Room-temperature superconductor

A room-temperature superconductor is a hypothetical material capable of displaying superconductivity at temperatures above 0 °C (273 K; 32 °F), which are commonly encountered in everyday settings. As of 2023, the material with the highest accepted superconducting temperature was highly pressurized lanthanum decahydride, whose transition temperature is approximately 250 K (−23 °C) at 200 GPa.^[1][2]

At standard atmospheric pressure, cuprates currently hold the temperature record, manifesting superconductivity at temperatures as high as 138 K (−135 °C).^[3] Over time, researchers have consistently encountered superconductivity at temperatures previously considered unexpected or impossible, challenging the notion that achieving superconductivity at room temperature was infeasible.^[4][5] The concept of "near-room temperature" transient effects has been a subject of discussion since the early 1950s.