发表机构
Tokyo Metropolitan University; National Institute for Materials Science; Tohoku University; The University of Tokyo（东京都立大学; 国立材料研究所; 东北大学; 东京大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文提出线圈形超导导线器件，利用外磁场与线圈自身磁场的补偿作用，实现大超电流下的高整流效率，为超电流电力电子发展提供了新方案。
AI 中文摘要
超导二极管（SDs）是一类通过正向与反向电流方向间超导临界电流（Ic）的差异来实现超电流整流的器件。为推动这类SDs向实用化超导电力电子应用迈进，需同时具备高整流效率（η）与大临界电流差（ΔIc）。本文提出并验证了一种线圈形超导导线器件概念，利用外磁场（Hext）与线圈自身产生的磁场之间的补偿作用，诱导产生大的SD效应。对基于Sn10-Pb90焊锡线制备的线圈形SDs进行传输Ic测量，在Hext=500 Oe时，线圈#2实现了79%的η与140 A的ΔIc；在Hext=530 Oe时，线圈#3实现了84%的η与125 A的ΔIc，证实了大超电流下的高整流值。线圈形SDs中的大电流高效率SD效应，将对拓展超电流电力电子的应用领域极具价值。
英文摘要
Superconducting diodes (SDs) are devices that rectify supercurrent through the difference in the superconducting critical current (Ic) between forward and reverse current directions. For bringing such SDs closer to practical superconducting power electronics applications, a combination of both high rectification efficiency (η) and a large Ic difference (ΔIc) is required. Here, we propose and demonstrate a coil-shaped superconducting wire device concept to induce a large SD effect, arising from the compensation between an external magnetic field (Hext) and the field generated by the coil itself. From transport Ic measurements on coil-shaped SDs based on a Sn10-Pb90 solder wire, we achieved a η of 79% with a ΔIc of 140 A at Hext = 500 Oe (coil #2) and a η of 84% with a ΔIc of 125 A at Hext = 530 Oe (coil #3), confirming high rectification values at large supercurrents. The large-current high-efficiency SDE in the coil-shaped SDs will be highly useful for developing the potential field of supercurrent power electronics.
Comments25 page, 4 figures, SI
