Half-metallic Antiferromagnet Sheets in Sr4M2O6CrFeAs2 (M=Sc, Cr) and Their Bulk Form

Shu-Jun Hu, Xiao Hu

We reveal by first-principles calculations that in iron pnictides Sr4M2O6CrFeAs2 (M=Sc, Cr) the two-dimensional CrFeAs2 layers exhibit a robust band structure of half-metallic anti…