Fig. 1: Plots of ε with respect to µ0Hx for the series of Pt/Co/W films with different tCo as indicated.
From: Interfacial atomic layers for full emergence of interfacial Dzyaloshinskii–Moriya interaction

The vertical error bars are the standard deviation of several repeated measurements. The black vertical lines indicate the antisymmetric center with ε = 0 for each curve. The curved solid lines guide the eyes.