Quantum Plasmonics: Nonlinear Effects in the Field Enhancement of a Plasmonic Nanoparticle Dimer Marinica, D. C. ; Kazansky, A. K. ; Nordlander, P. ; Aizpurua, J. ; Borisov, A. G. Abstract Publication: Nano Letters Pub Date: March 2012 DOI: 10.1021/nl300269c Bibcode: 2012NanoL..12.1333M