Fig. 2: Microwave emission of spin Hall oscillators.
From: Spin–orbit torque nano-oscillator with giant magnetoresistance readout
Power spectral density (PSD, color scale on the right) of microwave signal generated by giant magnetoresistance spin Hall oscillator (GMR SHO) (a) and anisotropic magnetoresistance spin Hall oscillator (AMR SHO) (b), measured as a function of direct current Idc applied to the nanowire. For these measurements, in-plane magnetic field H = 800 Oe was applied at angle ϕH with respect to the nanowire axis. PSD versus frequency for GMR SHO (c) and AMR SHO (d) measured at H = 800 Oe (Idc = 6.0 mA and ϕH = 90° for the GMR SHO, Idc = 3.65 mA and ϕH = 85° for the AMR SHO).
