Strain induced topological Hall effect of SrRuO<sub>3</sub> single-layered thin films

ORAL

Abstract

Topology in condensed matter physics has led to fruitful areas such as topological insulators, Majorana fermions and valleytronics. Among them, the topological Hall effect (THE) of magnetic materials has attracted much attention due to the discovery of magnetic skyrmions, a topologically protected spin texture that is promising for future magnetic/electronic devices. Recently, a THE has been observed at the interface between a ferromagnetic SrRuO3 (SRO) and a heavy metal SrIrO3 (SIO), although the spin texture of both bulk SRO and bulk SIO are topologically trivial. Here, we will demonstrate the discovery of an unexpected THE on perovskite SRO single-layered films stabilized by molecular beam epitaxy. We will show that the epitaxial strain in SRO films stabilizes a non-coplanar spin texture and leads to the topologically non-trivial phenomenon. SRO is a widely-used material in complex oxide heterostructures. Our results can potentially lead to major progresses in novel phenomena in SRO-based heterostructures as well as the applications of next generation all-oxide electronic and magnetic devices.

–

Presenters

  • Ludi Miao

    • Cornell University

Authors

  • Ludi Miao

    • Cornell University

  • Hari Nair

    • Cornell University
    • Department of Materials Science and Engineering, Kavli Institute at Cornell for Nanoscale Science, Cornell University

  • Nathaniel Schreiber

    • Cornell University

  • Jacob P Ruf

    • Cornell University
    • Department of Physics, Laboratory of Atomic and Solid State Physics, Kavli Institute at Cornell for Nanoscale Science, Cornell University

  • Yingfei Li

    • Cornell University

  • Cyrus Zeledon

    • Cornell University

  • Shengwei Jiang

    • Cornell University
    • Applied and Engineering Physics, Cornell University

  • Berit Goodge

    • Cornell University

  • Ismail El Baggari

    • Cornell University

  • Kin Fai Mak

    • Cornell University
    • Applied and Engineering Physics, Cornell University
    • Physics, Cornell University

  • Jie Shan

    • Cornell University
    • Applied and Engineering Physics, Cornell University
    • Applied and engineering physics, Cornell University

  • Lena Kourkoutis

    • Cornell University

  • Darrell G. Schlom

    • Cornell University
    • Cornell University, Ithaca, New York 14853, USA
    • Department of Materials Science and Engineering, Cornell University
    • Department of Materials Science and Engineering, Kavli Institute at Cornell for Nanoscale Science, Cornell University
    • Materials Science & Engineering, Cornell University
    • Department of Materials Science and Engineering,, Cornell University
    • Materials Science and Engineering, University of Cornell

  • Kyle M Shen

    • Cornell University
    • Department of Physics, Laboratory of Atomic and Solid State Physics, Kavli Institute at Cornell for Nanoscale Science, Cornell University