176 citations · 596 across the 25 of their papers we have counts for
5 papers · 1 filter
Quantum Monte Carlo sign bounds, topological Mott insulator and thermodynamic transitions in twisted bilayer graphene model
Xu Zhang, Gaopei Pan, Bin-Bin Chen +3
We show that for magic-angle twisted bilayer graphene (TBG) away from charge neutrality, although quantum Monte Carlo (QMC) simulations suffer from the sign problem, the computatio…
Thermodynamic characteristic for correlated flat-band system with quantum anomalous Hall ground state
Gaopei Pan, Hongyu Lu, Heqiu Li +4
While the ground state phase diagram of the correlated flat-band systems have been intensively investigated, the dynamic and thermodynamic properties of such lattice models are les…
Green's Function Approach to Interacting Higher-order Topological Insulators
Heqiu Li, Hae-Young Kee, Yong Baek Kim
The Bloch wave functions have been playing a crucial role in the diagnosis of topological phases in non-interacting systems. However, the Bloch waves are no longer applicable in th…
Finite-Frequency Topological Maxwell Modes in Mechanical Self-Dual Kagome Lattices
Hrishikesh Danawe, Heqiu Li, Kai Sun +1
In this Letter, an elastic twisted kagome lattice at a critical twist angle, called self-dual kagome lattice, is shown to exhibit peculiar finite-frequency topological modes which…
Magnetic-field Induced Topological Transitions and Thermal Conductivity in a Generalized Kitaev Model
Heqiu Li, Yong Baek Kim, Hae-Young Kee
Recent experiments on Kitaev spin liquid candidate materials reported non-monotonic behavior of thermal conductivity as a function of magnetic field, which lead to conflicting inte…