Dielectric constant of a conductor

[phymatter]

i am reposting this question , earlier it had been deleted assuming it to be a "HOMEWORK QUESTION" ,
well my question is ,
can we define a dielectric constant for a conductor ?? is it conceptually meaningful?? if yes then why and what is it?

 

[Meir Achuz]

Yes. You can look up the value of the dielectric constant for conductors in reference books. It is discussed in EM texts.

 

[Bob S]

In this URL, Maxwell's equations are derived for lossy media with both conductance and dielectric constant
http://pcawte.me.uk/documents/phd-bitmap/phdap1.html
In particular, look at Eq. (A18)- (A20).
The complex propagator, which includes both a dielectric constant and conductance, is presented.

In the following URL, look about 1/4 the way through the paper to find table of dielectric constant and loss tangents (meaning ac lossy or ac conductance) of solids.
http://www.kayelaby.npl.co.uk/general_physics/2_6/2_6_5.html
This table includes plastics, wood, rubbers, minerals, etc.

This table below has a search function that allows combined conductivity and dielectric constant searches. I immediately found silicon and germanium (semi) conductors.
http://www.matweb.com/search/PropertySearch.aspx.
Bob S