2006/06/30 by L. A. Falkovsky, A. A. Varlamov · 1 citation
Physics and Astronomy · #cond-mat.mes-hall
paper · pdf · doi:10.1140/epjb/e2007-00142-3
4 pages, 1 figure, to be submitted
arxiv created 2006/06/30 · arxiv updated 2009/12/01
We present an analytic calculation of the conductivity of pure graphene as a function of frequency ω, wave-vector k, and temperature for the range where the energies related to all these parameters are small in comparison with the band parameter γ=3 eV. The simple asymptotic expressions are given in various limiting cases. For instance, the conductivity for kv0≪ T≪ ω is equal to σ(ω, k)=e2/4ℏ and independent of the band structure parameters γ and v0. Our results are also used to explain the known dependence of the graphite conductivity on temperature and pressure.