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Anisotropy and temperature dependence of the optical conductivity in LaMnO_3

K. H. Ahn, A. J. Millis

Published 1999-01-14, updated 1999-05-04Version 2

A tight binding parameterization of the band structure, along with a mean field treatment of Hund, electron-electron, and electron-lattice couplings, is used to obtain the full optical conductivity tensor of LaMnO_3 as a function of temperature. We predict striking changes with temperature in the functional form and magnitude of the optical absorption. Comparison of our results to data will determine the Hund, electron-lattice, and electron-electron interactions.

Comments: 24 pages text(RevTex file) and 10 figures(ps file), submitted to Phys. Rev. B (1 new chapter, 4 new figures added with new calculations)
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