Spin-polarized photoelectron diffraction

Abstract

The use of multiplet-split $s$ levels in magnetic atoms or ions for spin-polarized photoelectron diffraction or extended x-ray absorption fine-structure experiments is discussed. Over the range 50-500 eV, spin-dependent scattering factors for ${\mathrm{Mn}}^{2+}$ show exchange-induced asymmetries of as high as 8%, with significantly larger effects expected for forward scattering as compared to backscattering. Single-scattering-cluster photoelectron diffraction calculations for Mn $3s$ emission from antiferromagnetic KMn${\mathrm{F}}_{3}$ show net effects ranging from 8% at 50 eV to 1% at 400 eV.