Tensor description of X-ray magnetic dichroism at the Fe L 2,3-edges of Fe3O4

A procedure to build the optical conductivity tensor that describes the full magneto-optical response of the system from experimental measurements is presented. Applied to the Fe L 2,3 -edge of a 38.85 nm Fe 3 O 4 /SrTiO 3 (001) thin-film, it is shown that the computed polarization dependence using the conductivity tensor is in excellent agreement with that experimentally measured. Furthermore, the magnetic field angular dependence is discussed...