research

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

Abstract

A realistic modeling of manganites should include the Coulomb repulsion between ege_g electrons, the Hund's rule coupling to t2gt_{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, insulating-like paramagnetic phase is determined by correlated electrons which are-due to strong correlations-easily trapped as Jahn-Teller polarons.Comment: 4 pages, 3 figure

    Similar works

    Full text

    thumbnail-image

    Available Versions

    Last time updated on 02/01/2020