Interrelation between the Optical Conductivity and Crystal Field Splitting in Monolayer Manganites
K. Rościszewski and A.M. Oleś
M. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, PL-30-059 Kraków, Poland
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We introduce an effective model for correlated eg electrons which reproduces qualitatively the evolution of magnetic order in monolayer manganites when correlated wave functions are used. Here we address recent optical conductivity measurements suggesting that the splitting between the occupied and empty eg states is very large in LaSrMnO4, contrary to what is expected for the effective model. We argue that no contradiction was found but several simple-minded one-atom-based expectations concerning crystal-field splitting and optical conductivity are in error.
DOI: 10.12693/APhysPolA.115.107
PACS numbers: 75.47.Lx, 75.10.Lp, 63.20.Pw