Why the magnetic interactions in Na$_{x}$CoO$_{2}$ are 3D

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dc.creatorJohannes, M. D.
dc.creatorMazin, I. I.
dc.creatorSingh, D. J.
dc.date2004-12-23
dc.date.accessioned2026-07-07T03:02:55Z
dc.date.available2026-07-07T03:02:55Z
dc.descriptionThe puzzle of 3D magnetic interactions in the structurally 2D layered oxide Na$_{x}$CoO$_2$ is addressed using first principles calculations and analysis of the exchange mechanisms. The calculations agree with recent neutron results, favoring AFM stacking of FM planes. Superexchange via direct O-O hopping and through intermediate Na $sp^2$ hybrids couples each Co to its nearest and six \textit{next}-nearest interplanar neighbors equally. The individual exchange constants are rather 2D, like the lattice itself, but due to multiple c-axis exchange paths, the magnetism becomes effectively 3D.
dc.description4 pages
dc.identifierhttps://arxiv.org/abs/cond-mat/0412663
dc.identifierhttp://arxiv.org/abs/cond-mat/0412663
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/25570
dc.subjectStrongly Correlated Electrons
dc.titleWhy the magnetic interactions in Na$_{x}$CoO$_{2}$ are 3D
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