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Charge transport through pure carbon devices and DNA wires (invited Hauptvortrag)
G. Cuniberti
Deutsche Physikalische Gesellschaft, AKF Frühjahrstagung 2002 German Physical Society, Spring Meeting 2002 (Symposium Quantum Transport at Molecular Scale)
2002.03.11-15; Regensburg, Germany
| Recent transport measurements through single molecules
are calling upon a detailed theoretical comprehension
of quantum transport on the molecular scale. This talk
is focused on both general methods and concrete
structures. The calculus of linear and nonlinear
transport in a molecular device is first addressed by
introducing the theoretical tools of coherent
transport, density functional and molecular dynamics.
The implementation of these instruments to realistic
structures allows to draw rather general conclusions on
the mechanisms of charge transport in experimental
devices. In particular, the analysis of a carbon
nanotube ring and a short (polyG-polyC) DNA wire
provides physical understanding which is supported by
the fairly good agreement with the experimental data.
The importance of relying on ab-initio parameter free
estimations for catching the finer structure of
measurements in most experimental conditions is finally
highlighted.
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Prof. Dr. Gianaurelio Cuniberti
secretariat:
postal address:
Institute for Materials Science
TU Dresden
01062 Dresden, Germany
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