Fig. 3: Magnetostochastic resonance driving sources.
From: Efficient magnetic switching in a correlated spin glass
a Stochastic resonance switching on a symmetric double-well qualitatively modelled by FiM exchange energy (grey downward triangles) and magnetocrystalline anisotropy energy (red upward triangles). The potential is subject to a synchronised periodic drive TΩ (red-yellow trace), enabling the switching of the otherwise stable FiM state. b FiM switching cartoon: the circles illustrate the MSR harnessing concept with periodic MnL3 TEY pulses indicated by grey and red/blue flash symbols, respectively. Periodic pulses with entrained P(t) signal (red-yellow circle) enable the FiM switching in a statistical average. c Sinusoidal fit (red-yellow trace) of a time evolution of normalized TEY periodic drive P(t) measured at 10 K, B = 0, and hν = 638.8eV (grey trace). Superimposed red and blue spikes represent transient TEY pulse at the MnL3 edge that would occur during consecutive XAS1, XAS2, etc. scans. d Typical time series of periodic (green/top) and aperiodic (grey/bottom) XAS scans which controls the magnetostochastic resonance switching (MSR-on/off). Empty spaces between the XAS scans is the time needed to move the monochromator back to the initial energy.
