AVS 47th International Symposium
    Magnetic Interfaces and Nanostructures Monday Sessions
       Session MI-MoM

Paper MI-MoM3
Cu Metallic Quantum Well State Dispersions in the Cu/fccFe/Cu(100) System

Monday, October 2, 2000, 9:00 am, Room 206

Session: Magnetic Spectroscopies
Presenter: A. Danese, Rutgers University
Authors: A. Danese, Rutgers University
R.A. Bartynski, Rutgers University
Correspondent: Click to Email
Multilayers of alternating ultrathin non-magnetic/ferromagnetic (NM/FM) films often exhibit oscillatory magnetic coupling between sequential FM layers. This phenomenon has great technological importance and is associated with the presence of metallic quantum well (MQW) states in the NM layer. To understand the influence of the FM substrate on the electronic states of the NM layer, we have performed an inverse photoemission (IPE) study of the Cu/fccFe/Cu(100) system along the @Gamma@X direction of the surface Brillouin zone (SBZ). We have also modeled this system using a phase accumulation approach. The model predicts that a subset of these states disperse slowly as a function of parallel momentum in the region of the projected spin polarized band gap of the FM layer, which for fccFe lies a few eV above the Fermi energy. We will discuss IPE results for Cu/fccFe/Cu(100) system in this region of the SBZ, both above and below the Curie temperature of the Fe layer. We have also investigated thermal desorption of CO from this system as a function of Cu film thickness to determine how the presence of MQW states influences the chemisorption bond.@footnote 1@ @FootnoteText@ @footnote 1@Supported by NSF-DMR #98-01681 and ACS-PRF #33750-AC6,5.