Intrinsic optical properties and enhanced plasmonic response of epitaxial silver.
basic_science · Level V
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- Record sourced from PubMed, PMID 24923858.
- Also identified by DOI 10.1002/adma.201401474.
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Abstract
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.