Colloquium: Graphene spectroscopy
  Spectroscopic studies of electronic phenomena in graphene are reviewed. A variety of methods and techniques are surveyed, from quasiparticle spectroscopies (tunneling, photoemission) to methods probing density and current response (infrared optics, Raman) to scanning probe nanoscopy and ultrafast pump-probe experiments. Vast complimentary information derived from these investigations is shown to highlight unusual properties of Dirac quasiparticles and many-body interaction effects in the physics of graphene. 
D. N. Basov, M. M. Fogler, A. Lanzara, Feng Wang, Yuanbo Zhang
cond-mat.mes-hall