Near-Fermi electronic structure of La$_{2-2x}$Sr$_{1+2x}$Mn$_{2}$O$_{7}$ revealed by ARPES

Angle-resolved photoemission experiments were performed on the bi-layer manganite La$_{2-2x}$Sr$_{1+2x}$Mn$_{2}$O$_{7}$ as a function of doping and temperature. High resolution and sensitivity allows us to observe the fine details including bi-layer splitting, dispersion kinks, electron-phonon coupling, and pseudogaps. We discuss new insights into the underlying physics of these compounds, as well as a comparison of some of these properties to what is observed in the cuprates.