Interlayer Registry Determines the Sliding Potential of Layered Metal Dichalcogenides: The case of 2H-MoS2

Abstract

We provide a simple and intuitive explanation for the interlayer sliding energy landscape of metal dichalcogenides. Based on the recently introduced registry index (RI) concept, we define a purely geometrical parameter which quantifies the degree of interlayer commensurability in the layered phase of molybdenum disulphide (2HMoS2). A direct relation between the sliding energy landscape and the corresponding interlayer registry surface of 2H-MoS2 is discovered thus marking the registry index as a computationally efficient means for studying the tribology of complex nanoscale material interfaces in the wearless friction regime.

13 pages, 7 figures

References in corpus (4)

• Designing electrical contacts to MoS${}_2$ monolayers: A computational study
• Stacking and Registry Effects in Layered Materials: The Case of Hexagonal Boron Nitride
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• Nanotubes Motion on Layered Materials: A Registry Perspective
• Sliding properties of Transition Metal Dichalcogenide bilayers