The problem of electron-electron interactions in graphene is reviewed. Starting from the
screening of long-range interactions in these systems, the existence of an emerging Dirac …

Near the magic angle, strong correlations drive many intriguing phases in twisted bilayer
graphene (tBG) including unconventional superconductivity and chern insulation. Whether …

The one-loop polarization function of graphene has been calculated at zero temperature for
arbitrary wavevector, frequency, chemical potential (do**), and band gap. The result is …

Topological phase transitions in condensed matter systems accompany emerging
singularities of the electronic wavefunction, often manifested by gap-closing points in …

Graphene can be rendered semiconducting via energy gaps introduced in a variety of ways,
eg, coupling to substrates, electrical biasing, or nanostructuring. To describe and compare …

The electronic properties of the two-dimensional material silicene are strongly influenced by
the application of a perpendicular electric field E z and of an exchange field M due to …

In this paper we investigate the relativistic quantum dynamics of a massive excitation in a
graphene layer with a wedge disclination in the presence of a uniform magnetic field. We …

We present a formulation for the nonlinear optical response in gapped graphene, where the
low-energy single-particle spectrum is modeled by massive Dirac theory. As a …

There is an interesting proposal that the long-range Coulomb interaction in suspended
graphene can generate a dynamical gap, which leads to a semimetal–insulator phase …

We propose a microscopic theory of the optical second-harmonic generation (SHG) from π
electrons in two-dimensional (2D) honeycomb lattice structures with broken space inversion …