Comparing different parpameters to be a plasmonic material

[Debnath]

Hello Everybody

I want to do the comparison of metals like Silver, Gold, Aluminum, Copper, Sodium and Potassium as plasmonic metals. Now, I am confused about some parameters about what they really mean.

1. what does ε(int) means? Is it better for a plasmonic material to have less ε(int)?

2. What does "Plasma Frequency of a metal in eV" means here?

3. What does ω(int) in eV means? Is it better to have more value of ω(int) in eV to be a better Plasmonic material?

4. What does dumping rate in eV means? How it effect the property of a plasmonic material?

5. What does happen if the light is incident to a plasmonic material below or more than plasmon frequency? Why this plasmon frequency is that so important?

6. In a plasmonic material, the prime target is scattering of light? Why not absorption or transmission? What will be the problem if the light will be either absorbed or transmitted?

I will be very much grateful if someone can give my answers. Also, if anyone can suggest any paper or, textbook where I can get those answers, I will be really so grateful.

Thanks in advance.

 

[DrDu]

Any book on solid state theory should contain a chapter which explains most of the questions you are asking for, especially the meaning of plasma frequency, dielectric constant of a metal and its relation to the frequency of surface plasmons. Try e.g. Ashcroft and Mermin, Solid state physics.

 

[Debnath]

Thank you DrDu

But it would be great if you can tell me now, what is ω (int) in eV means? It might be connected to Interband loss of a metal. If you can let me know about how it is related to Interband loss. And which one is better plasmonic metal actually with having ω (int) 3.2 or 1.2?

Thanking you in advance

 

[DrDu]

I am not a specialist on plasmonics. I may be that ω(int) is the band gap.
Where did you find all these parameters? Are you referring to a specific article?
Would be helpful to have some background information.
I think you can't say absolutely which combination of the parameters makes a better plasmonic material. It rather depends on the frequency range you want your material to operate.