Robust intrinsic ferromagnetism in 2D half-metallic material MnAsS${}_4$

Abstract

Two-dimensional (2D) intrinsic half-metallic materials are of great interest to explore the exciting physics and applications of nanoscale spintronic devices, but no such materials have been experimentally realized. Using first-principles calculations based on density-functional theory (DFT), we predicted that single-layer MnAsS${}_4$ was a 2D intrinsic ferromagnetic (FM) half-metal. The half-metallic spin gap for single-layer MnAsS${}_4$ is about 1.46 eV, and it has a large spin splitting of about 0.49 eV in the conduction band. Monte Carlo simulations predicted the Curie temperature (\emph{T}${}_c$) was about 740 K. Moreover, Within the biaxial strain ranging from -5\% to 5\%, the FM half-metallic properties remain unchanged. Its ground-state with 100\% spin-polarization ratio at Fermi level may be a promising candidate material for 2D spintronic applications.

12 pages, 6 figures

References in corpus (3)

• Tunable Magnetism and Half-Metallicity in Hole-doped Monolayer GaSe
• Intrinsic magnetism in monolayer transition metal trihalides: a comparative study
• Strain-tunable magnetic order and electronic structure in 2D CrAsS${}_4$

Cited by in corpus (1)

• Strain Tunable Intrinsic Ferromagnetic in 2D Square CrBr${}_2$