Interlayer Electronic Coupling on Demand in a 2D Magnetic Semiconductor

Abstract

When monolayers of two-dimensional (2D) materials are stacked into van der Waals structures, interlayer electronic coupling can introduce entirely new properties, as exemplified by recent discoveries of moiré bands that host highly correlated electronic states and quantum dot-like interlayer exciton lattices. Here we show the magnetic control of interlayer electronic coupling, as manifested in tunable excitonic transitions, in an A-type antiferromagnetic 2D semiconductor CrSBr. Excitonic transitions in bilayer and above can be drastically changed when the magnetic order is switched from layered antiferromagnetic to the field-induced ferromagnetic state, an effect attributed to the spin-allowed interlayer hybridization of electron and hole orbitals in the latter, as revealed by GW-BSE calculations. Our work uncovers a magnetic approach to engineer electronic and excitonic effects in layered magnetic semiconductors.

16 pages, 4 figures, 10 pages SI

References in corpus (7)

• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• Observation of Moiré Excitons in WSe2/WS2 Heterostructure Superlattices
• Resonantly hybridised excitons in moiré superlattices in van der Waals heterostructures
• Magnetic Order and Symmetry in the 2D Semiconductor CrSBr
• Physical origin of giant excitonic and magneto-optical responses in two-dimensional ferromagnetic insulators
• Tuning Inelastic Light Scattering via Symmetry Control in 2D Magnet CrI${}_3$
• Non-uniform sampling schemes of the Brillouin zone for many-electron perturbation-theory calculations in reduced dimensionality

Cited by in corpus (23)

• Exciton-Coupled Coherent Magnons in a 2D Semiconductor
• Hidden low-temperature magnetic order revealed through magnetotransport in monolayer CrSBr
• Magneto-optics in a van der Waals magnet tuned by self-hybridized polaritons
• The bulk van der Waals layered magnet CrSBr is a quasi-1D material
• Tunable Exciton-Hybridized Magnon Interactions in a Layered Semiconductor
• Quasi 1D electronic transport in a 2D magnetic semiconductor
• Atomistic spin textures on-demand in the van der Waals layered magnet CrSBr
• Multistep magnetization switching in orthogonally twisted ferromagnetic monolayers
• Probing the spin dimensionality in single-layer CrSBr van der Waals heterostructures by magneto-transport measurements
• Spin waves and magnetic exchange Hamiltonian in CrSBr
• Probing defects and spin-phonon coupling in CrSBr via resonant Raman scattering
• Sensing the local magnetic environment through optically active defects in a layered magnetic semiconductor
• Visualizing Atomically-Layered Magnetism in CrSBr
• Spin Dynamics in van der Waals Magnetic Systems
• Raman scattering signatures of the strong spin-phonon coupling in the bulk magnetic van der Waals material CrSBr
• Gate-controlled Magnetotransport and Electrostatic Modulation of Magnetism in 2D magnetic semiconductor CrPS${}_4$
• Magnon-mediated exciton-exciton interaction in a van der Waals antiferromagnet
• Designing magnetic properties in CrSBr through hydrostatic pressure and ligand substitution
• Anisotropic Electron-Hole Excitation and Large Linear Dichroism in Two-Dimensional Ferromagnet CrSBr with In-Plane Magnetization
• Microscopic parameters of the van der Waals CrSBr antiferromagnet from microwave absorption experiments
• The first- and second-order magneto-optical effects and intrinsically anomalous transport in 2D van der Waals layered magnets CrXY (X = S, Se, Te; Y = Cl, Br, I)
• Unconventional pressure-driven metamagnetic transitions in topological van der Waals magnets
• Anisotropic Gigahertz Antiferromagnetic Resonances of the Easy-Axis van der Waals Antiferromagnet CrSBr