Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
1998-01-12
Phys. Rev. Lett. 80, 1792 (1998)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Comment on the paper by C. A. Stafford et al. in Phys. Rev. Lett. 79, 2863 (1997) [cond-mat/9709031], 1 page, RevTeX, publishe
Scientific paper
10.1103/PhysRevLett.80.1792
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.
Hoeppler C.
Zwerger Wilhelm
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