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Determination of the local structure of Sr<sub>2−x</sub>M<sub>x</sub>IrO<sub>4</sub> (M = K, La) as a function of doping and temperature
The local structure of correlated spin-orbit insulator Sr$_{2-x}$M$_x$IrO$_4$ (M = K, La) has been investigated by Ir L$_3$-edge extended x-ray absorption fine structure measurements. The measurements were performed as a function of temperature for different dopings induced by substitution of Sr with La or K. It is found that Ir-O …