Figure 5
From: Electrical writing, deleting, reading, and moving of magnetic skyrmioniums in a racetrack device
Electrical reading of skyrmioniums. The black curve shows the calculated transverse resistance signal when the skyrmionium sequence (top panel) passes the leads. In the presence of a skyrmionium between the leads (green background) a distinct pattern is found that exceeds two thresholds (dashed lines) three times. In good approximation the signal is proportional to the integrated topological charge density between the leads (orange). If no skyrmionium is present (red) the curve fluctuates around zero. Parameters: skyrmionium radius: 40 sites, track width: 120 × 2000 sites, bit width: 240 sites, lead width: 29 sites, m/t = 5, EF = −8.5 t.
