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Surface Magnetoelectric Effect in Ferromagnetic Metal Films
Preprint
Chun-Gang Duan ,
Julian P. Velev ,
R. F. Sabirianov ,
Ziqiang Zhu ,
Junhao Chu ,
S. S. Jaswal ,
E. Y. Tsymbal
06 August 2008
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Abstract
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 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.