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

» presentations   » 2006.03.27-31




Scaling law for the conductance of gold nanotubes (TT 9.8 Mon 15:45 HSZ 304)

M. del Valle, C. Tejedor, and G. Cuniberti

Deutsche Physikalische Gesellschaft, AKF Frühjahrstagung 2006
German Physical Society, Spring Meeting 2006


2006.03.27-31; Dresden, Germany

A new form of gold nanobridges has been recently observed in ultrahigh-vacuum experiments, where the gold atoms rearrange to build helical nanotubes, akin in some respects to carbon nanotubes. The good reproducibility of these wires and their unexpected stability will allow for conductance measurements and make them promising candidates for future applications . We present here a study of the transport properties of these nanotubes in order to understand the role of chirality and of the different orbitals in conductance. The conductance per atomic row shows a light decreasing trend as the diameter grows, which can be also seen through an analytical formula based on a one-orbital model.



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