Asymmetric Interfaces in Epitaxial Off-Stoichiometric FeSi/Ge/FeSi Hybrid Structures: Effect on Magnetic and Electric Transport Properties.

Three-layer iron-rich FeSi/Ge/FeSi (0.2 < < 0.64) heterostructures on a Si(111) surface with Ge thicknesses of 4 nm and 7 nm were grown by molecular beam epitaxy.