Details

Autor(en) / Beteiligte

• Zhang, Pu
• Feist, Johannes
• Rubio, Angel
• García-González, Pablo
• García-Vidal, F. J.

Titel

Ab initio nanoplasmonics: The impact of atomic structure

Ist Teil von

• Physical review. B, Condensed matter and materials physics, 2014-10, Vol.90 (16), Article 161407

Erscheinungsjahr

2014

Quelle

PROLA - Physical Review

Beschreibungen/Notizen

• We present an ab initio study of the hybridization of localized surface plasmons in a metal nanoparticle dimer. The atomic structure, which is often neglected in theoretical studies of quantum nanoplasmonics, has a strong impact on the optical absorption properties when subnanometric gaps between the nanoparticles are considered. We demonstrate that this influences the hybridization of optical resonances of the dimer, and leads to significantly smaller electric field enhancements as compared to the standard jellium model. In addition, we show that the corrugation of the metal surface at a microscopic scale becomes as important as other well-known quantum corrections to the plasmonic response, implying that the atomic structure has to be taken into account to obtain quantitative predictions for realistic nanoplasmonic devices.