Coexistence of long-range magnetic ordering and superconductivity in FeSe/EuTiO<sub>3</sub> heterostructure

ORAL

Abstract

Spin degree of freedom has played a key role in unconventional superconductivities. FeSe monolayer superconductors, with the highest transition temperature in Fe-based superconductors, remain not magnetically ordered, while spin density waves and nematicity have been observed in bulk FeSe. We grow heterostructures of FeSe on (001) antiferromagnetic EuTiO3 (ETO) using molecular beam epitaxy. Transport measurements showed clear anomalous Hall effect in both ETO and FeSe/ETO samples. Simultaneously, superconducting transition was also observed in FeSe films on ETO. Our work provides a new platform for the interplay of spins and superconductivity, which may promote integration of superconductors in new spintronics.

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Presenters

  • Chong Liu

    • University of British Columbia
    • Quantum material institute, University of British Columbia
    • Stewart Blusson Quantum Matter Institute, University of British Columbia

Authors

  • Chong Liu

    • University of British Columbia
    • Quantum material institute, University of British Columbia
    • Stewart Blusson Quantum Matter Institute, University of British Columbia

  • Hyungki Shin

    • Department of Physics, University of British Columbia
    • Stewart Blusson Quantum Matter Institute, University of British Columbia
    • University of British Columbia

  • Ryan Roemer

    • University of British Columbia
    • Stewart Blusson Quantum Matter Institute, University of British Columbia

  • Ke Zou

    • University of British Columbia
    • Department of Physics, University of British Columbia
    • Department of Physics & Astronomy, Stewart Blusson Quantum Matter Institute, The University of British Columbia
    • Stewart Blusson Quantum Matter Institute, University of British Columbia