Room temperature magnetism on the zigzag edges of phosphorene nanoribbons

Phosphorene, as a promising candidate of the post-graphene, has been synthesized recently. it is a monolayer black phosphorus with a puckered honeycomb lattice structure possessing a limit band gap and high carrier mobility. In our recent article, we employ the non-perturbative numeric methods of large-scale quantum Monte-Carlo (QMC) simulations, determinant quantum Monte-Carlo and the ground state constrained path quantum Monte-Carlo simulations repectively, to investigate the edge magnetism in the bulk insulating phosphorene nanoribbons. We find that relatively weak interactions can lead to remarkable edge magnetism in the phosphorene nanoribbons. Strong ferromagnetic correlations along the zigzag edges are revealed by the ground state constrained path quantum Monte-Carlo simulations, and a high Curie temperature up to room temperature is shown by the limit temperature determinant quantum MonteCarlo calculations .