Condensed Matter Physics Commons^™

Tuning The JEff = 1/2 Insulating State Via Electron Doping And Pressure In The Double-Layered Iridate Sr3Ir2O7, L. Li, P. P. Kong, Tongfei Qi, C. Q. Jin, Shujuan Yuan, Lance E. Delong, P. Schlottmann, Gang Cao

Physics and Astronomy Faculty Publications

Sr₃Ir₂O₇ exhibits a novel J_eff = 1/2 insulating state that features a splitting between J_eff = 1/2 and 3/2 bands due to spin-orbit interaction. We report a metal-insulator transition in Sr3Ir2O7 via either dilute electron doping (La³⁺ for Sr²⁺) or application of high pressure up to 35 GPa. Our study of single-crystal Sr₃Ir₂O₇ and (Sr_1−xLa_x)₃Ir₂O₇ reveals that application of high hydrostatic pressure P leads to a drastic reduction in the electrical resistivity by as much …