Events at Physics |
Since the discovery of graphene via mechanical exfoliation, it has been shown that the electronic properties of solids can undergo dramatic changes when the material thickness is reduced to the atomic limit. Moreover, the properties of the 2D materials can be further tailored by stacking them with relative twist angles. Combining this designer material platform with the gate-defined nanostructures, the highly tunable local Hamiltonian allows a local probe to the rich underlying physics and a platform to study new mesoscopic quantum phenomena. In this talk, I will discuss our recent experiments in tuning valley-specific Berry curvature and band topology in bilayer graphene via gate-defined nanostructures and twist, towards investigating novel mesoscopic quantum physics and demonstrating new quantum device concepts.