论文标题
费米表面和磁相互作用对于电子掺杂fESE嵌入的超导圆顶的重要性
Importance of Fermi surface and magnetic interactions for the superconducting dome in electron doped FeSe intercalates
论文作者
论文摘要
可以用各种无机和有机化合物插入的豆科代染色剂超导体的范德 - 瓦尔缝隙可以改变铁层的电子掺杂水平。在Lix（C3N2H10）0.37FESE中，据报道，超导过渡温度TC中的圆顶发生在X = 0.06至x = 0.68的掺杂范围内。我们使用密度功能理论和自旋波动理论的结合来捕获理论上的超导过渡温度的演变。我们清楚地证明了变化的电子结构如何支持增加的超导TC。但是，只能通过分析磁趋势来理解TC在高掺杂水平下的抑制，这些磁趋势从低掺杂时的条纹类型演变为高掺杂时的双线性。
The van-der-Waals gap of iron chalcogenide superconductors can be intercalated with a variety of inorganic and organic compounds that modify the electron doping level of the iron layers. In Lix(C3N2H10)0.37FeSe, a dome in the superconducting transition temperature Tc has been reported to occur in the doping range of x=0.06 to x=0.68. We use a combination of density functional theory and spin fluctuation theory to capture the evolution of superconducting transition temperatures theoretically. We clearly demonstrate how the changing electronic structure supports an increasing superconducting Tc. The suppression of Tc at high doping levels can, however, only be understood by analyzing the magnetic tendencies, which evolve from stripe-type at low doping to bicollinear at high doping.
