2D Materials – Physics of van der Waals [hetero]structures
DFG Priority program 2244
Topological effects in graphene/2D polymer superlattices
Xinliang Feng, TU Dresden, xinliang.feng (at) tu-dresden.de [webpage]
Thomas Heine, TU Dresden, thomas.heine (at) tu-dresden.de [webpage]
Thomas Weitz, Georg-August-Universität Göttingen, tweitz (at) uni-goettingen.de [webpage]
We will explore heterostructures made from vertical stacks of graphene and crystalline 2D polymers, atomically-thin, highly crystalline 2D lattices with micron-scale flake size that are formed by stitching molecular building blocks together. The symmetry of the building blocks imposes the lattice type, the building blocks can carry magnetic centers. The coupling can lead to electronically isolated building blocks, or to fully conjugated 2D lattices with ballistic transport of highly mobile charge carriers. Via the proximity effect, the C2DP will impose a superlattice onto graphene, which can alter its electronic and phononic properties.
We employ a wide range of experimental and theoretical methods, including advanced material transfer techniques, quantum transport, scanning near-field microscopy, nanoscale scanning spectroscopy, orthogonal tight-binding hamiltonians, density-functional theory (DFT), DFT based tight-binding, and quasiparticle methods.