Flat-band materials such as the kagome metals or moiré superlattices are of intense current
interest. Flat bands can result from the electron motion on numerous (special) lattices and …

Contemporary quantum materials research is guided by themes of topology and electronic
correlations. A confluence of these two themes is engineered in moiré materials, an …

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 …

We study theoretically the magic-angle twisted bilayer graphene with proximity-induced
Ising and Rashba spin-orbit couplings on the top layer. Topological flat bands (with three …

We propose a theory for how the weak phonon-mediated interaction ($ J_ {\rm A}\!=\! 1\!\sim\!
4$ meV) wins over the prohibitive Coulomb repulsion ($ U\!=\! 30\!\sim\! 60$ meV) and leads …

We develop an analytic theory to describe the interaction between electrons and K phonons
and study its influence on superconductivity in the bare bands of twisted bilayer graphene …

Extracting Hamiltonian parameters from available experimental data is a challenge in
quantum materials. In particular, real-space spectroscopy methods such as scanning …

We develop a model to describe the mixed valence regime in magic-angle twisted bilayer
graphene (MATBG) using the recently developed heavy-fermion framework. By employing …

Ever since the initial experimental observation of correlated insulators and superconductivity
in the flat Dirac bands of magic angle twisted bilayer graphene, a search for the microscopic …

In magic angle twisted bilayer graphene, transport, thermodynamic and spectroscopic
experiments pinpoint at a competition between distinct low-energy states with and without …