title: Monolayer resolved oscillating hyperfine fields in epitaxial face-centered-tetragonal Co(001) films.
abstract: Ultrahigh-quality thin fct-Co films grown on Cu(001) have been investigated by 59Co nuclear magnetic resonance. The influence of the spin-dependent electron scattering at the interfaces is observed for at least four Co atomic layers from the interface with monolayer resolution. An oscillatory effect on the Co hyperfine field with a period of several monolayers is measured, corresponding to the oscillating conduction electron polarization. The observation is exclusively possible in this system due to its very narrow resonance lines, corresponding to a virtually perfect Co structure.
authors.affiliation: Eindhoven University of Technology, Department of Applied Physics, center for NanoMaterials (cNM) and COBRA Research Institute, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
authors.forename: H
authors.initials: H
authors.lastname: Wieldraaijer
authors.forename: W J M
authors.initials: WJ
authors.lastname: de Jonge
authors.forename: J T
authors.initials: JT
authors.lastname: Kohlhepp