2 papers
cond-mat.mes-hall2024
Emergent Symmetry and Valley Chern Insulator in Twisted Double-Bilayer Graphene
Yimeng Wang, G. William Burg, Biao Lian +4
Theoretical calculations show that twisted double bilayer graphene (TDBG) under a transverse electric field develops a valley Chern number 2 at charge neutrality. Using thermodynam…
cond-mat.mes-hall2024
Independently Tunable Flat Bands and Correlations in a Graphene Double Moiré System
Yimeng Wang, Jihang Zhu, G. William Burg +6
We report on a double moiré system consisting of four graphene layers, where the top and bottom pairs form small-twist-angle bilayer graphene, and the middle interface has a large…