论文标题
最佳掺杂hgba $ _2 $ cuo $ _ {4+y} $的最佳掺杂hgba中的氧气间隙电线的比例免费分布
Scale free distribution of oxygen interstitials wires in optimum doped HgBa$_2$CuO$_{4+y}$
论文作者
论文摘要
新颖的纳米级探针正在开放新的场所，以了解由掺杂的高温超导perovskites驱动的非常规电子和磁功能。在这项工作中，我们专注于HGBA $ _2 $ _2 $ cuo $ _ {4+y} $的超分子层的多尺寸纹理（O-I）条纹，以最佳的超导关键温度$ t_c $ = 94k。我们通过使用扫描微型和纳米X射线 - 划分来报告具有在多个尺度上分形的空间分布的氧互化O-I原子电线的列阶段的令人信服的证据。 O-I原子电线的最佳掺杂量表从微米比例延伸至纳米级的尺度分布与Cuo $ _2 $平面中的复杂丝网网络富含金属电线的复杂丝网网络有关。观察到的临界乳白色为控制高温超导性在最佳掺杂时的临界点附近提供了证据
Novel nanoscale probes are opening new venues for understanding unconventional electronic and magnetic functionalities driven by multiscale lattice complexity in doped high temperature superconducting perovskites. In this work we focus on the multiscale texture at supramolecular level of atomic oxygen interstitials (O-i) stripes in HgBa$_2$CuO$_{4+y}$ at optimal doping for the highest superconducting critical temperature $T_C$=94K. We report compelling evidence for the nematic phase of oxygen-interstitial O-i atomic wires with fractal-like spatial distribution over multiple scales by using scanning micro and nano X-ray-diffraction. The scale free distribution of O-i atomic wires at optimum doping extending from micron scale down to nanoscale has been associated with the intricate filamentary network of hole rich metallic wires in the CuO$_2$ plane. The observed critical opalescence provides evidence for the proximity to a critical point controlling the emergence of high temperature superconductivity at optimum doping
