Figure 2

(a) Spatio-temporal evolution of the \(s{_\text {x}}\) component of the magnetisation when the SO-field is kept on during the entire simulation. Recombination event occurs and as a result there is a breather. (b) Spatio-temporal evolution of the \(s_{\text {x}}\) component of the magnetisation when the SO-field is turned off when the collision occurs. The two DWs behave as soliton appearing after the collision with the same winding number but with a \(180^\circ \) phase shift in its internal spins. (c) Spatio-temporal evolution of the \(s_{\text {x}}\) component of the magnetisation when the SO-field is turned off at 18.5 ps. The two DWs carry \(v>v{_\text {e}}\) but the attractive potential after the elastic collision recombine them in the simulation time window. (d) Phase diagram of the different outcomes from a collision event in terms of the amplitude of the SO-field and its duration. Green dots represent inelastic collisions at v>v\(_\text {crit}\) when the SO-field is still on at the collision instance. Orange dots correspond to elastic conditions. Blue dots consist of a first elastic collision followed by an inelastic collision. Red dots represent inelastic collisions at v<v\(_\text {crit}\) when the SO-field is absent at the collision moment. Black dots correspond to a situation where the SO-field is turned of so early that during the computational time window, no collision is observed.