Magnetic Properties of NbSi2N4, VSi2N4, and VSi2P4 Monolayers

Abstract

The recent demonstration of MoSi2N4 and its exceptional stability to air, water, acid, and heat has generated intense interest in this family of two-dimensional (2D) materials. Among these materials, NbSi2N4, VSi2N4, and VSi2P4 are semiconducting, easy-plane ferromagnets with negligible in-plane magnetic anisotropy. They thus satisfy a necessary condition for exhibiting a dissipationless spin superfluid mode. The Curie temperatures of monolayer VSi2P4 and VSi2N4 are determined to be above room temperature based on Monte Carlo and density functional theory calculations. The magnetic moments of VSi2N4 can be switched from in-plane to out-of-plane by applying tensile biaxial strain or electron doping.

References in corpus (8)

• Magnetic 2D materials and heterostructures
• Strain engineered direct-indirect band gap transition and its mechanism in 2D phosphorene
• Gate Tunable Quantum Oscillations in Air-Stable and High Mobility Few-Layer Phosphorene Heterostructures
• Quantum anomalous Hall effect in ferromagnetic transition metal halides
• High intrinsic lattice thermal conductivity in monolayer MoSi${}_2$N${}_4$
• Semiconductor-to-metal transition in bilayer MoSi${}_2$N${}_4$ and WSi${}_2$N${}_4$ with strain and electric field
• Comparison of first-principles methods to extract magnetic parameters in ultra-thin films: Co/Pt(111)
• Spontaneous graphitization of ultrathin cubic structures: A computational study

Cited by in corpus (4)

• MoSi${}_2$N${}_4$-like crystals -- the new family of two-dimensional materials
• Tunable valley and spin splittings in $\mathrm{VS}{\mathrm{i}}_2{\mathrm{N}}_4$ bilayer
• Intrinsic ferromagnetism and restrictive thermodynamic stability in MA${}_2$N${}_4$ and Janus VSiGeN${}_4$ monolayers
• Stable Ferromagnetism and High Curie Temperature in VGe${}_2$N${}_4$