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标题：Electronic Properties of Fluoride and Half–fluoride Superlattices KZnF₃/KAgF₃ and SrTiO₃/KAgF₃
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作者：Xiaoping Yang ; Haibin Su
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2015
卷号：5
DOI：10.1038/srep15849
出版社：Springer Nature
摘要：We present the formation of cupratelike electronic structures in KAgF₃–related superlattices resulted from the confinement together with structural chemical modification by using the generalized gradient approximation augmented with maximally localized Wannier functions analysis. Strong antiferromagnetic coupling found in bulk KAgF₃ is held in purely–fluoride KZnF₃/KAgF₃. Under 4% in–plane compression strain, its Fermi surface shape breaks away from the edge of electron pocket and resembles that of La₂CuO₄. While within half–fluoride SrTiO₃/KAgF₃, out–of–plane electronic reconstruction results in electron doping of AgF₂ plane and antiferromagnetic state instability, and the Fermi surface shape presents considerable similarity to that in HgBaCuO₄. These results shed light on two dimensional antiferromagnetic precursors of a new Ag^II family of high–temperature superconductors.