Robust Superlubricity in Graphene/h-BN Heterojunctions
arXiv:1207.2588 · doi:10.1021/jz301758c
Abstract
The sliding energy landscape of the heterogeneous graphene/h-BN interface is studied by means of the registry index. For a graphene flake sliding on top of h-BN the anisotropy of the sliding energy corrugation with respect to the misfit angle between the two naturally mismatched lattices is found to reduce with the flake size. For sufficiently large flakes the sliding energy corrugation is expected to be at least an order of magnitude lower than that obtained for matching lattices regardless of the relative interlayer orientation thus resulting in a stable low-friction state. This is in contrast to the case of the homogeneous graphene interface where flake reorientations are known to eliminate superlubricty. Our results mark heterogeneous layered interfaces as promising candidates for dry lubrication purposes.
11 pages, 4 figures
References in corpus (10)
- Boron nitride substrates for high-quality graphene electronics
- STM Spectroscopy of ultra-flat graphene on hexagonal boron nitride
- Emergence of Superlattice Dirac Points in Graphene on Hexagonal Boron Nitride
- Van der Waals bonding in layered compounds from advanced first-principles calculations
- Self-Retracting Motion of Graphite Microflakes
- Energy gap tuning in graphene on hexagonal boron nitride bilayer system
- Superlubricity - a new perspective on an established paradigm
- Reversible modifications of linear dispersion - graphene between boron nitride monolayers
- Interlayer Registry Determines the Sliding Potential of Layered Metal Dichalcogenides: The case of 2H-MoS2
- Quantifying the Stacking Registry Matching in Layered Materials
Cited by in corpus (5)
- Superlubricity of epitaxial monolayer WS2 on graphene
- Stacking in incommensurate graphene/hexagonal-boron-nitride heterostructures based on ab initio study of interlayer interaction
- Current trends in the physics of nanoscale friction
- Finite-temperature phase diagram and critical point of the Aubry pinned-sliding transition in a 2D monolayer
- Kolmogorov-Crespi Potential For Multilayer Transition Metal Dichalcogenides: Capturing Structural Transformations In Moiré Superlattices