AN INVESTIGATION OF MAGNETIC LINEAR DICHROISM CONTRIBUTIONS TO MG K-ALPHA X-RAY PHOTOEMISSION-STUDIES OF IRON

We present an investigation of magnetic linear dichroism in angle-reso lved photoemission distributions (MLDAD) from Fe(011) using unpolarize d Mg Ka radiation. The experimental geometry is identical to that prev iously used in recent spin-resolved X-ray photoelectron spectroscopy ( SRXPS) studies of ferromagnets. For this geometry, the results indicat e a small but observable MLDAD for the Fe 2p(3/2) and 2p(1/2) peaks. N o definitive MLDAD is observed for the Fe 3p level, the Fe valence ban d, or Auger transitions originating from a 2p(3/2) hole. For all spect ral features, MLDAD spectral variations are very small in comparison t o the intrinsic (exchange-induced) spin polarization of the Fe photoem ission spectra.