KIAS workshop "From correlated electrons to nanoscale materials"

at Korea Institute for Advanced Study (KIAS), Seoul, Korea

• S.-R. Eric Yang
  
  Korea University
  
  

  Title

  Graphene interband conductivity

  Abstract

  We have investigated the role of electron interactions on the optical conductivity of both undoped and doped graphene using a self-consistent and non-perturbative method. We compare our results for undoped graphene without disorder with the result of a perturbative RG method by Herbut et al [1]. Recent infrared experimental results of Z.Q.Li et al [2] and F. Wang et al [3] of doped graphene are also discussed. [1] I. F. Herbut et al, Phys. Rev. Lett. 100, 046403 (2008). [2] Z. Q. Li et al, Nature Physics, 4, 532 (2008). [3] F. Wang et al, Science, 320, 206 (2008).