Lateral heterostructures and one-dimensional interfaces in 2D transition metal dichalcogenides

Area of Science:

• Materials Science
• Condensed Matter Physics
• Nanotechnology

Background:

• Two-dimensional (2D) materials enable the creation of hybrid heterostructures (HSs) with novel interfacial states.
• Interfaces can be 2D (vertical van der Waals stacks) or 1D (stitched adjacent monolayers).
• 1D interfaces are gaining research interest due to unique electronic and spin properties.

Purpose of the Study:

• To review and discuss advances in 1D heterojunctions.
• To focus on theoretical approaches for semiconducting transition metal dichalcogenides (TMDs).
• To explore characterization and utilization of interfacial states.

Main Methods:

• Theoretical modeling of 1D interfaces in TMDs (MX2).
• Analysis of interfacial states, including non-parabolic dispersion and spin-orbit effects.
• Investigation of interface properties influenced by edge geometry and strain.

Main Results:

• 1D interfaces exhibit unique 1D non-parabolic dispersion and strong spin-orbit effects.
• Interfacial states inherit properties from constituent 2D materials.
• Edge geometries and strain significantly affect interface properties and optical response.

Conclusions:

• 1D heterojunctions provide a promising platform for realizing 1D physics.
• Understanding interface characteristics is crucial for their application.
• This review serves as a resource for future theoretical and experimental studies in 1D interfaces.