LuH2±xNy does not exhibit near-ambient superconductivity.
Researchers have concluded the absence of near-ambient superconductivity in nitrogen-doped lutetium hydride (LuH2±xNy) under pressures below 40.1 GPa. The study used a high pressure and high temperature synthesis technique to obtain LuH2±xNy and observed a gradually improved metallic behavior without showing superconductivity down to 2 K. Temperature dependence of magnetization under high pressures shows a very weak positive signal between 100 and 320 K, and the magnetization increases with magnetic field at 100 K, all of which are not expected for superconductivity at 100 K.