Ferromagnetic van der Waals crystal VI3

Abstract

We report structural, physical properties and electronic structure of van der Waals (vdW) crystal VI3. Detailed analysis reveals that VI3 exhibits a structural transition from monoclinic C2/m to rhombohedral R-3 at Ts ~ 79 K, similar to CrX3 (X = Cl, Br, I). Below Ts, a long-range ferromagnetic (FM) transition emerges at Tc ~ 50 K. The local moment of V in VI3 is close to the high-spin state V3+ ion (S = 1). Theoretical calculation suggests that VI3 may be a Mott insulator with the band gap of about 0.84 eV. In addition, VI3 has a relative small interlayer binding energy and can be exfoliated easily down to few layers experimentally. Therefore, VI3 is a candidate of two-dimensional FM semiconductor. It also provides a novel platform to explore 2D magnetism and vdW heterostructures in S = 1 system.

7 pages, 5 figures, 3 tables

References in corpus (2)

• Electric Field Effect in Atomically Thin Carbon Films
• Van der Waals bonding in layered compounds from advanced first-principles calculations

Cited by in corpus (18)

• Improved current density and magnetisation reconstruction through vector magnetic field measurements
• Tuning Magnetism in Layered Magnet VI${}_3$: A Theoretical Study
• DyOCl: a rare-earth based two-dimensional van der Waals material with strong magnetic anisotropy
• Crystal Structures and Phase Transitions of the van-der-Waals Ferromagnet VI3
• Ferroic orders in two-dimensional transition/rare-earth metal halides
• Ab initio calculation of the effective Coulomb interactions in MX2 (M=Ti, V, Cr, Mn, Fe, Co, Ni; X=S, Se, Te): intrinsic magnetic ordering and Mott insulating phase
• Nonconventional screening of Coulomb interaction in two-dimensional semiconductors and metals: A comprehensive cRPA study of MX2 (M=Mo, W, Nb, Ta; X=S, Se, Te)
• FePd2Te2: An Anisotropic Two-Dimensional Ferromagnet with One-Dimensional Fe Chains
• Magnetic order and its interplay with structure phase transition in van der Waals ferromagnet VI${}_3$
• Electrical and thermal transport in van der Waals magnets 2H-M${}_x$TaS${}_2$ (M = Mn, Co)
• Two-dimensional ferromagnetic spin-orbital excitations in the honeycomb VI${}_3$
• Crystal structure evolution in the van der Waals transition metal trihalides
• Dynamical correlation enhanced orbital magnetization in VI${}_3$
• Magnetic interactions and spin excitations in van der Waals ferromagnet VI${}_3$
• Terahertz Magnetic and Lattice Excitations in van der Waals Ferromagnet VI3
• Computational studies on magnetism and ferroelectricity
• Evidence of temperature-dependent interplay between spin and orbital moment in van der Waals ferromagnet VI3
• High Curie Temperature Ferromagnetic Semiconductor: Bimetal Transition Iodide V${}_2$Cr${}_2$I${}_9$