High-temperature superconductivity is a phenomenon that occurs in certain materials at extremely low temperatures. These materials are able to conduct electricity with zero resistance, making them extremely efficient. The highest known critical temperature for a superconducting material is around -135 degrees Celsius.
Some of the emerging trends in high-temperature superconductivity include the use of cuprates for high-temperature superconductors, the use of iron-based superconductors, and the use of chalcogenides for high-temperature superconductors.