Dresden 2006 – scientific programme
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TT: Tiefe Temperaturen
TT 9: Transport: Nanoelectronics III - Molecular Electronics
TT 9.8: Talk
Monday, March 27, 2006, 15:45–16:00, HSZ 304
Scaling law for the conductance of gold nanotubes — •Miriam del Valle1,2, Carlos Tejedor1, and Gianaurelio Cuniberti2 — 1Dpto. Física de la Materia Condensada, Universidad Autónoma de Madrid, Spain — 2Institute of Theoretical Physics, Universität Regensburg, 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.