Fermi-liquid-to-polaron crossover. II. Double exchange and the physics of colossal magnetoresistance
A. J. Millis, R. Mueller, Boris I. Shraiman
1996
Physical Review B (Condensed Matter)
We use the dynamical mean field method to study a model of electrons Jahn-Teller coupled to localized classical oscillators and ferromagnetically coupled to "core spins", which, we argue, contains the essential physics of the "colossal magnetoresistance" manganites Re_1-x A_x MnO_3. We determine the different regimes of the model and present results for the temperature and frequency dependence of the conductivity, the electron spectral function and the root mean square lattice parameter
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... ions. We compare our results to data, and give a qualitative discussion of important physics not included in the calculation. Extensive use is made of results from a companion paper titled: "On the Fermi Liquid to Polaron Crossover I: General Results".
doi:10.1103/physrevb.54.5405
pmid:9986499
fatcat:kzpbkfpjrzf7zo2o7hgqbuccza