Video from Jie Shan, Cornell University - “Electrons in 2D semiconductor moiré superlattices”
Stanford University
APPLIED PHYSICS/PHYSICS COLLOQUIUM
Tuesday, May 18, 2021
4:30 p.m. via Zoom
https://stanford.zoom.us/j/91567558718
Password: EMail dmoreau [at] stanfor.edu (dmoreau[at]stanfor[dot]edu) for password
Jie Shan
Cornell University
“Electrons in 2D semiconductor moiré superlattices”
When two van der Waals materials of slightly different orientations or lattice constants are overlaid, a moiré pattern emerges. The moiré pattern introduces a new length scale, many times the lattice constant of the original materials, for Bragg scattering of Bloch electrons in each layer. This gives rise to moiré minibands and rich emergent phenomena. In this talk I will discuss recent experiments on angle-aligned semiconductor heterobilayers, which exhibit remarkable correlated insulating states. I will also discuss the prospect of using moiré superlattices as a Hubbard model quantum simulator.