2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/19644We calculate the current spin polarisation and the interface resistance of Fe/GaAs and Fe/ZnSe (001) spin injection junctions from first principles, including also the possibility of a Schottky barrier. From our results of interface resistance we estimate the barrier thickness needed for efficient spin injection if the process is non-ballistic.2 figures; submitted to Journal of Superconductivity: Incorporating Novel MagnetismMaterials Sciencetext