Lateral Interfaces of Transition Metal Dichalcogenides: A Stable Tunable One-Dimensional Physics Platform

Abstract

We study in-plane lateral heterostructures of commensurate transition-metal dichalcogenides, such as MoS${}_2$-WS${}_2$ and MoSe${}_2$-WSe${}_2$, and find interfacial and edge states that are highly localized to these regions of the heterostructure. These are one-dimensional (1D) in nature, lying within the bandgap of the bulk structure and exhibiting complex orbital and spin structure. We describe such heteroribbons with a three-orbital tight-binding model that uses first principles and experimental parameters as input, allowing us to model realistic systems. Analytical modeling for the 1D interfacial bands results in long-range hoppings due to the hybridization along the interface, with strong spin-orbit couplings. We further explore the Ruderman-Kittel-Kasuya-Yosida indirect interaction between magnetic impurities located at the interface. The unusual features of the interface states result in effective long-range exchange non-collinear interactions between impurities. These results suggest that transition-metal dichalcogenide interfaces could serve as stable, tunable 1D platform with unique properties for possible use in exploring Majorana fermions, plasma excitations and spintronics applications.

arXiv comment12 pages, 7 figures

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Cited by in corpus (14)

• Quantum Spin-Valley Hall Kink States: From Concept to Materials Design
• Lateral heterostructures and one-dimensional interfaces in 2D transition metal dichalcogenides
• Lateral Interfaces of Transition Metal Dichalcogenides: A Stable Tunable One-Dimensional Physics Platform
• Spin-valley system in a gated MoS${}_2$-monolayer quantum dot
• Velocity-determined anisotropic behaviors of RKKY interaction in 8-\textit{Pmmn} borophene
• Reversible edge spin currents in antiferromagnetically proximitized dichalcogenides
• Competing long-range interactions and spin vector chirality in spin-chains
• RKKY interaction in one-dimensional flat-band lattices
• Selective generation and amplification of RKKY interactions by P-N interface
• Tunable Contact Resistance in Transition Metal Dichalcogenide Lateral Heterojunctions
• Non-Equilibrium First-Order Exciton Mott Transition at Monolayer Lateral Heterojunctions Visualized by Ultrafast Microscopy
• Interface Dark Excitons at Sharp Lateral Two-Dimensional Heterostructures
• Spin polarization in Lateral two-dimensional Heterostructures
• Lateral Graphene-Metallene Interfaces at the Nanoscale