$μ$SR study of the quantum dynamics in the frustrated $S=3/2$ kagome bilayers

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dc.creatorBono, David
dc.creatorMendels, P.
dc.creatorCollin, G.
dc.creatorBlanchard, N.
dc.creatorBert, F.
dc.creatorAmato, A.
dc.creatorBaines, C.
dc.creatorHillier, A. D.
dc.date2004-09-10
dc.date2004-09-13
dc.date.accessioned2026-07-07T03:00:31Z
dc.date.available2026-07-07T03:00:31Z
dc.descriptionWe present $μ$SR experiments in the $S=3/2$ kagome bilayer compound Ba$_{2}$Sn$_{2}$ZnGa$_{10-7p}$Cr$_{7p}$O$_{22}$ (BSZCGO$(p)$) and compare it to the isostructural SrCr$_{9p}$Ga$_{12-9p}$O$_{19}$ (SCGO$(p)$), including for the latter new results for $p\geq0.89$. Quantum-dynamical low energy magnetic excitations are evidenced in this novel compound. We study the evolution of the muon relaxation rate with $p$, $T$ and field. A phenomenological model for the muon relaxation based on sporadic dynamics due to spin excitations in a singlet sea proposed by Uemura \emph{et al.} [Phys. Rev. Lett. \textbf{73}, 3306 (1994)]. is extended to all fields and $T$-range. Its connexion to the RVB picture is discussed, and we argue that such coherent states might mediate the interactions between "impurities" which induce the spin glass freezing.
dc.description4 figures, only minor changes as compared to previous version
dc.identifierhttps://arxiv.org/abs/cond-mat/0409257
dc.identifierhttp://arxiv.org/abs/cond-mat/0409257
dc.identifierPhysical Review Letters 93 (2004) 187201
dc.identifierdoi:10.1103/PhysRevLett.93.187201
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/24831
dc.subjectStrongly Correlated Electrons
dc.title$μ$SR study of the quantum dynamics in the frustrated $S=3/2$ kagome bilayers
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