  In this work we study the intercalation of monolayer phosphorene with
nitrogen, lithium and calcium for exploring prospects of spintronic
applications. The electronic and the magnetic properties of the intercalated
structure are investigated via density functional theory to obtain the band
structure and the spin polarized density of states. Albeit the band structure
data show vanishing band gap, a noticeable difference emerges in the densities
of the up and the down spin states induced by the intercalants. To evaluate the
performance of the intercalated phosphorene, the spintronic order parameter,
measuring the asymmetry among the up and the down spin densities of states, is
computed which clearly shows evolution of improved spintronic properties at
large intercalant densities. Further, larger atomic numbers of the intercalants
seem to aid the performance of phosphorene as a spintronic material.
