Fig. 3: Calculated vibrational and magnon EELS of NiO.

a–d, Simulated momentum-resolved EELS (dispersion curves) of phonon (a,c) and magnon (b,d) excitations, along the Γ → M and Γ → X q paths of the Brillouin zone for NiO, respectively. Experimental parameters such as sample temperature, environmental magnetic field inside the microscope and electron-optical parameters are considered (Methods).