Comparison of model calculations (symbols) for the resistance of a one- or two-atom Xe wire between two metallic electrodes with experimental data (solid lines).

Two recent references are:

• N. D. Lang, "Resistance of Atomic Wires," Physical Review B 52, 5335 (1995).
• A. Yazdani, D. M. Eigler and N. D. Lang, "Off-Resonance Conduction Through Atomic Wires," Science 272, 1921 (1996).