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arXiv 1101.0771cond-mat.mtrl-scicond-mat.mes-hall
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石墨烯/Fe/Ni(111)类插层体系的电子结构和磁性

Electronic structure and magnetic properties of the graphene/Fe/Ni(111) intercalation-like system

M. Weser, E. N. Voloshina, K. Horn, Yu. S. Dedkov

摘要:

采用密度泛函理论计算和电子能谱方法研究了石墨烯/Fe/Ni(111)体系的电子结构和磁性.该体系通过在Ni(111)上的石墨烯下面插入薄Fe层(1 ML)来制备,并且其惰性性质通过光电子能谱学来验证。铁在石墨烯和Ni(111)之间的空间中的嵌入极大地改变了来自石墨烯层的磁响应,这通过在薄铁层中形成高度自旋极化的$3d_{z^2}$量子阱态来解释。

英文摘要:

The electronic structure and magnetic properties of the graphene/Fe/Ni(111) system were investigated via combination of the density functional theory calculations and electron-spectroscopy methods. This system was prepared via intercalation of thin Fe layer (1 ML) underneath graphene on Ni(111) and its inert properties were verified by means of photoelectron spectroscopy. Intercalation of iron in the space between graphene and Ni(111) changes drastically the magnetic response from the graphene layer that is explained by the formation of the highly spin-polarized $3d_{z^2}$ quantum-well state in the thin iron layer.

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