Step-induced unusual magnetic properties of ultrathin Co/Cu films: Ab initio study

Article

关键词: COBALT FILMS;    FE;    TEMPERATURE;    TRANSITION;    OVERLAYERS;    SURFACES;    ALLOYS;    LMTO;    CR;    NI;   

DOI  :  10.1103/PhysRevB.54.R17371

来源: SCIE

【 摘 要 】

We have performed ab initio studies to elucidate the unusual magnetic behavior recently observed in epitaxial Co films upon absorption of submonolayers of Cu and other materials. We find that a submonolayer amount of Cu on a stepped Co/Cu (100) film changes dramatically the electronic and magnetic structure of the system. The effect is mainly due to hybridization of Co and Cu d electrons when copper forms a ''wire'' next to a Co step at: the surface. As a result, a noncollinear arrangement of magnetic moments (switching of the easy axis) is promoted.

【 授权许可】

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