Fig. 2: Measured and calculated resonance dynamics of Fe3Sn2.
a Measured dynamical response. Top panels present measured \(\left|{m}_{z}\right|\) as a function of \({H}_{0}\) at \(6\), \(8\), \(12\), and \(14\) \({GHz}\) (light green open circles). Reconstructed responses are indicated in green solid line. Data is presented in normalized units. Main panel: Frequency dispersion relations of the breathing and CCW resonance modes. b Micromagnetic dynamical simulations. Top panels present the calculated textures at \({{\mu }_{0}H}_{0}=0\), \(75\), \(225\), and \(325\,{mT}\). The textures are represented by plotting the equilibrium OOP component of the magnetization, \({M}_{0,z}\). The main panel presents the calculated frequency response of \(\left|{m}_{z}\right|\) as a function of \({H}_{0}\) for \(\alpha=0.05\). Each response was normalized to its peak value. c Measured resonance linewidths (\(\Delta {H}_{i}\)) of CCW and breathing modes as a function of \(f\). Solid lines represent a fit to a second order polynomial function. d Calculated \(\Delta {H}_{i}\) of the two modes. Solid lines illustrate the calculation for \(\alpha=0.01\), \(0.03\), and \(0.05\). In (a, c, d) data of the breathing and CCW modes are indicated by blue and red colors, respectively.
