Evolution of spin-wave excitations in ferromagnetic metallic manganites

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dc.creatorYe, F.
dc.creatorDai, Pengcheng
dc.creatorFernandez-Baca, J. A.
dc.creatorSha, Hao
dc.creatorLynn, J. W.
dc.creatorKawano-Furukawa, H.
dc.creatorTomioka, Y.
dc.creatorTokura, Y.
dc.creatorZhang, Jiandi
dc.date2005-12-16
dc.date.accessioned2026-07-07T06:53:24Z
dc.date.available2026-07-07T06:53:24Z
dc.descriptionNeutron scattering results are presented for spin-wave excitations of three ferromagnetic metallic $A_{1-x}A^{\prime}_{x}$MnO$_3$ manganites (where $A$ and $A^\prime$ are rare- and alkaline-earth ions), which when combined with previous work elucidate systematics of the interactions as a function of carrier concentration $x$, on-site disorder, and strength of the lattice distortion. The long wavelength spin dynamics show only a very weak dependence across the series. The ratio of fourth to first neighbor exchange ($J_4/J_1$) that controls the zone boundary magnon softening changes systematically with $x$, but does not depend on the other parameters. None of the prevailing models can account for these behaviors.
dc.descriptionSubmitted to Phys. Rev. Lett
dc.identifierhttps://arxiv.org/abs/cond-mat/0512368
dc.identifierhttp://arxiv.org/abs/cond-mat/0512368
dc.identifierPhys. Rev. Lett. 96, 047204 (2006)
dc.identifierdoi:10.1103/PhysRevLett.96.047204
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/105575
dc.subjectStrongly Correlated Electrons
dc.titleEvolution of spin-wave excitations in ferromagnetic metallic manganites
dc.typetext

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