Abstract
A simple one-magnon formalism for the calculation of the inelastic exchange scattering of electrons from antiferromagnets is developed. Exponential attenuation of the electron beam in the bulk due to Coulomb scattering is introduced phenomenologically. The formalism is applied to the ferromagnetic (111) surface of antiferromagnetic NiO. For realistic values of the beam penetration, our results indicate that both surface and bulk magnons contribute to the electron dynamic scattering function and should be easily resolved over most of the surface Brillouin zone.
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