Conductive behavior of metal hydride under high pressure

抄録

The conductive behavior of metal hydride Li_5_MoH_11_ was investigated under high pressure in a Diamond anvil cell (DAC). The sample was insulator at ambient pressure. With the increasing of pressure, the resistance decreased. The time lapse phenomenon was observed under 77 GPa. The conductive behavior changed from semiconducting to metallic behavior after keeping the sample at room temperature for 48 days. Then the sample showed metallic behavior above 1.9 K. With the increasing of pressure, the sample showed semiconducting behavior again under 92-105 GPa above 1.9 K. At 120 GPa, the sample showed semiconducting behavior from 300 K to 40 K and changed to metallic behavior below 40 K. The sample showed no superconductivity up to 120 GPa.