Hall effects in our Co50Fe50/Pt nanostructures are the planar
Hall effect and the anomalous Hall effect generated in the FM nanowire. We find
that the planar Hall effect, induced by misalignment between magnetization and
current direction in the FM wire, is manifested as a shift in the measured
baseline resistance, but does not alter the spin Hall signal. In contrast, the
anomalous Hall effect, arising from the charge current distribution within the
FM, adds to the spin Hall signal. However, the effect can be made insignificant
by minimizing the shunting effect via proper design of the device. We conclude
that local spin injection in FM/HM nanostructures is a suitable tool for
measuring spin Hall signals and, therefore, a valid method for magnetic state
readout in prospective spin-based logic.
