Why is silver the best conductor?

In summary, the free electron density in increasing order is Ag, Cu, and Al. However, the conductivity is in the reverse order due to factors such as electron-electron scattering and other forms of scattering. The resistivity is not solely dependent on charge carrier density, but also on factors like phonons, impurities, and defects. Furthermore, the electron-electron scattering is only significant at extremely low temperatures near 0 K. This information can be found in the Solid State physics forum.
  • #1
iScience
466
5
More specifically, the free electron density in increasing order goes like this:

Ag
Cu
Al

why then is the conductivity in the reverse order? ie the free electron density doesn't seem to play much of a role in conductivity beyond a certain point.
 
Physics news on Phys.org
  • #2
Probably due to electron-electron scattering, if there are too many free electrons then they will collide with each other and limit the conductivity.
 
  • #3
iScience said:
More specifically, the free electron density in increasing order goes like this:

Ag
Cu
Al

why then is the conductivity in the reverse order? ie the free electron density doesn't seem to play much of a role in conductivity beyond a certain point.

Really? Where did you get the info that the conductivity is in "the reverse order"?

http://chemistry.about.com/od/molec...f-Electrical-Resistivity-And-Conductivity.htm

Secondly, the conductivity isn't just a function of charge carrier density. The resistivity is a function scattering of charge carrier with phonons, impurities, defects, etc. BTW, electron-electron scattering, per Landau Fermi Liquid description, plays a minor role in the conductivity at ordinary temperatures. It is only apparent at extremely low temperature near 0 K.

This probably should have been posted in the Solid State physics forum.

Zz.
 

What is the reason for silver being the best conductor?

The reason for silver being the best conductor is due to its high electrical conductivity. This means that it allows electricity to flow through it easily, making it an excellent choice for conducting electricity.

What makes silver a better conductor than other metals?

Silver has the highest electrical conductivity of all metals, meaning that it has the lowest resistance to the flow of electricity. This is due to its atomic structure, which allows for the easy movement of electrons, resulting in efficient conduction of electricity.

Are there any other factors that contribute to silver's conductivity?

Yes, apart from its atomic structure, silver also has a high thermal conductivity, meaning that it can efficiently transfer heat. This is due to its closely packed atoms, which allow for the easy transfer of energy. Additionally, silver is also a good reflector of light, making it useful in optical applications.

Is silver the best conductor at all temperatures?

No, silver's conductivity decreases with increasing temperature, like most metals. However, even at high temperatures, silver still remains one of the best conductors compared to other metals.

Are there any downsides to using silver as a conductor?

One downside to using silver as a conductor is its high cost. Silver is a precious metal and is more expensive than other conductive materials, making it less practical for widespread use. Additionally, silver is also prone to tarnishing, which can affect its conductivity. Therefore, it is often coated with a protective layer to prevent tarnishing.

Similar threads

Replies
14
Views
1K
Replies
7
Views
984
  • Other Physics Topics
Replies
11
Views
29K
  • Electrical Engineering
Replies
12
Views
1K
  • Electrical Engineering
Replies
3
Views
467
Replies
4
Views
802
  • Electrical Engineering
Replies
4
Views
3K
Replies
8
Views
1K
  • Other Physics Topics
Replies
1
Views
1K
  • Introductory Physics Homework Help
Replies
1
Views
1K
Back
Top