Magnetic order of FeMn alloy on the W(001) surface

摘要

We investigate theoretically the ground state of the FeMn binary alloymonolayer on the W(001) surface, the stability of different magneticconfigurations (ferro/antiferromagnetic, disordered local moments, etc.) andestimate concentrations at which a transition occurs between different magneticorders. The tight-binding linear muffin-tin orbital method combined with thecoherent potential approximation is used to treat the surface alloyappropriately. We discuss the role of disorder on the phase transitions insurface alloys composed from two different 3d transition metals.