Quantum and classical dynamics in complex one-dimensional antiferromagnets

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dc.creatorZheludev, A.
dc.creatorMaslov, S.
dc.creatorYokoo, T.
dc.creatorAkimitsu, J.
dc.creatorRaymond, S.
dc.creatorNagler, S. E.
dc.date2000-06-22
dc.date.accessioned2026-07-07T02:37:59Z
dc.date.available2026-07-07T02:37:59Z
dc.descriptionOf great recent interest in condensed matter physics are phenomena of coexistence of quantum and classical properties in the same material. Such duality occurs in certain mixed-spin antiferromagnets composed of quantum spin chains interacting through ``auxiliary'' magnetic ions. In this category are linear-chain rare earth nickelates that exhibit a seemingly paradoxical co-existence of long-range magnetic order and one-dimensional gapped quantum spin excitations at low temperatures. In the present paper we propose a unified physical description of these compounds, supported by recent neutron diffraction and inelastic scattering studies. Our basic concept is the effective separation between low-frequency classical and high-frequency quantum spin correlations. This interpretation enables experimental measurements of some previously inaccessible fundamental properties of quantum spin chains, and predicts new exotic magnetic excitations and mechanisms of long-range ordering in complex quantum magnets.
dc.description6 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0006350
dc.identifierhttp://arxiv.org/abs/cond-mat/0006350
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/16503
dc.subjectStrongly Correlated Electrons
dc.titleQuantum and classical dynamics in complex one-dimensional antiferromagnets
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