Surface magnetoelectric effect in ferromagnetic metal films

Phys Rev Lett. 2008 Sep 26;101(13):137201. doi: 10.1103/PhysRevLett.101.137201. Epub 2008 Sep 22.


A surface magnetoelectric effect is revealed by density-functional calculations that are applied to ferromagnetic Fe(001), Ni(001), and Co(0001) films in the presence of an external electric field. The effect originates from spin-dependent screening of the electric field which leads to notable changes in the surface magnetization and the surface magnetocrystalline anisotropy. These results are of considerable interest in the area of electrically controlled magnetism and magnetoelectric phenomena.