| In the class of superconducting Fe-pnictide compounds, both theory and experiment point to the FeAs layer as the focus for understanding their behavior. We investigate the inclusion of these layers in FeAs/GaAs heterostructures using ab initio density functional theory calculations to see whether the characteristic electronic and magnetic properties found in superconducting Fe-pnictides are reproduced. The effect of increasing Fe content on the magnetic and electronic properties is considered, in particular the characteristic Fermi surface nesting and magnetic ordering. |
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