Research Papers in Physics and Astronomy

 

Date of this Version

1-7-2019

Document Type

Article

Citation

PHYSICAL REVIEW B 99, 024406 (2019)

DOI: 10.1103/PhysRevB.99.024406

Comments

©2019 American Physical Society. Used by per mission.

Abstract

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.

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