Schematic summarizing the theoretical findings, explaining the differences in magnetic field-induced energy shifts between the two excitons. The transition from AFM to FM order changes the bandgap by 100 meV. Correspondingly, the binding energy of the XH exciton changes by 34 meV, resulting in a 66 meV change in the exciton energy. The XL exciton energy shows a smaller change of 10 meV. CB, conduction band; VB, valence band.
