Tunable magnetism in bilayer transition metal dichalcogenides
arXiv:2404.11911 · doi:10.1103/PhysRevMaterials.8.034003
Abstract
Twist between neighboring layers and variation of interlayer distance are two extra ways to control the physical properties of stacked two-dimensional van der Waals materials without alteration of chemical compositions or application of external fields, compared to their monolayer counterparts. In this work, we explored the dependence of the magnetic states of the untwisted and twisted bilayer 1T-VX (X = S, Se) on the interlayer distance by density functional theory calculations. We find that, while a magnetic phase transition occurs from interlayer ferromagnetism to interlayer antiferromagnetism either as a function of decreasing interlayer distance for the untwisted bilayer 1T-VX or after twist, richer magnetic phase transitions consecutively take place for the twisted bilayer 1T-VX as interlayer distance is gradually reduced. Besides, the critical pressures for the phase transition are greatly reduced in twisted bilayer 1T-VX compared with the untwisted case. We derived the Heisenberg model with intralayer and interlayer exchange couplings to comprehend the emergence of various magnetic states. Our results point out an easy access towards tunable two-dimensional magnets.
arXiv comment8 pages, 4 figures
References in corpus (22)
- Layer-dependent Ferromagnetism in a van der Waals Crystal down to the Monolayer Limit
- Discovery of intrinsic ferromagnetism in 2D van der Waals crystals
- Moire bands in twisted double-layer graphene
- Gate-tunable Room-temperature Ferromagnetism in Two-dimensional FeGeTe
- Emergent ferromagnetism near three-quarters filling in twisted bilayer graphene
- Electrical Control of 2D Magnetism in Bilayer CrI3
- Evolution of Interlayer Coupling in Twisted MoS2 Bilayers
- Tunable Correlated Chern Insulator and Ferromagnetism in Trilayer Graphene/Boron Nitride Moiré Superlattice
- Localization of Dirac electrons by Moire patterns in graphene bilayers
- Pressure-controlled interlayer magnetism in atomically thin CrI3
- Effect of magnetic frustration on nematicity and superconductivity in Fe chalcogenides
- Metallic vanadium disulfide nanosheets as a platform material for multifunctional electrode applications
- Pressure dependence of the magic twist angle in graphene superlattices
- Interface coupling in twisted multilayer graphene by resonant Raman spectroscopy of layer breathing modes
- Absence of ferromagnetism in VSe caused by its charge density wave phase
- Magnetic Transition in Monolayer VSe2 via Interface Hybridization
- Bethe-Slater-curve-like behavior and interlayer spin-exchange coupling mechanisms in two-dimensional magnetic bilayers
- Proximity-induced ferromagnetism and chemical reactivity in few layers VSe2 heterostructures
- Pressure induced magnetism in rotated graphene bilayers
- Exotic dielectric behaviors induced by pseudo-spin texture in magnetic twisted bilayer
- Tunable band gap in twisted bilayer graphene
- Site-selective insulating phase in twisted bilayer Hubbard model