Export citation

Export citation

Choose format for download:

Download Citation

    Strain-Modulated Slater-Mott Crossover of Pseudospin-Half Square-Lattice in (SrIrO3)1/(SrTiO3)1 Superlattices

    Junyi Yang1,*, Lin Hao1,†, Derek Meyers2,§, Tamene Dasa3, Liubin Xu3, Lukas Horak4, Padraic Shafer5, Elke Arenholz5,6, Gilberto Fabbris7 et al.

    Yongseong Choi7, Daniel Haskel7, Jenia Karapetrova7, Jong-Woo Kim7, Philip J. Ryan7, Haixuan Xu3, Cristian D. Batista1, Mark P. M. Dean2, and Jian Liu1,‡

    • 1Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
    • 2Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, New York 11973, USA
    • 3Department of Material Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
    • 4Department of Condensed Matter Physics, Charles University, Ke Karlovu 5, 121 16 Prague, Czech Republic
    • 5Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
    • 6Department of Materials Science & Engineering, University of California, Berkeley, California 94720, USA
    • 7Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois, 60439, USA

    • *Corresponding author. jyang43@vols.utk.edu
    • †Corresponding author. lhao3@utk.edu
    • ‡Corresponding author. jianliu@utk.edu
    • §Present address: Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078, USA.

    Phys. Rev. Lett. 124, 177601 – Published 29 April, 2020

    DOI: https://doi.org/10.1103/PhysRevLett.124.177601

    Abstract

    We report on the epitaxial strain-driven electronic and antiferromagnetic modulations of a pseudospin-half square-lattice realized in superlattices of (SrIrO3)1/(SrTiO3)1. With increasing compressive strain, we find the low-temperature insulating behavior to be strongly suppressed with a corresponding systematic reduction of both the Néel temperature and the staggered moment. However, despite such a suppression, the system remains weakly insulating above the Néel transition. The emergence of metallicity is observed under large compressive strain but only at temperatures far above the Néel transition. These behaviors are characteristics of the Slater-Mott crossover regime, providing a unique experimental model system of the spin-half Hubbard Hamiltonian with a tunable intermediate coupling strength.

    Physics Subject Headings (PhySH)

    Authorization Required

    We need you to provide your credentials before accessing this content.

    Supplemental Material (Subscription Required)

    References (Subscription Required)

    Outline

    Information

    Sign In to Your Journals Account

    Filter

    Filter

    Article Lookup

    Enter a citation