Topological defects and flux channels in artificial spin ice

ORAL

Abstract

Artificial spin ice, consisting of nanostructured magnetic elements, provides an excellent playground for exploring many-body phenomena. In our study, we focus on the influence of a complex geometrical transformation and the introduction of a topological defect within a small patch of the classical square ice lattice. By using magnetic imaging techniques, we unveil the existence of preferential magnetic flux channels. These channels persist due to the system's inherent topological nature that leads to a modification of the energy landscape. This topological transformation offers an exciting avenue for designing and fine-tuning controllable emergent flux channels, creating new opportunities for further research.

*Work at Yale University was funded by the U.S. Department of Energy (DOE), Office of Basic Energy Sciences, Materials Sciences and Engineering Division under Grant No. DE-SC0020162. Work at the University of Minnesota was supported by NSF through Grant No. DMR-2103711. The work of C. N. and M. S. was carried out under the auspices of the U.S. DOE through LANL, operated by Triad National Security, LLC (Contract No. 892333218NCA000001) and financed by DOE LDRD.

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Presenters

  • Nanny H Strandqvist

    • Yale University

Authors

  • Nanny H Strandqvist

    • Yale University

  • Anthony Hurben

    • Yale University

  • Yinchen Hao

    • Yale Univeristy

  • Ioan-Augustin Chioar

    • Yale University, Department of Applied Physics

  • Liu Yang

    • Yale University

  • Michael Saccone

    • Los Alamos National Laboratory

  • Nicholas S Bingham

    • University of Maine

  • Justin Ramberger

    • University of Minnesota
    • University of Minnesota - Twin Cities

  • Chris Leighton

    • University of Minnesota
    • University of Minnesota - Twin Cities

  • Cristiano Nisoli

    • Los Alamos National Laboratory

  • Peter Schiffer

    • Princeton University, Department of Physics
    • Princeton University
    • Yale University