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cond-mat.mtrl-sci2012
Appearance of Negative Differential Conductivity in Graphene Nanoribbons at High-Harmonics
M. Rabiu, S. Y. Mensah, S. S. Abukari
We theoretically study current dynamics of graphene nanoribbons subject to bias dc and ac driven fields. We showed that graphene nanoribbons exhibit negative high-harmonic differen…
cond-mat.mtrl-sci2012★ 4 cited
Terahertz Generation and Amplification in Graphene Nanoribbons in Multi-frequency Electric Fields
M. Rabiu, S. Y. Mensah, S. S. Abukari
We study theoretically a multi-frequency response of electrons in confined graphene subject to dc-ac driven fields. We explore the possibility for using graphene nanoribbons (GNRs)…
cond-mat.mtrl-sci2011★ 3 cited
General Scattering Mechanism and Transport in Graphene
M. Rabiu, S. Y. Mensah, S. S. Abukari
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 mecha…