Comment on ``Jellium model of metallic nanocohesion''

Abstract

In a recent letter Stafford, Baeriswyl and Burki have provided a simple model for the elastic force in metallic constrictions of nanometer size. By employing a semiclassical Weyl expansion for the density of states of transverse modes, we show that for any smooth cross section, there is a universal contribution (4 epsilon_F)/(9 lambda_F) to the average force which is absent in the presence of a hole.

Comment on the paper by C. A. Stafford et al. in Phys. Rev. Lett. 79, 2863 (1997) [cond-mat/9709031], 1 page, RevTeX, published version with minor changes