High-bias conductance of atom-sized Al contacts

Theoretical study of the conductance of ferromagnetic atomic-sized contacts

M. Häfner,1,2 J. K. Viljas,1,3 D. Frustaglia,4 F. Pauly,1,3 M. Dreher,5 P. Nielaba,5 and J. C. Cuevas2,1,3 1Institut für Theoretische Festkörperphysik, Universität Karlsruhe, D-76128 Karlsruhe, Germany 2Departamento de Física Teórica de la Materia Condensada, Universidad Autónoma de Madrid, E-28049 Madrid, Spain 3Institut für Nanotechnologie, Forschungszentrum Karlsruhe, D-76021 Karlsruhe, Germ...

Structure and conductance histogram of atomic-sized Au contacts

Many experiments have shown that the conductance histograms of metallic atomic-sized contacts exhibit a peak structure, which is characteristic of the corresponding material. The origin of these peaks still remains as an open problem. In order to shed some light on this issue, we present a theoretical analysis of the conductance histograms of Au atomic contacts. We have combined classical molec...

Comment on "Quantized conductance in an atom-sized point contact"

Quantized conductance in atom-sized wires between two metals.

Four-atom period in the conductance of monatomic Al wires.

We present first-principles calculations based on density functional theory for the conductance of monatomic Al wires between Al(111) electrodes. In contrast to the even-odd oscillations observed in other metallic wires, the conductance of the Al wires is found to oscillate with a period of four atoms as the length of the wire is varied. Although local charge neutrality can account for the obse...