Zhao Xiaopeng, Hai Qingyu, Shi Miao, Chen Honggang, Li Yongbo, Qi Yao
Smart Materials Laboratory, Department of Applied Physics, Northwestern Polytechnical University, Xi'an 710129, China.
Nanomaterials (Basel). 2022 Jul 28;12(15):2590. doi: 10.3390/nano12152590.
Increasing and improving the critical transition temperature (), current density () and the Meissner effect () of conventional superconductors are the most important problems in superconductivity research, but progress has been slow for many years. In this study, by introducing the p-n junction nanostructured electroluminescent inhomogeneous phase with a red wavelength to realize energy injection, we found the improved property of smart meta-superconductors MgB, the critical transition temperature increases by 0.8 K, the current density increases by 37%, and the diamagnetism of the Meissner effect also significantly improved, compared with pure MgB. Compared with the previous yttrium oxide inhomogeneous phase, the p-n junction has a higher luminescence intensity, a longer stable life and simpler external field requirements. The coupling between superconducting electrons and surface plasmon polaritons may be explained by this phenomenon. The realization of smart meta-superconductor by the electroluminescent inhomogeneous phase provides a new way to improve the performance of superconductors.
提高和改善传统超导体的临界转变温度（）、电流密度（）和迈斯纳效应（）是超导研究中最重要的问题，但多年来进展缓慢。在本研究中，通过引入具有红色波长的p-n结纳米结构电致发光非均匀相来实现能量注入，我们发现智能超导体MgB的性能得到了改善，与纯MgB相比，临界转变温度升高了0.8 K，电流密度增加了37%，迈斯纳效应的抗磁性也显著提高。与先前的氧化钇非均匀相相比，p-n结具有更高的发光强度、更长的稳定寿命和更简单的外部场要求。这种现象可能解释了超导电子与表面等离激元极化子之间的耦合。通过电致发光非均匀相实现智能超导体为提高超导体性能提供了一种新途径。
