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.

–

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