Magnetic Reversal of an Artificial Square Ice: Dipolar Correlation and Charge Ordering
Journal Article
·
· New Journal of Physics
OSTI ID:1041592
Magnetic reversal of an artificial square ice pattern subject to a sequence of magnetic fields applied slightly off the diagonal axis is investigated via magnetic force microscopy of the remanent states that result. Sublattice independent reversal is observed via correlated incrementally pinned flip cascades along parallel dipolar chains, as evident from analysis of vertex populations and dipolar correlation functions. Weak dipolar interactions between adjacent chains favour antialignment and give rise to weak charge ordering of 'monopole' vertices during the reversal process.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
- Sponsoring Organization:
- USDOE SC OFFICE OF SCIENCE (SC)
- DOE Contract Number:
- DE-AC02-98CH10886
- OSTI ID:
- 1041592
- Report Number(s):
- BNL-95341-2011-JA; R&D Project: NC-001; TRN: US1202682
- Journal Information:
- New Journal of Physics, Vol. 13, Issue 10
- Country of Publication:
- United States
- Language:
- English
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