2007/11/30 by Masaaki Nakamura, Lila Hirasawa · 1 citation
Materials Science · Physics and Astronomy · #Graphene research and applications #Quantum and electron transport phenomena #Surface and Thin Film Phenomena #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.77.045429
published as Phys. Rev. B, 77 (2008) 045429 · 11 pages, 11 figures
openalex publication_date 2008/01/29 · arxiv created 2008/01/31 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We discuss electric transport and orbital magnetism of multilayer graphenes in a weak-magnetic field using the matrix decomposition technique. At zero temperature, the minimum conductivity is given by that of the monolayer system multiplied by the layer number N, independent of the interlayer hopping t. When the interlayer hopping satisfies the condition t⪢\ensuremathℏ∕\ensuremathτ with \ensuremathτ being collision time of impurity scattering, [N∕2] kinks and [N∕2]+1 plateaux appear in the Fermi-energy (gate voltage) dependence of the conductivity and the Hall conductivity, respectively. These behaviors are interpreted as multiband effects. We also found that the Hall conductivity and the magnetic susceptibility take minimum value as a function of temperature, for certain value of the gate voltage. This behavior is explained by Fermi-energy dependence of these functions at zero temperature.