Pressure induced color change and evolution of metallic behavior in nitrogen-doped lutetium hydride

Ying-Jie Zhang, Xue Ming, Qing Li +6

By applying pressures up to 42 GPa on the nitrogen-doped lutetium hydride (LuH${}_{2\pm \text{x}}$N${}_y$), we have found a gradual change of color from dark-blue to pink-violet in the…