Intrinsic optical properties and enhanced plasmonic response of epitaxial silver

Yanwen Wu, Chengdong Zhang, N. Mohammadi Estakhri, Yang Zhao, Jisun Kim, Matt Zhang, Xing Xiang Liu, Greg K. Pribil, Andrea Alù, Chih Kang Shih, Xiaoqin Li

Research output: Contribution to journalArticlepeer-review


Using atomically smooth epitaxial silver films, new optical permittivity highlighting significant loss reduction in the visible frequency range is extracted. Largely enhanced propagation distances of surface plasmon polaritons are measured, confirming the low intrinsic loss in silver. The new permittivity is free of extrinsic spectral features associated with grain boundaries and localized plasmons inevitably present in thermally deposited films.

Original languageEnglish (US)
Pages (from-to)6106-6110
Number of pages5
JournalAdvanced Materials
Issue number35
StatePublished - Sep 17 2014
Externally publishedYes


  • ellipsometry
  • epitaxial growth
  • optical constants
  • plasmon

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering


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