Strongly interacting plasmon nanoparticle pairs: From dipole-dipole interaction to conductively coupled regime

Atay T., Song J., Nurmikko A.

NANO LETTERS, cilt.4, sa.9, ss.1627-1631, 2004 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 4 Sayı: 9
  • Basım Tarihi: 2004
  • Doi Numarası: 10.1021/nl049215n
  • Dergi Adı: NANO LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1627-1631
  • Akdeniz Üniversitesi Adresli: Hayır

Özet

We have investigated the optical response of periodic arrays of metallic (gold) nanoparticles composed of a pair of particles on each lattice site. By varying the interparticle separation within the pairs from dielectric proximity to conductive contact on a nanometer scale, we observe an abrupt, large renormalization as well as a splitting of the surface plasmon polariton energy. These spectral anomalies are ascribed to a transition whereupon the interparticle dipole-dipole interaction is shunted and the plasmon polaritons exhibit multipolar behavior, including a very high local concentration of electromagnetic energy in the vicinity of their conductive contact.