Tc(p)依赖性模式与巨大的'1/8异常' - 在La2-xBaxCuO4和YBa2Cu3O6+delta中观察到的新性质在室温下
An echo of the low-temperature phase competition and 1/8 dip in room-temperature properties of cuprate HTSCs
AI总结：
研究发现室温下La2-xBaxCuO4和YBa2Cu3O6+delta的水合过程中，质量变化与Tc(p)依赖性模式一致，包括'1/8异常'，为高温超导理论发展提供新见解。
摘要：
铜基高温超导体（HTSCs）表现出超导转变温度Tc(p)与载流子浓度p之间的碗形依赖关系，最大值出现在p=0.16处。在p≈1/8附近观察到Tc的凹陷（'1/8异常'），与CuO2平面中的电荷和自旋有序有关。通过研究室温下La2-xBaxCuO4和YBa2Cu3O6+delta的水合过程及其受高频磁场影响，发现HTSC样品在水合初期阶段出现异常质量变化。对于两种研究化合物，质量变化与浓度p的关系几乎精确地复制了相应的Tc(p)依赖性模式，包括'1/8异常'。这种在室温下展现高温超导系统低温度特征的表现令人着迷。本实验结果将对进一步发展HTSC理论有所帮助。
英文摘要：
Cuprate high-temperature superconductors (HTSCs) exhibit a characteristic dome-shaped dependence of the superconducting transition temperature on the charge carrier concentration, Tc(p), featuring a maximum at optimal doping p = 0.16. Near the p = 1/8 composition, a sharp suppression ("dip") of Tc occurs - conventionally referred to as the "1/8 anomaly" - which is widely attributed to charge and spin ordering in the CuO2 planes. Here, we investigate the room temperature hydration of La2-xBaxCuO4 and YBa2Cu3O6+delta under a high-frequency magnetic field and report anomalous weight changes during the initial stage of the process. For both compounds, the doping dependence of these weight fluctuations closely mirrors their respective Tc(p) profiles, including the signature "1/8 anomaly". The prominent manifestation of these characteristically low-temperature electronic features at room temperature provides critical insights into the stability of high-energy electronic correlations. These findings may offer a novel foundation for the development of theoretical models of cuprate superconductivity.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
