Metal-insulator transition with ferromagnetic background in the two-orbital model for manganites*

The complex spin, electron and phonon dynamics of manganese oxides continues to attract attention. In this talk, we present results of unbiased Monte Carlo simulations with fermionic exact diagonalization of the two-orbital model with Jahn-Teller phonons at filling x=1/3 on lattice sizes up to 15x15. We identify a region in the finite-temperature phase diagram with a metal-insulator transition upon increasing electron-phonon coupling. In the metal the spin background is ferromagnetic (FM) with uniform charge order, whereas the insulator shows diagonal stripes while retaining the FM background. We report resistivity and magnetization measurements alongside with spin and charge structure factors.