论文标题
基于铁（Li，Fe）Ohfese中高-TC超导性的准二维性质
Quasi two-dimensional nature of high-Tc superconductivity in iron-based (Li,Fe)OHFeSe
论文作者
论文摘要
插入的硒化铁（LI，FE）OHFESE具有类似于准二维（2D）Bismuth Cuprate cuprate超导体的强层结构，并且具有高温（TC）和拓扑超导性。但是，到目前为止，尚未对其超导性维度的问题进行全面研究。在这里，我们报告说，基于（Li，Fe）Ohfese，基于电气传输和磁性磁化和模型配件的系统实验，还揭示了（LI，FE）OHFESE的准2D超导性特征，包括高各向异性γ= 151和相关的准2D涡旋。因此，我们为（li，fe）Ohfese建立了一个新的涡旋相图，该图描绘了出现的准2D涡流状态，并从煎饼样到三维状态的随后的涡旋 - 固定尺寸交叉，并降低温度和磁场。此外，我们发现此处揭示的所有准TC铁硒代超导体都揭示了所有的准2D特性，与高-TC二甲虫铜酸酯超导体报道的那些非常相似。
The intercalated iron selenide (Li,Fe)OHFeSe has a strongly layered structure analogous to the quasi two-dimensional (2D) bismuth cuprate superconductors, and exhibits both high-temperature (Tc) and topological superconductivity. However, the issue of its superconductivity dimensionality has not yet been fully investigated so far. Here we report that the quasi-2D superconductivity features, including the high anisotropy γ = 151 and the associated quasi-2D vortices, are also revealed for (Li,Fe)OHFeSe, based on systematic experiments of the electrical transport and magnetization and model fittings. Thus, we establish a new vortex phase diagram for (Li,Fe)OHFeSe, which delineates an emergent quasi-2D vortex-liquid state, and a subsequent vortex-solid dimensional crossover from a pancake-like to a three-dimensional state with decreasing temperature and magnetic field. Furthermore, we find that all the quasi-2D characteristics revealed here for the high-Tc iron selenide superconductor are very similar to those reported for the high-Tc bismuth cuprate superconductors.
