10 papers
Interaction-induced sign reversal of the orbital magnetic susceptibility in Chern insulators
Ke Huang, Xiao Li
The paper shows that electron interactions can reverse the sign of orbital magnetic susceptibility in Chern insulators, using a finite‑field Hartree‑Fock framework with a reverse P…
Tunable high-Chern-number Chern insulators in rhombohedral tetralayer graphene/hBN moiré superlattices
Chuanqi Zheng, Chushan Li, Ke Huang +17
Moiré superlattices based on rhombohedral multilayer graphene have emerged as a highly tunable platform for engineering correlated topological phases. Here, we systematically inve…
Interplay of disorder and interaction in quantum Hall systems: from fractional quantum Hall liquids to Wigner crystals and amorphous solids
Ke Huang, Sankar Das Sarma, Xiao Li
We investigate the interplay of disorder and interaction in two-dimensional electron systems in a strong magnetic field, focusing on the transition between Wigner crystals and frac…
A Structure-Preserving GSAV Exponential Integrator for Smectic-A Liquid Crystals
Wenshuai Hu, Guanghua Ji, Xiao Li
The modified Landau--de Gennes (mLdG) theory provides a powerful continuum framework for modeling smectic-A (SmA) liquid crystals by coupling the tensorial orientational order para…
Impurity-induced thermal crossover in fractional Chern insulators
Ke Huang, Sankar Das Sarma, Xiao Li
The recent experimental observation of fractional quantum anomalous Hall (FQAH) states in rhombohedral multilayer graphene has attracted significant attention. One of the most intr…
Thermal ionization of impurity-bound quasiholes in the fractional quantum Hall effect
Ke Huang, Sankar Das Sarma, Xiao Li
We study the interplay between a Coulomb impurity and quasiholes in a fractional quantum Hall (FQH) state at finite temperatures. While a repulsive impurity can pin a quasihole and…