Ab initio studies of non-collinear magnetic ordering of Cr dimers on Mo(110)

Small clusters may display innovative properties in ultra small scales, and are very promising for applications in the future. Cr has anti-ferromagnetic ordering in its bulk, described by a spin density wave with a wavelength incommensurate with the lattice constant. In thin films, Cr films are anti-ferromagnetic on most substrates. Here we study magnetic ordering, magnetic anisotropy and spin dynamics of a Cr dimer on Mo (110), smallest possible magnetic recording unit. The~locally self-consistent multiple scattering (LSMS) method for spin-dynamics and the~full potential linearized augmented plane wave (FLAPW)~method~for magnetic anisotropy are adopted in the calculations. We found various peculiar features in the free and supported Cr dimers and explained our results from electronic structures.