Spin Excitations in Half-Doped Manganites View Full Text


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Article Info

DATE

2012-02-03

AUTHORS

Ivon R. Buitrago, C. I. Ventura

ABSTRACT

We investigate magnetic excitations in half-doped colossal magnetoresistance manganites. In particular, we focus on spin excitations in the CE phase originally proposed by Goodenough (Phys. Rev. 100:564, 1955). Using a localized spin model, we calculated magnons for 3D-perovskite compounds such as La1−xMxMnO3, where M=Ca, Sr, Ba, and for their 2D-laminar counterparts. We compared them with predictions for the spin excitations corresponding to other phases proposed. For the laminar half-doped manganite La0.5Sr1.5MnO4, for which magnon measurements by inelastic neutron scattering exist, as well as an estimation of the magnetic couplings, our calculations agree well with the experimental data. More... »

PAGES

2303-2305

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s10948-012-1431-6

DOI

http://dx.doi.org/10.1007/s10948-012-1431-6

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1053436151


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