A15 Nb${}_3$Si -- A "high" Tc superconductor synthesized at a pressure of one megabar and metastable at ambient conditions

Jinhyuk Lim, J. S. Kim, Ajinkya C. Hire +6

A15 Nb${}_3$Si is, until now, the only high temperature superconductor produced at high pressure (~110 GPa) that has been successfully brought back to room pressure conditions in a m…