2021/05/16 by T. T. Nhung Nguyen, Nguyen, T. T. Nhung, T. Sollfrank +8
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Graphene research and applications #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Quantum and electron transport phenomena #Surface and Thin Film Phenomena #cond-mat.mes-hall
paper · pdf · doi:10.48550/arxiv.2105.07482
arxiv created 2021/05/16 · openalex publication_date 2021/05/16 · arxiv updated 2021/05/18 · openalex created_date 2021/05/24 · openalex updated_date 2026/07/28
The stacking of different 2D materials provides a promising approach to realize new states of quantum matter. In this combined scanning tunneling microscopy (STM) and density functional theory (DFT) study we show that the structure in weakly bound, purely van der Waals (vdW) interacting systems is strongly influenced by screening and relaxation. We studied in detail the physisorption of lead phthalocyanine (PbPc) molecules on epitaxial monolayer graphene on SiC(0001) as well as on highly ordered pyrolytic graphite (HOPG), resembling truly 2D and anisotropic, semi-infinite 3D supports. Our analysis demonstrates that the different deformation ability of the vdW coupled systems, i.e. their actual thickness and buckling, triggers the molecular morphology and exhibits a proximity coupled band structure. It thus provides important implications for future 2D design concepts.