Fig. 3: Magnetic circular dichroism of the interfaces, coercive fields, and remnant magnetization.
a Magnetic circular dichroism spectra of the interfaces on a “per repeat unit” basis. b Coercive fields obtained from analysis of the spin-up channel Fe2+ → Fe3+ charge-transfer excitation in the (3, 1), (7, 1), and (9, 1) superlattices vs. temperature. c Remanent magnetic circular dichroism for different types of Fe-related excitations and Lu-layer distortion vs. the number of LuFeO3 layers (m). The Lu-layer distortion is taken from ref. 20, where total displacement d = 1.5 × Q the distortion amplitude44. See Table 1 and associated text for exact energies.
