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TU Dresden » Faculty of Mechanical Science and Engineering » Institute for Materials Science » Chair of Materials Science and Nanotechnology

» presentations   » 2008.02.26




Scrutinizing the conductance and noise of ac driven carbon-based nanostructures (TT 21.10)

L. Foa-Torres, and G. Cuniberti

Deutsche Physikalische Gesellschaft, AKF Frühjahrstagung 2008
German Physical Society, Spring Meeting 2008


2008.02.26; (EB 202) Berlin, Germany

Time-dependent excitations provide an opportunity to achieve control through selective excitations, opening an avenue for both fundamental research and practical applications. Due to their outstanding electrical properties, carbon-based nanostructures offer an ideal playground to study such phenomena in low dimensions. Here we focus on the effects of ac driving on the conductance and the shot noise of single walled carbon nanotubes and graphene nanoribbons. Our calculations, which are based on Floquet theory and take into account the full electron dynamics, are aimed to bridge the gap between theory and recent experiments carried out in the Fabry-Perot regime. Numerical results are complemented by analytical calculations based on a simplified model. The effects of decoherence are further explored by using a phenomenological model.



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