| Abstract: | The normal state of Iron chalcogenide superconductors show a range of unconventionalfeatures. Bad-metallic resistivity and proximity to insulating state manifest themselvesin spectral and transport responses. In particular, obervation of low-energy pseudogapfeature in the normal state raises the issue of the nature of processes underpinning itsemergence as well as its relation to unconventional superconductivity. Here, using theLDA+DMFT method, we show how correlation-induced orbital-selective pseudogap-like physicsunderpin these incoherent features in stoichimetric and electron-doped FeSesuperconductor. We discuss the pseudogap regime microscopically, along with implicationsfor the superconductive instability. |
