Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/6196
Title: General scattering mechanism and transport in graphene
Authors: Rabiu, M.
Mensah, S. Y.
Abukari, S. S.
Issue Date: 2011
Publisher: University of Cape Coast
Abstract: Using quasi-time dependent semi-classical transport theory in RTA, we obtained coupled current equations in the presence of time varying field and based on general scattering mechanism τ ∝ Eβ .We find that close to the Dirac point, the characteristic exponent β = +2 corresponds to acoustic phonon scattering. β = +1 long-range Coulomb scattering mechanism. β = −1 is short-range delta potential scattering in which the conductivity is constant of temperature. The β = 0 case is ballistic limit. In the low energy dynamics of Dirac electrons in graphene, the effect of the time-dependent electric field is to alter ust the electron charge by e → e(1 + (Ωτ) 2) making electronic conductivity non-linear. The effect of magnetic filed is also considered
Description: 8p:, ill.
URI: http://hdl.handle.net/123456789/6196
ISSN: 23105496
Appears in Collections:Department of Physics

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