Scanning Nitrogen-Vacancy Center Magnetic Imaging of Skyrmions

ORAL

Abstract

Topological excitations in thin-film magnetic systems, known as skyrmions, have been proposed as the basis of near-future, high density and low power memory devices. Before practical devices based on these excitations can be realized, new materials must be designed that maximize skyrmion current-driven velocities, minimize the depinning current densities, and host nanoscale skyrmions at length scales competitive with existing technologies (<100 nm). In this work, we utilize a scanning probe based on the nitrogen-vacancy center in diamond to magnetically image skyrmions with high spatial resolution, revealing variation and fluctuation of their shape. We observe hints of the interplay between skyrmion domain wall dynamics and pinning sites, an understanding of which will be important for future device applications.

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Presenters

  • Matthew Pelliccione

    Physics, University of California Santa Barbara

Authors

  • Alec Jenkins

    Physics, University of California Santa Barbara

  • Guoqiang Yu

    University of California, Los Angeles, Univ of California - Los Angeles, Department of Electrical Engineering, UCLA, BeiHang University, Electrical Engineering, University of California Los Angeles

  • Susanne Baumann

    Physics, University of California Santa Barbara

  • Simon Meynell

    Physics and Atmospheric Science, Dalhousie University, Physics, University of California Santa Barbara

  • Matthew Pelliccione

    Physics, University of California Santa Barbara

  • Preeti Ovartchaiyapong

    Physics, University of California Santa Barbara

  • kang wang

    Electrical Engineering, University of California Los Angeles

  • Ania Jayich

    Physics, UC Santa Barbara, Physics, University of California - Santa Barbara, Physics, University of California Santa Barbara, Physics Department, Univ of California - Santa Barbara