摘要: In this work, the resistivity and magnetization of Bi2Ir2O7 are investigated under hydrostatic
pressure. At ambient pressure, the resistivity of Bi2Ir2O7 exhibits a metallic behavior with the
decrease of temperature. When the pressure is applied, a metal-insulator phase transition at low
temperature is induced under a pressure of #24; 0.48 GPa. The metal-insulator phase transition temperature
(TMI ) increases linearly with pressure as dTMI/dP = 3.4 #6;0.3 K/GPa. The temperature
dependence of resistivity [#26;(T)] in the pressure-induced insulating phase exhibits a thermal activation
behavior (#26; = #26;0eΔE=kBT ), where the thermal activation energy (ΔE) increases monotonously
with the pressure. Meanwhile, the magnetization is enhanced by the pressure, which indicates an
enhancement of magnetic ordering. The results suggest that localization occurs due to the magnetic
ordering induced by the pressure, which confirms the magneto-electronic coupling in Bi2Ir2O7