An Overview of the 11 and 1111 Systems in Iron-Based Superconducting Materials

Since the discovery of superconductivity in 1911, significant progress has been made in the research and development of superconducting technology. This progress spans from low-temperature superconductivity to high-temperature superconductivity and from theoretical exploration to experimental verification. Scientists have continuously overcome challenges, laying a solid foundation for the practical application of superconducting technology. This paper introduces and analyzes a large and promising iron-based superconducting system. It explores the historical background, development process, and influencing factors of the 11 and 1111 systems. By examining these factors, the paper investigates their relatively unique superconducting properties, providing valuable insights and guidance for related research fields