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Magnetic dipolar ordering on geometrically frustrated brick-shaped lattices

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  • Li, Ying
  • Wang, Tian-Xing

Abstract

The magnetic ordering of frustrated arrays of nanoscale islands can be strongly influenced by the array patterns. We theoretically present three kinds of artificial geometrically frustrated systems with different brick-shaped geometries, defined as brick-shaped lattices, and investigate their magnetic dipolar ordering at the ground state using the Monte Carlo method. The simulated results show that the magnetic ordering of three brick-shaped frustrated lattices depends strongly on the strength of dipolar interactions, depending on the lattice spacing. It is found that the long-range dipolar interactions tend to suppress the long-range ordered state and induce the short-range quasi-ice state at each vertex of the lattices. In addition, the correlations for neighboring spin pairs are closely related to not only the dipolar coupling strength but also the geometry of the lattices.

Suggested Citation

  • Li, Ying & Wang, Tian-Xing, 2011. "Magnetic dipolar ordering on geometrically frustrated brick-shaped lattices," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 390(12), pages 2388-2394.
    • Handle: RePEc:eee:phsmap:v:390:y:2011:i:12:p:2388-2394
    DOI: 10.1016/j.physa.2011.02.012
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