Cobalt intercalation at the graphene/iridium(111) interface: influence of rotational domains, wrinkles and atomic steps

Abstract

Using low-energy electron microscopy, we study Co intercalation under graphene grown on Ir(111). Depending on the rotational domain of graphene on which it is deposited, Co is found intercalated at different locations. While intercalated Co is observed preferentially at the substrate step edges below certain rotational domains, it is mostly found close to wrinkles below other domains. These results indicate that curved regions (near substrate atomic steps and wrinkles) of the graphene sheet facilitate Co intercalation and suggest that the strength of the graphene/Ir interaction determines which pathway is energetically more favorable.

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• Electronic structure of Graphene/Co interfaces
• Cobalt intercalation at the graphene/iridium(111) interface: influence of rotational domains, wrinkles and atomic steps
• Graphene as a Mechanically Active, Deformable Two-Dimensional Surfactant
• Thermally Activated Processes for Ferromagnet Intercalation in Graphene-Heavy Metal Interfaces
• How to induce superconductivity in epitaxial graphene $via$ remote proximity effect through an intercalated gold layer
• Wrinkles of graphene on Ir(111): Macroscopic network ordering and internal multi-lobed structure
• Intercalating cobalt between graphene and iridium (111): a spatially-dependent kinetics from the edges
• Engineering two-dimensional materials from single-layer NbS${}_2$
• Periodic arrays of intercalated atoms in twisted bilayer graphene: an \it{ ab initio} investigation
• Confined step-flow growth of Cu intercalated between graphene and a Ru(0001) surface
• Graphene Layer Morphology as an Indicator of the Metals Alloy Formation at the Interface
• Unconventional magnetisation texture in graphene / cobalt hybrids