2003 Volume 1 Pages 120-123
The resistance of Na atomic chains between two metallic electrodes is studied using an ab initio method within the density functional theory and including the effects of structural relaxation. We have found that the oscillatory behavior of the resistance of Na atomic chains with respect to the number of Na atoms, predicted previously by other groups, becomes much reduced after structural relaxation: Resistances of all the 2-, 3- and 4-atom Na chains become close to the inverse of the conductance unit (12.9 kΩ). Our results suggest that the even-odd parity of conductance may be much weaker than as was expected. [DOI: 10.1380/ejssnt.2003.120]
