Orbital moment of a single Co atom on a Pt(111) surface - a view from   correlated band theory
  The orbital magnetic moment of a Co adatom on a Pt(111) surface is calculated in good agreement with experimental data making use of the LSDA+U method. It is shown that both electron correlation induced orbital polarization and structural relaxation play essential roles in orbital moment formation. The microscopic origins of the orbital moment enhancement are discussed. 
Alexander B. Shick (1), and Alexander I. Lichtenstein (2),   ((1)Institute of Physics ASCR, Prague, Czech Republic, (2)Unive...