2025/02/24 by Guerrero, Pedro Alcázar, Nguyen, Viet-Hung, Cummings, Aron W. +2
#FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
paper · doi:10.48550/arxiv.2502.17069
We present a numerical study of three-layer graphene heterostructures in which the layers are twisted by the magic angle (∼1.1^∘) or by ∼30^∘ to form a graphene quasicrystal. The heterostacks are described using realistic structural relaxations and tight-binding Hamiltonians, and their transport properties are computed for both pristine and disordered systems containing up to ∼8 million atoms. Owing to the weak interlayer coupling, we resolve the hybridization between magic-angle flat bands and quasicrystalline states, which are modified in distinct ways across low- and high-energy windows, revealing a new hybrid electronic regime to explore.