Coherent dipolar correlations in the ground-state of Kagome frustrated antiferromagnets

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dc.creatorGov, Nir
dc.date2000-06-13
dc.date.accessioned2026-07-07T02:37:55Z
dc.date.available2026-07-07T02:37:55Z
dc.descriptionWe propose a new model for the nature of the low temperature phase of a geometrically frustrated antiferromgnet (AFM) with a Kagome lattice, SrCr$_{8-x}$Ga$_{4+x}$O$_{19}$. We propose that the long-range dipolar interaction between the magnetic Cr$^{3+}$ ions introduces correlations in their dynamics. The dipolar ground-state has the spins performing correlated zero-point oscillations in a coherent state with a well defined global phase and a complex order-parameter (i.e. Off-Diagonal Long Range Order). We calculate the magnon excitations of such a dipolar array and we find good agreement with the spin-wave velocities infered from measurements of the specific-heat. Various experimental properties of these materials are naturally explained by such a model.
dc.description7 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0006215
dc.identifierhttp://arxiv.org/abs/cond-mat/0006215
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/16474
dc.subjectCondensed Matter
dc.titleCoherent dipolar correlations in the ground-state of Kagome frustrated antiferromagnets
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