Interactions of SWs and DWs in a nanowire

Interaction between propagating spin waves and domain walls on a ferromagnetic nanowire.
J.-S. Kim, M. Stärk, and M. Kläui, J. Yoon and C.-Y. You, L. Lopez-Diaz and E. Martinez
Phys. Rev. B 85, 174428 (2012)

(a) The SW amplitudes as a function of time (t = 5.0–5.5 ns with fH = 6.0 GHz, B0 = 200 mT, and Bext = 0.5 mT) at the TW position (x = 500 nm and x = 700 nm) (black line, the SW amplitude without a TW; red line, the SW amplitude with a TW). (b) The FFT spectra of the SW amplitude for the case of (a) at the TW position (x = 500 nm). (c) The SW amplitudes as a function of time at x = 500 nm (t = 5.0–10.0 ns with fH = 11.0 GHz, B0 = 200 mT, and Bext = 0.8 mT). (d) The FFT spectrum of the SW amplitude for the case of  (c) at the TW position. Inset shows the snapshots of the y-component magnetization for two different simulation times.