Electronic properties, low-energy Hamiltonian and superconducting instabilities in CaKFe${}_4$As${}_4$

Felix Lochner, Felix Ahn, Tilmann Hickel +1

We analyze the electronic properties of the recently discovered stoichiometric superconductor CaKFe${}_4$As${}_4$ by combining an ab initio approach and a projection of the band struct…