160 likes | 409 Views
Graphene as a new page in Solid State Physics. L.A. Falkovsky Landau Institute for Theoretical Physics Institute of High Pressure Physics. Graphene sample in the Hall conductivity experiment. Novoselov et al (2005). Graphite Wallace, PR 71, 622 (1947) McClure, PR 108, 612 (1957)
E N D
Graphene as a new page in Solid State Physics L.A. Falkovsky Landau Institute for Theoretical Physics Institute of High Pressure Physics
Graphene sample in the Hall conductivity experiment Novoselov et al (2005)
Graphite Wallace, PR 71, 622 (1947) McClure, PR 108, 612 (1957) Slonczewski, Weiss, PR 109 (1958) Nanotubes Saito, Fujita, Dresselhaus, Dresselhaus, PRB 46, 1804 (1992)
K’ K graphene doped two-dimensional massless Dirac fermions
Field-effect 3) universal optical conductivity Novoselov et al (2005) • conductivity • proportional to • the carrier density 2) universal minimal conductivity
Time and space dispersion of conductivity Falkovsky and Varlamov (2006)
optical conductivity Falkovsky and Pershoguba (2007) intraband interband Gusynin and Sharapov (2007)
optical transmittance of graphene r x t z Novoselov et al. (2008)
graphene conductance D. Basov et al (2008)
Klein’s paradox y X>0 U=0 X<0 x X<0 U x X>0
Bilayer graphene 2 2 d d g 2U m electron dispersion field effect E=2U/d Novoselov et al Ohta et al Li et al Kuzmenko et al Mak et al bilayer McCann, Fal’ko (2006-2007)
Graphite phonon modes Mounet PRB (2005)