Jihang Zhu

TL;DR: In this paper, a quantum anomalous Hall effect was observed in twisted bilayer graphene showing Hall resistance quantized to within.1\% of the von Klitzing constant at zero magnetic field.

TL;DR: The findings suggest that correlated insulators are favored when a moiré flat band is spectrally isolated, and are consistent with a mean-field picture in which insulating states are established by breaking both spin and valley symmetries at 1/4 and 3/4 band filling and valley polarization alone at1/2 band filling.

TL;DR: Non-volatile electrical switching of magnetic order in an orbital Chern insulator is experimentally demonstrated using a moiré heterostructure and analysis shows that the effect is driven by topological edge states.

TL;DR: A superconducting quantum interference device is used to image stray magnetic fields in twisted bilayer graphene aligned to hexagonal boron nitride, and a magnetization of several Bohr magnetons per charge carrier is found, demonstrating that the magnetism is primarily orbital in nature.

TL;DR: In this article, a low-energy continuum model for phonons was proposed to understand the structural, optical and electronic properties of large moire supercells and successfully captures the essential experimental observations.