Field enhancement in subnanometer metallic gaps
Field enhancement in subnanometer metallic gaps
Motivated by recent experiments [D. R. Ward et al., Nat. Nanotechnol. 5, 732 (2010)], we present here a theoretical analysis of the optical response of sharp gold electrodes separated by a subnanometer gap. In particular, we have used classical finite difference time domain simulations to investigate the electric-field distribution in …