Machine-Learning-Accelerated Metallene Stabilization from High-Throughput Sandwich Modeling
Year: 2026
Type: preprint
Abstract: Metallenes have appealing properties, but stabilizing them in a monolayer phase poses synthesis challenges. A recent experiment showed that the van der Waals squeezing method can stabilize certain metallenes in a MoS2 sandwich. This pioneering work motivates systematic studies, but such studies are experimentally impractical, while first-principles modeling remains prohibitive. Here, using universal machine-learning interatomic potentials, we constructed 1620 metallene sandwich heterostructures containing 6 different sandwich layers and 45 metals. We performed phonon calculations, which revealed 1208 dynamically stable structures and narrowed them to 331 after structural filtering. We found that Se-based transition-metal dichalcogenides stabilize metallenes effectively. Specifically, hexagonal and buckled hexagonal crystal lattices exhibit the greatest stability. We further evaluated the thermal stability of selected heterostructures with density-functional theory molecular dynamics simulations at room temperature. By uncovering the physical and chemical factors that govern metallenes stabilization, our results provide systematic insights to guide and accelerate synthesis for future applications.
Source: arXiv (Cornell University)
Authors: Bagheri, Mohammad, Koskinen, Pekka
Institution: University of Jyväskylä
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7172419700