Antiferromagnetic order in multi-band Hubbard models for iron-pnictides

Tobias Schickling, Florian Gebhard, Jörg Bünemann

We investigate multi-band Hubbard models for the three iron 3$d$-$t_{2g}$ bands and the two iron 3$d$-$e_g$ bands in $\mathrm{LaOFeAs}$ by means of the Gutzwiller variational theor…