Magnetic properties of a Cr trimer on Au(1 1 1) surface

A Cr trimer on Au(1 1 1) surface has been studied by means of a relativistic Green's function embedding technique [B. Újfalussy, B. Lazarovits, L. Szunyogh, G.M. Stocks, P. Weinberger, Phys. Rev. B 70 (2004) 100404(R)]. In terms of the magnetic force theorem we fit parameters of an extended Heisenberg model. We then solve the Landau–Lifshitz–Gilbert equations in order to find the ground-state and to study the spin-dynamical properties of the cluster.