The discovery of superconductivity of MgB₂ has attracted considerable research attention. Further exploration and discovery of MgB₂-like superconductors are important to determine the properties of MgB₂ and enhance our understanding of the superconducting mechanism. Four MgB₂-like MgXB₄ (X = Al, Li, Na, K) superconductors based on an MgB₂ structure were designed in this study. The electronic structure, phonon dispersion relationship, Eliashberg spectral function, electron-phonon coupling constant (λ), and superconductivity of MgXB₄ were investigated using a first-principles approach. The results indicated that MgXB₄ (X = Al, Li, Na, K) were dynamically stable and demonstrated metallic characteristics. Further study of the Eliashberg spectral function and electron-phonon coupling constant indicated that these compounds were superconductors. The calculated superconducting transition temperatures (T_C) of MgXB₄ (X = Al, Li, Na, K) were 0.12, 22.7, 28.1, and 30.4 K, respectively.

MgB ₂超导性的发现引起了相当大的研究关注。进一步探索和发现类似MgB ₂的超导体对于确定MgB ₂的性质和增强我们对超导机理的理解非常重要。在这项研究中设计了四个 基于MgB ₂结构的MgB ₂类MgXB ₄（X = Al，Li，Na，K）超导体。使用第一性原理研究了MgXB ₄的电子结构，声子色散关系，Eliashberg谱函数，电子-声子耦合常数（λ）和超导性。结果表明，MgXB ₄（X  = Al，Li，Na，K）是动态稳定的，并显示出金属特性。进一步研究Eliashberg光谱函数和电子-声子耦合常数表明，这些化合物是超导体。MgXB ₄（X  = Al，Li，Na，K）的计算出的超导转变温度（T _C）分别为0.12、22.7、28.1和30.4K 。