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Putative magnetic quantum criticality in (Sr1−xLax)3Ir2O7

Vale, JG; Hunter, EC; (2018) Putative magnetic quantum criticality in (Sr1−xLax)3Ir2O7. Physical Review B , 98 (10) , Article 100406 (R). 10.1103/PhysRevB.98.100406. Green open access

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(Sr1−x Lax)3Ir2O7 undergoes a bulk insulator-to-metal transition 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.

Type: Article
Title: Putative magnetic quantum criticality in (Sr1−xLax)3Ir2O7
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevB.98.100406
Publisher version: https://doi.org/10.1103/PhysRevB.98.100406
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/10057269
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