Physics – Condensed Matter – Materials Science
Scientific paper
1999-04-26
Physics
Condensed Matter
Materials Science
12 pages; Includes 5 figures
Scientific paper
10.1103/PhysRevB.60.11439
The low-temperature spin dynamics of doped manganites have been analyzed within a tight-binding model, the parameters of which are estimated by mapping the results of ab initio density functional calculations onto the model. This approach is found to provide a good description of the spin dynamics of the doped manganites, observed earlier within the ab initio calculations. Our analysis not only provides some insight into the roles of the eg and the t2g states but also indicates that the oxygen p states play an important role in the spin dynamics. This may cast doubt on the adaptability of the conventional model Hamiltonian approaches to the analysis of spin dynamics of doped manganites.
Mahadevan Priya
Solovyev Igor V.
Terakura Kiyoyuki
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