High-temperature ferromagnetism in two-dimensional material MnSn originated from interlayer coupling

Abstract

MnSn monolayer synthesized recently is a novel two-dimensional ferromagnetic material with a hexagonal lattice, in which three Mn atom come together to form a trimer, making it remarkably different from other magnetic two-dimensional materials. Most impressively, there happens a sharp increase of Curie temperature from 54 K to 225 K when the number of layers increase from 1 to 3. However, no quantitative explanation is reported in previous studies. Herein, by means of first-principle calculations method and Monte carlo method, we demonstrate that strong interlayer ferromagnetic coupling is the essential role in enhancing its critical temperature, which act as a magnetic field to stabilize the ferromagnetism in the MnSn multilayers.

References in corpus (10)

• Layer-dependent Ferromagnetism in a van der Waals Crystal down to the Monolayer Limit
• Discovery of intrinsic ferromagnetism in 2D van der Waals crystals
• A linear response approach to the calculation of the effective interaction parameters in the LDA+U method
• Ising-Type Magnetic Ordering in Atomically Thin FePS3
• Room Temperature Intrinsic Ferromagnetism in Epitaxial Manganese Selenide Films in the Monolayer Limit
• Viewpoint: Opportunities and challenges of two-dimensional magnetic van der Waals materials: magnetic graphene?
• Calculating critical temperatures for ferromagnetic order in two-dimensional materials
• Synthesis, Engineering, and Theory of 2D van der Waals Magnets
• Ferromagnetic MnSn monolayer epitaxially grown on silicon substrate
• Achieving high-temperature ferromagnetism by means of magnetic ions dimerization