MgN: a new promising material for spintronic applications

Details MgN: a new promising material for spintronic applications MgN: a new promising material for spintronic applications

2009-05-14

arxiv.org/abs/0905.2387v1

Physics

Condensed Matter

Materials Science

Scientific paper

Density functional theory calculations demonstrate that rocksalt MgN is a magnetic material at the verge of half-metallicity, with an electronic structure robust against strong correlations and spin-orbit interaction. Furthermore the calculated heat of formation describes the compound as metastable and suggests that it can be fabricated by tuning the relative Mg and N abundance during growth. Intriguingly the equilibrium lattice constant is close to that of MgO, so that MgN is likely to form as an inclusion during the fabrication of N-doped MgO. We then speculate that the MgO/MgN system may represent a unique materials platform for magnetic tunnel junctions not incorporating any transition metals.

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