Using first-principles density functional theory, we investigate theinterfacial magnetoelectric coupling in a tri-component superlattice composedof a ferromagnetic metal (FM), ferroelectric (FE), and normal metal (NM). UsingFe/FE/Pt as a model system, we show that a net and cumulative interfacialmagnetization is induced in the FM metal near the FM/FE interface. A carefullyanalysis of the magnetic moments in Fe reveals that the interfacialmagnetization is a consequence of a complex interplay of interfacial chargetransfer, chemical bonding, and spin dependent electrostatic screening. Thelast effect is linear in the FE polarization, is switchable upon its reversal,and yields a substantial interfacial magnetoelectric coupling.
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机译：使用第一原理密度泛函理论，我们研究了由铁磁金属（FM），铁电（FE）和普通金属（NM）组成的三组分超晶格中的界面磁电耦合。使用Fe / FE / Pt作为模型系统，我们表明在FM / FE界面附近的FM金属中会感应出净的和累积的界面磁化强度。仔细分析铁中的磁矩可以发现，界面磁化是界面电荷转移，化学键和自旋相关的静电筛选之间复杂相互作用的结果。最后的作用在FE极化中是线性的，在反转时可以切换，并产生大量的界面磁电耦合。
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