Electronic-structural dynamics in graphene

Electronic-structural dynamics in graphene

We review our recent time- and angle-resolved photoemission spectroscopy experiments, which measure the transient electronic structure of optically driven graphene. For pump photon energies in the near infrared ([Formula: see text]), we have discovered the formation of a population-inverted state near the Dirac point, which may be of interest for the design of THz lasing devices and optical amp...

Structural and Electronic Properties of Functionalized Graphene

In the present paper, we study the effects of functionalization of graphene with simple organic molecules OH, and NH2, focusing on the stability and band gaps of the structures. We have performed DFT calculations for graphene supercells with various numbers of the attached molecules. We have determined adsorption energies of the functionalized graphene monoand bilayers, the changes in the geome...

Ultrafast Electronic and Structural Phenomena in Graphite and Graphene

Electronic Transport in Graphene

Electronic Transport in Graphene

Electronic multicriticality in bilayer graphene

We map out the possible ordered states in bilayer graphene at the neutrality point by extending the previous renormalization group treatment of many-body instabilities to finite temperature, trigonal warping and externally applied perpendicular electric field.We were able to analytically determine all outcomes of the RG flow equations for the nine four-fermion coupling constants.While the full ...