Abstract
The surface and interface structure as well as the electronic properties of thin epitaxial films prepared by in situ oxidation of thin Fe(110) films grown on substrates using a Mo(110) buffer layer were investigated by low-energy electron diffraction (LEED), scanning tunneling microscopy (STM), transmission electron microscopy (TEM), and spin-polarized angle-resolved photoemission spectroscopy (SPARPES). The annealing of Fe(110) films at 700 °C in an atmosphere leads to the formation of epitaxial films. Atomically resolved STM images of the surface show a hexagonal symmetry with 6 Å periodicity. Well-controlled interface properties at the and Fe(110)/Mo(110) interfaces were confirmed by TEM. A high spin polarization value of about was found near the Fermi energy at room temperature by means of SPARPES with a photon energy of The electronic structure and spin polarization are compared to the corresponding values recently found on epitaxial films grown on W(110) single-crystal substrates.
- Received 29 January 2003
DOI:https://doi.org/10.1103/PhysRevB.68.045414
©2003 American Physical Society