Electron theory of magnetoelectric effects in metallic ferromagnetic nanostructures
作者： Sergej Subkow , Manfred Fähnle
DOI: 10.1103/PHYSREVB.84.054443
关键词:
摘要: The physics of magnetoelectric effects in metallic films is investigated by use the ab initio spin density functional theory for Fe and Fe-Au-Fe heterofilms with various thicknesses. Based on magnetic force theorem calculation magnetocrystalline anisotropy energy, ${E}_{\text{mca}}$, a method definition layer-resolved contributions to ${E}_{\text{mca}}$ introduced, reliability this discussed detail. knowledge such important theoretical modeling an atomic level systems that are too complicated treatment. Quantities characterize anisotropic electron charge its modification these quantities useful interpretation spirit Kittel's explanation ${E}_{\text{mca}}$. Finally, it shown certain average thicknesses ultrathin possible switch magnetization between in-plane out-of-plane directions rather small electric fields.
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