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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 |
Files in This Item:
File | Description | Size | Format | |
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General Scattering Mechanism and Transport in Graphene.pdf | Article | 194.99 kB | Adobe PDF | View/Open |
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