2008/06/24 by L. A. Falkovsky · 10 citations
Materials Science · Physics and Astronomy · #Carbon Nanotubes in Composites #Composite material #Condensed matter physics #Conductivity #Constant (computer programming) #Doping #Electron #Graphene #Graphene research and applications #Materials science #Nanotechnology #Optical conductivity #Optics #Optoelectronics #Physics #Quantum and electron transport phenomena #Quantum mechanics #Range (aeronautics) #Reflectivity #Transmittance #cond-mat.mes-hall
paper · pdf · doi:10.1088/1742-6596/129/1/012004
5 pages,4 figures
arxiv created 2008/06/24 · openalex publication_date 2008/10/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Reflectance and transmittance of graphene in the optical region are analyzed as a function of frequency, temperature, and carrier density. We show that the optical graphene properties are determined by the direct interband electron transitions. The real part of the dynamic conductivity in doped graphene at low temperatures takes the universal constant value, whereas the imaginary part is logarithmically divergent at the threshold of interband transitions. The graphene transmittance in the visible range is independent of frequency and takes the universal value given by the fine structure constant.