Figure 4
From: Electron tunneling between vibrating atoms in a copper nano-filament
Model geometry for Cu conductive filaments (and also nanocontacts) formed at various Icc levels. (a) Filament formed at low Icc resulting in a single atom contact. (b) Filament formed at moderate Icc resulting in few atom contact. (c) Filament at a high Icc resulting in a cylindrically-shaped filament with mesoscopic contacts with both electrodes.
