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

» presentations   » 2008.02.27




Shot noise in graphene three terminal ballistic devices (TT 22.58)

M. del Valle ,and G. Cuniberti

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


2008.02.27; (Poster B) Berlin, Germany

Graphene is in the focus of an immense scientific interest due to remarkable quantum properties which may emerge already at room temperature. We present here a study of electronic transport in single-layer graphene ribbons in three-terminal configuration set-ups, where the finite-size effects become of importance. These systems are characterized by much more complex stability diagrams than their nanotube (CNT) counterparts. A symmetry-related suppression of transmission of some states is responsible for the Fabry-Perot interference patterns obtained for CNT devices, whereas these dark states become conducting for graphene. This additional complexity is investigated by analizing shot noise properties.



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