Suppressed antiferromagnetic ordering and enhanced electrical conduction in doped iridate Sr2−xPrxIrO4

Hui Liu, Dandan Liang, Jian Bian, Yuan Feng, Yu Xie, Baolong Fang
2020 Materials Research Express  
Sr 2 IrO 4 has been shown to exhibit a novel J eff =1/2 Mott spin-orbit insulating state with antiferromagnetic ordering. In the present investigation, the effects of Pr substitution at Sr-site on structural, magnetic and electrical properties are studied in Sr 2 IrO 4 . Pr-doped samples still retain the insulating behavior, but with the increase of Pr doping concentration, the resistivity decreases. The magnetic properties show that long-range antiferromagnetic order is collapsed when the Pr
more » ... llapsed when the Pr doping content increases up to 20%, which may results from a competition between the AFM (Ir 5d electrons) and ferromagnetic (Pr 4 f electrons) coupling. In addition, Pr doping induces a spin glasslike state at low temperatures.
doi:10.1088/2053-1591/ab5f6d fatcat:bjn22so7i5hqrpxie3dushh6me