Emergence of noncollinear magnetic ordering in small magnetic clusters: Mn${}_n$ and As@Mn${}_n$

Abstract

Using first-principles density functional calculations, we have studied the magnetic ordering in pure Mn${}_n$ ($n=2-$10, 13, 15, 19) and As@Mn${}_n$ ($n=1-$10) clusters. Although, for both pure and doped manganese clusters, there exists many collinear and noncollinear isomers close in energy, the smaller clusters with $n⩽$5 have collinear magnetic ground state and the emergence of noncollinear ground states is seen for $n⩾$6 clusters. Due to strong $p-d$ hybridization in As@Mn${}_n$ clusters, the binding energy is substantially enhanced and the magnetic moment is reduced compared to the corresponding pure Mn${}_n$ clusters.

10 Pages and 5 Figures

References in corpus (3)

• Structure, electronic properties and magnetic transition in manganese clusters
• Positional Disorder, Spin-Orbit Coupling and Frustration in GaMnAs
• Large Magnetic Moments of Arsenic-Doped Mn Clusters and their Relevance to Mn-Doped III-V Semiconductor Ferromagnetism

Cited by in corpus (2)

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• Engineering the magnetic properties of the Mn${}_{13}$ cluster by doping