When two sheets of graphene are stacked at a small twist angle, the resulting flat
superlattice minibands are expected to strongly enhance electron-electron interactions …

When the magnetic order is introduced into topological insulators (TIs), the time-reversal
symmetry (TRS) is broken, and the non-trivial topological surface is driven into a new …

The interplay between topology and correlations can generate a variety of quantum phases,
many of which remain to be explored. Recent advances have identified monolayer WTe2 as …

After decades of searching for the dissipationless transport in the absence of any external
magnetic field, quantum anomalous Hall effect (QAHE) was recently achieved in magnetic …

Experimental results on metal–insulator transitions and the anomalous properties of strongly
interacting two-dimensional electron systems are reviewed and critically analyzed. Special …

In recent attempts to observe axion electrodynamics, much effort has focused on trilayer
heterostructures of magnetic topological insulators, and in particular on the examination of a …

The intrinsic antiferromagnetic topological insulator MnBi2Te4 provides an ideal platform for
exploring exotic topological quantum phenomena. Recently, the Chern insulator and axion …

We report on the scaling behavior of V-doped (Bi, Sb) 2 Te 3 samples in the quantum
anomalous Hall regime for samples of various thickness. While previous quantum …

At high magnetic fields, where the Fermi level lies in the N= 0 lowest Landau level (LL), a
clean two-dimensional electron system (2DES) shows numerous incompressible liquid …

We discuss the effect of dissipation on quantum phase transitions. In particular, we
concentrate on the superconductor to insulator and quantum Hall to insulator transitions. By …