Ab initio study of the fcc-WC(1Â 0Â 0) surface and its interaction with cobalt monolayers

▶ The free WC(1 0 0) surface undergoes a relaxation: carbon atoms moved outward, while tungsten atoms moved inward. ▶ The monolayer layers of cobalt with atoms positioned above carbon atoms are energetically preferable. ▶ Co layers are ferromagnetic, however, the magnetization does not influence essentially their energetics and geometry.