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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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Prof. Dr. Gianaurelio Cuniberti
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Institute for Materials Science
TU Dresden
01062 Dresden, Germany
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