Monte Carlo simulations of magnetic ordering in the fcc Kagome lattice

Abstract

Monte Carlo simulation results are reported on magnetic ordering in ABC stacked Kagomé layers with fcc symmetry for both XY and Heisenberg models which include exchange interactions with the eight near-neighbors. Well known degeneracies of the 2D system persist in the 3D case and analysis of the numerical data provides strong evidence for a fluctuation-driven first-order transition to well-defined long-range order characterized as the layered $q=0$ (120-degree) spin structure. Effects of varying the inter-layer coupling are also examined. The results are relevant to understanding the role of frustration in IrMn${}_3$ alloys widely used by the magnetic storage industry as thin-films in the antiferromagnetic pinning layer in GMR and TMR spin valves. Despite the technological importance of this structure, it has not previously been noted that the magnetic Mn-ions of fcc IrMn${}_3$ form Kagomé layers.

9 pages, 14 figures. Submitted to Phys. Rev. B

References in corpus (5)

• Octupolar ordering of classical kagome antiferromagnets in two and three dimensions
• Giant magnetic anisotropy of the bulk antiferromagnets IrMn and IrMn3
• Monte Carlo study of first-order transition in Heisenberg fcc antiferromagnet
• Fictitious excitations in the classical Heisenberg antiferromagnet on the kagome lattice
• Surface spin dynamics of antiferromagnetically coupled frustrated triangular films

Cited by in corpus (13)

• Anomalous Hall effect arising from noncollinear antiferromagnetism
• Magnetic damping modulation in $IrM{n}_3/N{i}_{80}F{e}_{20}$ via the magnetic spin Hall effect
• Classical dipoles on the kagome lattice
• The origin of exchange bias in multigranular non-collinear IrMn${}_3$/CoFe thin films
• Soliton-like magnetization textures in non-collinear antiferromagnets
• The atomistic origin of the athermal training effect in granular IrMn/CoFe bilayers
• Spin waves in the anisotropic fcc kagome antiferromagnet
• Continuous degeneracy of the fcc kagome lattice with magnetic dipolar interactions
• Impact of Dzyaloshinskii-Moriya and anisotropic exchange interactions on the cubic kagome antiferromagnets Mn${}_3$X and Mn${}_3$AB
• Impact of further-range exchange and cubic anisotropy on magnetic excitations in the fcc kagome antiferromagnet IrMn3
• Monte Carlo Simulations of ABC Stacked Kagome Lattice Thin Films
• Fully-frustrated octahedral antiferromagnets: emergent complexity in external field
• Observation of Spin Current Hermiticity