activity
20062023
most citedNearly-flat bands with nontrivial topology

954 citations · 7.3k across the 85 of their papers we have counts for

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45 papers · 1 filter

cond-mat.str-el2023

Polariton-Induced Unconventional Superconductivity and Emergent SU(2) Symmetry in Moire flat bands

Kai Sun, Hui Deng

We propose a polariton-moiré coupled system to realize an exact solvable model of strongly correlated superconductors. The polariton condensate induces intervalley attraction betwe…

cond-mat.str-el2023★ 29 cited

Phases of (2+1)D SO(5) non-linear sigma model with a topological term on a sphere: multicritical point and disorder phase

Bin-Bin Chen, Xu Zhang, Yuxuan Wang +2

Novel critical phenomena beyond the Landau-Ginzburg-Wilson paradigm have been long sought after. Among many candidate scenarios, the deconfined quantum critical point (DQCP) consti…

cond-mat.str-el2023★ 5 cited

Ubiquitous nematic Dirac semimetal emerging from interacting quadratic band touching system

Hongyu Lu, Kai Sun, Zi Yang Meng +1

Quadratic band touching (QBT) points are widely observed in 2D and 3D materials, including bilayer graphene and Luttinger semimetals, and attract significant attention from theory…

cond-mat.str-el2023★ 22 cited

Evolution from quantum anomalous Hall insulator to heavy-fermion semimetal in magic-angle twisted bilayer graphene

Cheng Huang, Xu Zhang, Gaopei Pan +4

The ground states of twisted bilayer graphene (TBG) at chiral and flat-band limit with integer fillings are known from exact solutions, while their dynamical and thermodynamical pr…

cond-mat.str-el2022★ 27 cited

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…

cond-mat.str-el2022★ 29 cited

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…