Fast generation of domain walls with defined chirality in nanowires

We demonstrate the fast generation of domain walls with defined chiralities in nanowires. Nanosecond long current pulses are passed through a stripline to generate Oersted fields which create vortex domain walls in the nanowire. The direction of the Oersted field with respect to the nanowire is varied by the polarity of the voltage pulses as well by the alignment between the stripline and the nanowire. The results show that by using a tilted stripline and short current pulses domain walls with defined chirality and type can be generated