发表机构
University of British Columbia（不列颠哥伦比亚大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究通过三种电化学装置合成BKBO晶体，发现三电极配置能实现更尖锐的超导转变，并可通过过电位控制化学取代，最终获得全体积迈斯纳效应的超导晶体。
AI 中文摘要
在这项工作中，我们展示了使用三种不同实验装置配置电化学合成BKBO晶体的结果。这些配置在物理变量的控制程度上有所不同，从两电极配置逐步发展到使用高取向铂对电极的三电极配置。通过对所收集晶体在超导转变处磁化率的温度依赖性进行系统分析，我们观察到，对于最全面的三电极配置，超导转变的锐利程度提高了一个数量级。此外，化学取代的水平可以通过相对于参比电极的过电位值来控制。我们证明，利用这种技术，可以实现具有尖锐转变温度的全体积迈斯纳效应的超导晶体。
英文摘要
In this work we show the results of electrochemical synthesis of BKBO crystals using three different experimental setup configurations. The setups differ between each other by varying level of control over physical variables and progressing from a two-electrode to a three-electrode configuration using highly oriented platinum counter electrode. By systematic analysis of the temperature dependence of the magnetic susceptibility at the superconducting transition of the collected crystals we observe that an order of magnitude sharper superconducting transition is achieved for the most comprehensive three-electrode setup. In addition, the level of chemical substitution can be controlled by the value of the overpotential versus reference electrode. We demonstrate that with this technique a full volume Meissner effect can be achieved with a sharp transition temperature for the superconducting crystal.
Comments18 pages 6 figures
