Abstract
Improving the critical temperature (TC), critical magnetic field (HC), and critical current (JC) of superconducting materials has always been one of the most significant challenges in the field of superconductivity, but progress has been slow over the years. Based on the concept of injecting energy to enhance electron pairing states, in this study, we introduce green-light GaN p-n junction particles (center wavelength 550 nm) as inhomogeneous phases into MgB2 superconducting materials, forming a smart meta-superconductors structure. Leveraging the electroluminescent properties of p-n junctions, we excite and reinforce Cooper pairs, enhancing the superconducting properties of the MgB2 material. Experimental results demonstrate that compared to pure MgB2 samples, the critical transition temperature (TC) has increased by 1.2 K, the critical current (JC) has increased by 52.8%, and the Meissner effect (HC) shows significant improvement in its diamagnetic properties. This phenomenon of enhanced superconducting performance can be explained by the coupling between superconducting electrons and evanescent waves.
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This research was supported by the National Natural Science Foundation of China for Distinguished Young Scholar under Grant No. 50025207.
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Conceptualization and methodology, XZ; software, YQ, DC, and CS; validation, YQ, YL, and DC; formal analysis, YQ, HC, and YL; investigation, YQ, DC, CS, YL, and QH; resources, XZ; data curation, YQ, YL, and MS., writing and original draft preparation, YQ; writing, reviewing, and editing of the manuscript, YQ and XZ; visualization, YZ, QH, and MS; supervision, XZ; project administration, XZ; funding acquisition, XZ; All authors have read and agreed to the published version of the manuscript.
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Qi, Y., Chen, D., Li, Y. et al. Green-light p-n junction particle inhomogeneous phase enhancement of MgB2 smart meta-superconductors. J Mater Sci: Mater Electron 35, 424 (2024). https://doi.org/10.1007/s10854-024-12231-1
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DOI: https://doi.org/10.1007/s10854-024-12231-1