Chiral response of twisted bilayer graphene
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T. Stauber, T. Low and G. Gómez-Santos Phys. Rev. Lett. 120, 046801 (2018) We present an effective (minimal) theory for chiral two-dimensional materials. These materials possess an electromagnetic coupling without exhibiting a topological gap. As an example, we study the response of doped twisted bilayers, unveiling unusual phenomena in the…