MAGNETIC DICHROISM AT THE GIANT-DIPOLE RESONANCE OF FE AND MN VIA TIME-DEPENDENT DENSITY-FUNCTIONAL THEORY

The polarization-resolved photoabsorption cross section has been calcu lated in the vicinity of the 3p --> 3d giant dipole resonances of Fe ( 45-65 eV) and Mn (45-60 eV) using the relativistic time-dependent loca l spin-density approximation. The method accounts for the largest feat ures in the unpolarized experimental total cross sections, after Gauss ian broadening is applied; however, minor features are not given corre ctly. Both circular and linear dichroic spectra are presented, however experimental data are not yet available.