Magnetic polarons in doped 1D antiferromagnetic chain

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dc.creatorGonzález, I.
dc.creatorCastro, J.
dc.creatorBaldomir, D.
dc.creatorSboychakov, A. O.
dc.creatorRakhmanov, A. L.
dc.creatorKugel, K. I.
dc.date2003-09-15
dc.date.accessioned2026-07-07T02:53:26Z
dc.date.available2026-07-07T02:53:26Z
dc.descriptionThe structure of magnetic polarons (ferrons) is studied for an 1D antiferromagnetic chain doped by non-magnetic donor impurities. The conduction electrons are assumed to be bound by the impurities. Such a chain can be described as a set of ferrons at the antiferromagnetic background. We found that two types of ferrons can exist in the system. The ground state of the chain corresponds to the ferrons with the sizes of the order of the localization length of the electron near the impurity. The ferrons of the second type produce a more extended distortion of spins in the chain. They are stable within a finite domain of the system parameters and can be treated as excitations above the ground state. The ferrons in the excited states can appear in pairs only. The energy of the excited states decreases with the growth in density of impurities. This can be interpreted as a manifestation of an attractive interaction between ferrons.
dc.description6 pages, 5 figures, RevTex4, submitted to PRB
dc.identifierhttps://arxiv.org/abs/cond-mat/0309347
dc.identifierhttp://arxiv.org/abs/cond-mat/0309347
dc.identifierPhys. Rev. B 69 (2004) 224409
dc.identifierdoi:10.1103/PhysRevB.69.224409
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/22216
dc.subjectStrongly Correlated Electrons
dc.titleMagnetic polarons in doped 1D antiferromagnetic chain
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