High Efficiency in Large Supercurrent Rectification with Superconducting Coil
The study proposes a coil-shaped superconducting wire device to achieve a large superconducting diode effect (SDE) by compensating an external magnetic field with the coil's self-generated field. Experiments on Sn10-Pb90 solder wires showed high rectification efficiency, reaching 79% and 84%, with critical current differences of 140 A and 125 A, respectively. This demonstrates a viable design for developing high-current superconducting power electronics.