SPIN-RESOLVED IRON SURFACE-DENSITY OF STATES

The spin polarization of photoemitted valence-band electrons from poly crystalline Fe films shows good qualitative agreement with the calcula ted spin-resolved density of states (SRDOS) of bcc Fe. The quantitativ e differences are accounted for by the surface contribution to the pho toelectron intensity. Simple subtraction of calculated bulk Fe SRDOS f rom the photoemission spectra yield an experimental surface SRDOS that agrees well with the calculation for Fe(001) and Fe(110). The Fe surf ace spin polarization is enhanced by (12+/-8)% over the bulk, consiste nt with theoretical predictions.