Figure 2
From: Injection locking of multiple auto-oscillation modes in a tapered nanowire spin Hall oscillator
Linear spin-wave modes of the SHO. (a) Mode frequencies along the SHO (x-direction) as determined from micromagnetic simulations of the local spin-wave spectrum. (b) Simulated mode amplitude profile in the center of the SHO (plotted against y-direction) for the three resonances. (c) Thermal BLS microscopy measurements. Each vertical line represents a spectrum for a fixed position on the SHO with the intensity color coded. The dots indicate the onset frequencies of the spin-wave band that are determined via Lorentzian fits, as is exemplarily shown in (d) for the spectrum recorded at x = 623 nm.
