Metal insulator transition in SrIrO3 Ultra-Thin Films examined by ionic liquid gating

ORAL

Abstract

Perovskite SrIrO3 (SIO) is a narrow-band semimetal, which combines strong spin-orbit coupling and electron correlations. This system has attracted much attention because it is at the verge of a Mott transition. Epitaxial SIO ultra-thin-layers show a thickness dependent metal-insulator transition (MIT) which is controlled by strain. The insulating state exhibits a strong temperature dependence of the resistance, hysteretic-magnetoresistance and anomalous Hall effect at low temperature, indicating ferromagnetic order. We have explored MIT in SIO ultrathin-layers by using Electric Double Layer (EDL) techniques, that employ ionic liquid as gate dielectric. We have simultaneously measured longitudinal (magneto) resistance and Hall effect across this transition to address whether the MIT is band-width or carrier-density-controlled.

*Funding by spanish AEI grant MAT 2017 87134 C02

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Presenters

  • Jacobo Santamaria

    • GFMC, Dpto. Física de Materiales, Universidad Complutense de Madrid, Spain
    • Universidad Complutense de Madrid. Spain
    • Grupo de Física de Materiales Complejos, Dpt. Física de Materiales, Universidad Complutense de Madrid, 28040 Madrid, Spain

Authors

  • Fernando Gallego

    • Universidad Complutense de Madrid. Spain

  • Javier Tornos

    • Complutense University
    • Universidad Complutense de Madrid. Spain

  • Fabian Cuellar

    • GFMC, Dpto. Física de Materiales, Universidad Complutense de Madrid, Spain
    • Universidad Complutense de Madrid. Spain
    • Grupo de Física de Materiales Complejos, Dpt. Física de Materiales, Universidad Complutense de Madrid, 28040 Madrid, Spain

  • Mariona Cabero

    • Universidad Complutense de Madrid. Spain

  • Alberto Rivera-Calzada

    • Universidad Complutense de Madrid. Spain

  • Juan I. Beltran

    • Complutense University
    • Universidad Complutense de Madrid. Spain

  • M. Carmen Muñoz

    • Instituto de Ciencia de Materiales de Madrid, ICMM-CSIC
    • ICMM-CSIC, Spain
    • Instituto de Ciencia de Materiales de Madrid ICMM-CSIC

  • F.J. Mompean

    • Instituto de Ciencia de Materiales de Madrid ICMM-CSIC

  • Mar García-Hernández

    • ICMM-CSIC, Consejo Superior de Investigaciones Científicas
    • Instituto de Ciencia de Materiales de Madrid ICMM-CSIC

  • Carlos Leon

    • Complutense University
    • Universidad Complutense de Madrid. Spain

  • Jacobo Santamaria

    • GFMC, Dpto. Física de Materiales, Universidad Complutense de Madrid, Spain
    • Universidad Complutense de Madrid. Spain
    • Grupo de Física de Materiales Complejos, Dpt. Física de Materiales, Universidad Complutense de Madrid, 28040 Madrid, Spain