Superconductivity at 262 K in Yttrium Superhydride at High Pressures

Superconductivity has been one of the most profound quantum phases in condensed matter physics. Efforts to identify and develop room temperature superconducting materials are an intensive area of research, motivated by both fundamental science and the prospects for applications. We report the synthesis and superconductivity in Yttrium superhydride with highest Tc of 262K at 183 GPa. The Tc is the highest ever recorded at this pressure. The superconductivity in Yttrium superhydride arises from clathrate based hydrogenic lattices. The electrical resistance measurements and magnetic field dependence transport measurement shows the clear indication of the observed superconductivity. Based on the Raman spectra, we suggest that YH6, is responsible observed superconductivity, which is in good agreement with recent theoretical studies. The hydrogen-rich materials are in the vicinity of achieving room temperature superconductivity.