Growth and stability of Pb intercalated phases under graphene on SiC

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2020-12-17
Authors
Chen, Shaojiang
Thiel, Patricia
Conrad, E.
Tringides, Michael
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Ames National LaboratoryPhysics and AstronomyMaterials Science and EngineeringChemistry
Abstract

Graphene intercalation is a novel way to control graphene's band structure and generate two-dimensional quantum materials with unusual spintronic and electronic properties. Despite its importance, information about the intercalation mechanism is lacking, especially the role of low density domain boundaries between regions of graphene of different thickness. With high resolution surface diffraction we have systematically studied Pb intercalation on epi-graphene grown on SiC, with domain boundaries between buffer and single layer graphene. By examining the evolution of different diffraction spots as a function of temperature, the location of Pb and stability of the intercalated phases underneath were determined.

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