Fig. 3: Magnetic hysteresis of a Néel DW.
From: Néel domain walls with bistable chirality in a perpendicularly magnetized ferrimagnetic insulator
The probabilistic DW moment orientation is measured through DW motion as a function of the IP field pulse amplitude \({H}_{x}^{{{\rm{sw}}}}\). The width of the \({H}_{x}^{{{\rm{sw}}}}\) pulse is 1 s. The lower (upper) range denoted by “Left” (“Right”) represents a 100% probability of measuring DW motion corresponding to a left (right)-oriented DW. On the negative \({H}_{x}^{{{\rm{sw}}}}\) branch (red circles), the DW moment orientation is initialized to the right with a 500 Oe, 500 ms IP initialization field pulse. On the positive \({H}_{x}^{{{\rm{sw}}}}\) branch (blue circles), the DW moment orientation is initialized to the left with a 500 Oe, 500 ms IP initialization field pulse. Orange solid curves are error functions fitted to the measured data, from which we obtain \({H}_{x,c}^{{{\rm{sw}}}}\), which is the critical field amplitude, corresponding to a 50% success rate of switching the DW chirality. We extract the DW coercive field from the width of the fitted hysteresis loop, \({H}_{c,{{\rm{DW}}}}\) = 160 \(\pm\) 32 Oe, and the DMI field from the lateral shift \({H}_{D}\) = 11 \(\pm\) 32 Oe.
