Fig. 4: Temperature dependent electrical resistance of the LuH2±xNy samples at changing pressures.
From: Observation of non-superconducting phase changes in nitrogen doped lutetium hydrides

a Temperature dependence of resistivity at ambient pressure. Top inset shows the optical micrograph of LuH2±xNy sample with gold electrodes attached by silver paste. b Room temperature resistance of sample-I (top) and sample-II (bottom) at different pressures. The shading line is a guide to the eyes. c, d Evolution of the resistance with pressure at temperature ranging from 300 K to 1.8 K during cooling down process of sample-I (run 1) and sample-II (run 3), respectively.