English

Putative magnetic quantum criticality in (Sr$_{\text{1-x}}$La$_{\text{x}}$)$_{\text{3}}$Ir$_{\text{2}}$O$_{\text{7}}$

Strongly Correlated Electrons 2018-10-03 v2

Abstract

(Sr1x_{1-x}Lax_x)3_3Ir2_2O7_7 undergoes a bulk insulator-to-metal transition (IMT) at x0.04x \approx \mathrm{0.04}. Through careful analysis of previously published data (x=0.053,0.061,0.076x=\mathrm{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=0.065x=\mathrm{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.

Keywords

Cite

@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}
}

Comments

Submitted to Physical Review B