Hello Adam,

Have a look here: http://journals.aps.org.virtual.anu.edu.au/prb/pdf/10.1103/PhysRevB.66.115406

This paper has few-nm gold films. I am not sure if that's the wavelength range you are after, but you can also try checking the references and citations to this paper.

Best,

Alex

Hi Alex,

Thanks for the reply, but as I said, my layer is far thicker than the percolation regime, which they investigate in this paper.

Adam

Hi Adam,

I am afraid that I do not have time to read your references, but I wonder whether the mean free path of electron (~140 nm) is comparable with the sample thickness (~80 nm) and the wavelength / skin-depth inside Au (~300 nm or less).

If so, the electrodynamics cannot be described well by the local response.

This phenomenon is known as anomalous skin-effect   in microwave and terahertz region and firstly studied by Pippard.

We measured the surface impedance of Nb and Pb in microwave region at low temperatures, and  observed similar behaviors.

Physica C: Superconductivity, Volumes 426–431, Part 1, 1 October 2005, Pages 240-245

Best regards,

Ryotaro Inoue