(Sr1−xLax)3Ir2O7 undergoes a bulk insulator-to-metal transition (IMT) at x≈0.04. Through careful analysis of previously published data (x=0.053,0.061,0.076), we find an extended region below the Debye temperature in which the resistivity appears to scale linearly with temperature. Meanwhile resonant (in)elastic x-ray scattering data (x=0.065) suggest a possible crossover from quantum paramagnetic to quantum critical phenomenology between 100 and 200~K. We put this into context with other results, and propose a possible phase diagram as a function of doping.
@article{arxiv.1804.02991,
title = {Putative magnetic quantum criticality in (Sr$_{\text{1-x}}$La$_{\text{x}}$)$_{\text{3}}$Ir$_{\text{2}}$O$_{\text{7}}$},
author = {James G Vale and Emily C Hunter},
journal= {arXiv preprint arXiv:1804.02991},
year = {2018}
}