Surface electronic behavior of face-centered-cubic iron on copper

Publisher Website
Google Scholar
Abstract
We have studied the electronic structure of fcc iron grown epitaxially on (100) copper with ultraviolet photoemission (UPS), surface magneto-optic Kerr effect (SMOKE), low-energy electron diffraction (LEED), and self-consistent film linearized muffin-tin-orbital (FLMTO) calculations. This study identifies and explains novel characteristic UPS features of fcc iron and a substantial change in the work function compared to bcc iron. The SMOKE measurements show that fcc iron grown on copper has two metastable states lying close in energy. One of these is not ferromagnetic and occurs at room temperature, while the other is ferromagnetic and occurs at 190 °C. As shown by LEED, the ferromagnetic state has an expanded surface interplanar lattice; and UPS shows exchange splittings in that state.

This publication has 0 references indexed in Scilit: