• Echarri, A. Rodriguez
• Tagliabue, G.
• Abajo, F. Javier Garcia De
• Tsoulos, T. V.
• Cox, Joel D.
• Bowman, A. R.
• Kiani, F.

Abstract

<p>Photon emission from gold has recently received increased attention, particularly in the context of nanoplasmonics. However, this signal9s origin remains unclear. Here we study photoluminescence from ultrathin monocrystalline gold flakes, allowing us to decouple nanoscale from plasmonic effects. We explain our measurements through first-principles theory accounting for electronic and optical properties of the gold films. Our results resolve a fundamental scientific debate and provide insight for the exploitation of photoluminescence as a probe of light-matter interactions in metals.</p>

Topics

• photoluminescence
• theory
• gold