Colloquium Event

Video from Jie Shan, Cornell University - “Electrons in 2D semiconductor moiré superlattices”

Date
Tue May 18th 2021, 4:30pm

Video Link

 

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.