Microscopic modelling of doped manganites
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Colossal magneto-resistance manganites are characterised by a complex interplay of charge, spin, orbital and lattice degrees of freedom. Formulating microscopic models for these compounds aims at meeting to conflicting objectives: sufficient simplification without excessive restrictions on the phase space. We give a detailed introduction to the electronic structure of manganites and derive a microscopic model for their low energy physics. Focussing on short range electron-lattice and spin-orbital correlations we supplement the modelling with numerical simulations.
20 pages, 10 figs, accepted for publ. in New J. Phys., Focus issue on Orbital Physics
20 pages, 10 figs, accepted for publ. in New J. Phys., Focus issue on Orbital Physics