Figure 2
From: In-situ study of oxygen exposure effect on spin-orbit torque in Pt/Co bilayers in ultrahigh vacuum
First harmonic Hall voltages of Pt (2)/Co (0.8) with applied in-plane field of (a) Hx and (b) Hy, and second harmonic Hall voltages with applied in-plane field of (c) Hx and (d) Hy measured at an AC current with an amplitude of 2.4 mA. +Mz and −Mz indicate the up and down magnetization.
