Figure 1
From: Inertia-driven resonant excitation of a magnetic skyrmion
Skyrmion in a magnetic nanodisk and its excitation by magnetic field. (a) Illustration of a HM/FM magnetic nanodisk system with electrons flowing in the HM electrode. The diameter and the thickness of the FM disk were set to 80 nm and 0.6 nm, respectively. (b) Illustration of a skyrmion confined in the nanodisk: skyrmion position R from the disk centre and the area of the skyrmion S. The colour indicates the magnitude of m z : red for m z  = +1 and blue for m z  = −1. (c) Frequency spectrum of the R max (blue: right axis) and ΔS (red: left axis) under an oscillating out-of-plane magnetic field. Note that R max and ΔS are normalized by the amplitude H z .
