SPIN-POLARIZED PHOTOELECTRON DIFFRACTION USING CIRCULARLY-POLARIZED X-RAYS

The observation of spin-dependent photoelectron diffraction using circ ularly polarized x rays is reported for Fe films on Cu(001). Circularl y polarized x rays produce spin-polarized photoelectrons from the Fe 2 p doublet, and intensity asymmetries in the 2p3/2 level are observed. Fully spin-specific multiple-scattering calculations reproduce the exp erimentally determined energy and angular dependences. An analytical p rocedure is introduced which removes exchange shift contributions to t he Fe 2p asymmetry, and focuses instead upon intensity variations due to spin-dependent diffraction.