High-Temperature Superconductors

High-Temperature Superconductors are materials that exhibit superconductivity at temperatures significantly higher than conventional superconductors. Many of these materials are complex copper-oxide or iron-based compounds. Unlike traditional superconductors, their behavior cannot be fully explained by standard theories. High-temperature superconductors show strong electronic correlations and unconventional pairing mechanisms. Their discovery opened new directions in condensed-matter physics. These materials hold promise for practical applications because they reduce the need for extreme cooling. Challenges remain in understanding their microscopic mechanisms and fabricating materials with stable performance. High-temperature superconductors are actively studied for applications in power transmission, magnetic levitation, and advanced electronics. They represent one of the most important unsolved problems in modern physics.