23 citations · 23 across the 1 of their papers we have counts for
6 papers
Entanglement negativity spectrum of random mixed states: A diagrammatic approach
Hassan Shapourian, Shang Liu, Jonah Kudler-Flam +1
The entanglement properties of random pure states are relevant to a variety of problems ranging from chaotic quantum dynamics to black hole physics. The averaged bipartite entangle…
Ground State and Hidden Symmetry of Magic Angle Graphene at Even Integer Filling
Nick Bultinck, Eslam Khalaf, Shang Liu +3
In magic angle twisted bilayer graphene, electron-electron interactions play a central role resulting in correlated insulating states at certain integer fillings. Identifying the n…
Theory of correlated insulating behaviour and spin-triplet superconductivity in twisted double bilayer graphene
Jong Yeon Lee, Eslam Khalaf, Shang Liu +4
Two monolayers of graphene twisted by a small `magic' angle exhibit nearly flat bands leading to correlated electronic states and superconductivity, whose precise nature including…
Exceptional Surfaces in PT-Symmetric Photonic Systems
Hengyun Zhou, Jong Yeon Lee, Shang Liu +1
Exceptional points in non-Hermitian systems have recently been shown to possess nontrivial topological properties, and to give rise to many exotic physical phenomena. However, most…
Shift insulators: rotation-protected two-dimensional topological crystalline insulators
Shang Liu, Ashvin Vishwanath, Eslam Khalaf
We study a two-dimensional (2D) tight-binding model of a topological crystalline insulator (TCI) protected by rotation symmetry. The model is built by stacking two Chern insulators…
Nodal-line semimetals from Weyl superlattices
Jan Behrends, Jun-Won Rhim, Shang Liu +2
The existence and topological classification of lower-dimensional Fermi surfaces is often tied to the crystal symmetries of the underlying lattice systems. Artificially engineered…