Fig. 2: Homodyne-detected ferromagnetic resonance.
From: Local bifurcation with spin-transfer torque in superparamagnetic tunnel junctions
a Electrical circuit for homodyne-detected ferromagnetic resonance (FMR). b DC bias voltage V dependence of effective anisotropy field (μ0HKeff) determined by FMR. Red curves are fitting with a quadratic function to the plots. The error bar shows the standard error of fitting Kittel’s resonant condition to the experimentally obtained resonant frequency versus perpendicular magnetic field Hz.
