Localization of strongly correlated electrons as Jahn-Teller polarons in 
manganites

Yang, Y. F.; Held, K.

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Localization of strongly correlated electrons as Jahn-Teller polarons in manganites

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Yang, Y. F.
Department Quantum Many-Body Theory (Walter Metzner), Max Planck Institute for Solid State Research, Max Planck Society;

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Held, K.
Department Quantum Many-Body Theory (Walter Metzner), Max Planck Institute for Solid State Research, Max Planck Society;

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Yang, Y. F., & Held, K. (2007). Localization of strongly correlated electrons as Jahn-Teller polarons in manganites. Physical Review B, 76(21): 212401.

Cite as: https://hdl.handle.net/21.11116/0000-000E-B635-9

Abstract

A realistic modeling of manganites should include the Coulomb repulsion between e(g) electrons, Hund's rule coupling to t(2g) spins, and Jahn-Teller phonons. Solving such a model by dynamical mean field theory, we report large magnetoresistances and spectra in good agreement with experiments. The physics of the unusual, insulatinglike paramagnetic phase is determined by correlated electrons which are-due to strong correlations-easily trapped as Jahn-Teller polarons.