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Theoretical investigation reveals temperature-dependent critical current density in magnesium diboride, suggesting new insights into superconducting behavior.
In this study, we present a theoretical investigation into the temperature-dependent critical current density of MgB₂ superconductors. Using the Ginzburg-Landau theory, we explore the behavior of this superconductor within the framework of a free energy model, which has been adapted from the type-1.5 superconductor model. The theoretical calculations derived from this model are then compared with experimental data obtained for MgB₂ superconductors. The results demonstrate a notable correlation between the theoretical predictions and the experimental findings, offering new insights into the temperature-dependent properties of MgB2 and potentially advancing the understanding of its superconducting behavior.
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Changjan et al. (2025) studied this question.
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