Abnormal conductivity in low-angle twisted bilayer graphene
Shuai Zhang, Aisheng Song, Lingxiu Chen, Chengxin Jiang, Chen Chen, Lei Gao, Yuan Hou, Luqi Liu, Tianbao Ma, Haomin Wang, Xi‐Qiao Feng, Qunyang Li
Abstract
≈ 5°, and then it drops notably upon further decrease in the twist angle. Revealed by density functional theory calculations and scanning tunneling microscopy, the abnormal behavior is attributed to the unusual reduction in average carrier density originating from local atomic reconstruction. The impact of atomic reconstruction on vertical conductivity is unique for low-angle twisted 2D van der Waals materials and provides a strategy for designing and optimizing their electronic performance.
Topics & Concepts
GrapheneConductivityBilayer grapheneMaterials scienceBilayerNanotechnologyCondensed matter physicsPhysicsChemistryMembraneBiochemistryQuantum mechanicsGraphene research and applicationsForce Microscopy Techniques and ApplicationsNanowire Synthesis and Applications