Wavelength-Selective control of Atomic Scale Au Contacts

We demonstrate wavelength-selective control of atomic motion in a mechanically controllable Au break junction.

We demonstrate wavelength-selective control of atomic motion in a mechanically controllable Au break junction. Excitation at $λ_{\mathrm{form}}\simeq 530~{\rm nm}$ drives gap closure and metallic bridge formation, whereas excitation at $λ_{\mathrm{rup}}\simeq 407~{\rm nm}$…