Textured heterogeneity in square artificial spin ice

J. C.T. Lee, S. K. Mishra, V. S. Bhat, R. Streubel, B. Farmer, X. Shi, L. E. De Long, I. McNulty, P. Fischer, S. D. Kevan, S. Roy

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


We report evidence of spontaneous formation of a heterogeneous network of superdomains in two-dimensional square artificial spin ice nanostructures in externally applied magnetic fields. Coherent resonant soft-x-ray scattering from such textures gives rise to unique internal structure in Bragg peaks. The magnetic heterogeneity is locally disordered but has a zigzag texture at longer length scales. Our result suggests that the macroscopic magnetic texture is derived from the microscopic structure of the Dirac strings.

Original languageEnglish
Article number024406
JournalPhysical Review B
Issue number2
StatePublished - Jan 7 2019

Bibliographical note

Funding Information:
J.C.TL., R.S., P.F., and S.D.K. acknowledge support by the Director, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division, of the US Department of Energy (DOE), Contract No. DE-AC02-05-CH11231 within the Nonequilibrium Magnetic Materials Program (KC2204). This research used resources of these DOE Office of Science User Facilities: the Advanced Light Source (DE-AC02-05CH11231) and the Advanced Photon Source (DE-AC02-06CH11357). Work at the University of Oregon was partially supported by DOE, Office of Basic Energy Sciences, Materials Science and Engineering Division (DE-FG02-11ER46831). Research at the University of Kentucky was supported by DOE (DE-FG02-97ER45653) and the US National Science Foundation (DMR-1506979).

Publisher Copyright:
© 2019 American Physical Society.

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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