Systematic Design of Phonon-Engineered Superconductors: Optimizing Electron Pairing for High-Temperature Superconductivity

High-temperature superconductivity (HTS), occurring above 77 K, promises significant advancements in energy-efficient technologies. Despite extensive research, a comprehensive understanding of HTS remains elusive, and discovering new materials or mechanisms has been largely serendipitous. This study presents a novel explanation for HTS, focusing on manipulating phonon-mediated electron pairing through enhancing electron-phonon coupling and optimizing phonon density of states (DOS). The proposed approach provides a systematic pathway for designing materials exhibiting HTS. Experimental results confirm successful realization of HTS in a new class of materials, termed "phonon-engineered superconductors" (PESCs), offering a promising platform for future research and technological advancements.