First-Principles Study on Electron-Conduction Properties of Helical Gold Nanowires

Details First-Principles Study on Electron-Conduction Properties of Helical Gold Nanowires First-Principles Study on Electron-Conduction Properties of Helical Gold Nanowires

2004-09-28

arxiv.org/abs/cond-mat/0409721v1

Phys. Rev. Lett. 94, 206806 (2005)

Physics

Condensed Matter

Materials Science

4 pages and 2 figures

Scientific paper

10.1103/PhysRevLett.94.206806

Multishell helical gold nanowires (HGNs) suspended between semi-infinite electrodes are found to exhibit peculiar electron-conduction properties by first-principles calculations based on the density functional theory. Our results that the numbers of conduction channels in the HGNs and their conductances are smaller than those expected from a single-atom-row nanowire verify the recent experiment. In addition, we obtained a more striking result that in the cases of thin HGNs, distinct magnetic fields are induced by the electron current helically flowing around the shells. This finding indicates that the HGNs can be good candidates for nanometer-scale solenoids.

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