Dynamics of coupled domain walls

Dynamic Oscillations of Coupled DomainWalls.
L. O’Brien, E. R. Lewis, A. Ferna´ndez-Pacheco, D. Petit, and R. P. Cowburn, J. Sampaio and D. E. Read
Phys. Rev. Lett. 108, 187202 (2012)

(a) Micromagnetic simulation of two magnetostatically coupled HH and TT DWs in parallel nanowires. (b) DW-DW interaction coupling strength K as a function of width w and wire separation d. (c) Parameters of the DW 1D model: uniform cant angle and central position x. (d) Resonant frequency of DW-DW interaction as a function of separation, d, and thickness t (w ¼ 50 nm). (e) Q factor of resonance as a function of d and t (w ¼ 50 nm).