论文标题
最佳掺杂YBA $ _2 $ cu $ _3 $ o $ o $ _ {7-δ} $超导体的前体超导效应：超导波动与渗透效果之间的对抗重新审议
Precursor superconducting effects in the optimally doped YBa$_2$Cu$_3$O$_{7-δ}$ superconductor: the confrontation between superconducting fluctuations and percolative effects revisited
论文作者
论文摘要
在最佳掺杂型YBA $ _2 $ _2 $ _2 $ _3 $ _3 $ o $ $ o $ o $ $ o $ $ _ {7-Δ} $（ybco）的情况下，早先在定量级别上解决了超导的波动和渗透效应之间的对抗，这是平面副导率的起源。使用来自高质量的YBCO薄膜的平面电阻率数据，我们将通过考虑总能量临界值来扩展这些分析，以进行常规超导波动，以进行常规超导波动。这些数据还将根据有效中等理论的平均野外接口进行分析，以探测是否出现的易渗透效应可能解释了$ t_c $ $ t_c $的电阻率。我们的分析证实了早期的结论：无法用紧急渗透过程来解释测得的副导率，但可以用GGL方法来解释。这些结果还提出了质疑的替代方案，包括来自新兴易渗透效应的最新提案。
The confrontation between the superconducting fluctuations and percolation effects as the origin of the in-plane paraconductivity in cuprate superconductors was earlier addressed at a quantitative level in the case of the optimally doped YBa$_2$Cu$_3$O$_{7-δ}$ (YBCO) compound. Using in-plane resistivity data from a high-quality YBCO thin film, we will extend these analyses to high reduced temperatures, in the case of the Gaussian-Ginzburg-Landau (GGL) approach for the conventional superconducting fluctuations, by considering the total energy cutoff. These data will also be analysed in terms of the mean field-approach of the effective-medium theory, to probe if emergent percolative effects may account for the resistivity rounding above $T_c$. Our analyses confirm earlier conclusions: the measured paraconductivity cannot be explained in terms of emergent percolation processes, but it may be accounted for in terms of the GGL approach. These results also call into question alternative scenarios, including a recent proposal derived from emergent percolative effects.
