The high pressure pre-distorts the lattice making it easier for cooper pairs to form. A cooper pair allows an electron to essiantly be in two places at once,

The high pressure pre-distorts the lattice making it easier for cooper pairs to form. A cooper pair allows an electron to essiantly be in two places at once, which causes superconductivity: An electron in a metal normally behaves as a free particle. The electron is repelled from other electrons due to their negative charge, but it also attracts the positive ions that make up the rigid lattice of the metal. This attraction distorts the ion lattice, moving the ions slightly toward the electron, increasing the positive charge density of the lattice in the vicinity. This positive charge can attract other electrons. At long distances, this attraction between electrons due to the displaced ions can overcome the electrons' repulsion due to their negative charge, and cause them to pair up. https://en.wikipedia.org/wiki/Cooper_pair https://en.wikipedia.org/wiki/Cooper_pair