Funct. Mater. 2021; 28 (4): 637-640

The possibility of using the photoacoustic effect to transform metals into a superconducting state at room temperature is discussed. Laser radiation with a wavelength ~5·10^-6 m and pulse duration ~10^-8 s when the laser power density is reached ~10¹² W/m²⁺ can cause in the volume of metal a shock wave up to ~10 GPa. The shock wave is accompanied by the generation of phonons characterized by a frequency that is an order of magnitude higher than the analogous parameter in metals, which increases the Debye temperature to a value ~10³⁺ K, and, accordingly, increases the value of the electron pairing constant λ >> 1. In accordance with the microscopic theory of superconductivity in metals (BKS theory), an increase in these parameters should lead to an increase in the critical temperature of the metal transition to the superconducting state. According to estimates, the transition temperature can reach a value close to room temperature.