LaOFeAs的解理行为和表面态的计算
Calculated Cleavage Behavior and Surface States of LaOFeAs
摘要：
铁基超导体的层状结构使其电子结构或多或少具有明显的二维性，在LaOFeAs中最为明显。结果是不同的表面状态，预计将影响任何表面敏感的实验探针。在这项工作中，详细的解理行为和表面电子结构的LaOFeAs的密度泛函分析。得到的表面态形成二维带与自己的费米表面显着不同的体电子结构。
英文摘要：
The layered structure of the iron based superconductors gives rise to a more or less pronounced two-dimensionality of their electronic structure, most pronounced in LaOFeAs. A consequence are distinct surface states to be expected to influence any surface sensitive experimental probe. In this work a detailed density functional analysis of the cleavage behavior and the surface electronic structure of LaOFeAs is presented. The surface states are obtained to form two-dimensional bands with their own Fermi surfaces markedly different from the bulk electronic structure.
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