Observation of room-temperature magnetic skyrmions in Pt/Co/Cu multilayers

ORAL

Abstract

Magnetic skyrmions are a promising candidate for high-density and energy-efficient information storage and processing. Magnetic multilayers systems Pt/Co/X (X= metallic element) provide an ideal platform to study skyrmions due to the rich tunability of magnetic properties. Here we report observation of room-temperature skyrmions in epitaxial grown [Pt/Co/Cu]5 multilayers on insulating substrates. The magnetic properties were characterized by magneto-optical Kerr effect (MOKE) and SQUID magnetometer measurements. The skyrmions were confirmed by Lorentz transmission electron microscopy (LTEM) and magnetic force microscope (MFM). Furthermore, by tunning Co layer thickness and periods number of multilayers, we are able to modify magnetic properties as well as skyrmions in multilayers.

*This work was supported by DARPA under Grant No. D18AP00008.

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Presenters

  • Ziling Li

    • Ohio State University

Authors

  • Ziling Li

    • Ohio State University

  • Shuyu Cheng

    • The Ohio State University, Department of Physics
    • Ohio State University

  • Nuria Bagues Salguero

    • Ohio State Univ - Columbus

  • Camelia Selcu

    • Ohio State University

  • Binbin Wang

    • Ohio State University - Columbus

  • Shekhar Das

    • Ohio State University
    • Ohio State Univ - Columbus

  • P Chris Hammel

    • Ohio State Univ - Columbus
    • The Ohio State University
    • Ohio State University

  • David W McComb

    • Ohio State University

  • Roland K Kawakami

    • Ohio State University