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 …

The basic aspects of electrons in graphene (two-dimensional graphite) exposed to a strong
perpendicular magnetic field are reviewed. One of its most salient features is the relativistic …

The fractional quantum Hall effect,,,(FQHE) in an electron gas with multiple internal degrees
of freedom provides a model system to study the interplay between symmetry breaking and …

The ν= 0 quantum Hall state in a defect-free graphene sample is studied within the
framework of quantum Hall ferromagnetism. We perform a systematic analysis of the …

We present a theory of the magneto-optical Faraday and Kerr effects of topological insulator
(TI) films. For film thicknesses short compared to wavelength, we find that the low-frequency …

Graphene provides a rich platform to study many-body effects, owing to its massless chiral
charge carriers and the fourfold degeneracy arising from their spin and valley degrees of …

Graphene exhibits many unique electronic properties owing to its linear dispersive
electronic band structure around the Dirac point, making it one of the most studied materials …

We investigate low-temperature magneto-transport in recently developed, high-quality
multiterminal suspended bilayer graphene devices, enabling the independent measurement …

The nature of fractional quantum Hall (FQH) states is determined by the interplay between
the Coulomb interaction and the symmetries of the system. The distinct combination of spin …

Graphene and its multilayers have attracted considerable interest because their fourfold spin
and valley degeneracy enables a rich variety of broken-symmetry states arising from …