Superconductivity and electron pair

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SUMMARY

This discussion focuses on the formation and characteristics of electron pairs in superconductivity, particularly emphasizing Cooper pairing. The user inquires about the conditions under which these pairs form, noting that at temperatures below the critical temperature (T < Tc), valence shells are filled, preventing single electrons from gaining enough energy to transition to the conduction band. The conversation highlights the importance of understanding Cooper pairs and their role in supercurrent conduction, suggesting preliminary readings on the topic.

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  • Understanding of superconductivity principles
  • Knowledge of electron behavior in solid-state physics
  • Familiarity with the Pauli exclusion principle
  • Basic concepts of Cooper pairing
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Students and researchers in physics, particularly those interested in superconductivity, electron behavior, and solid-state physics. This discussion is beneficial for anyone seeking to deepen their understanding of Cooper pairs and their implications in superconductive materials.

kthouz
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Hi all!
I am learning superconductivity for the first time. As i saw, the supercurrent of some material is governed mainly by electron pair!
Now my question raises here, how do those electron pairs form? What are their features compared to single electrons?

Here is what i guess: "at very low temperature (T <Tc), the valence shell is fully filled and no electron can have enough thermal energy to make it excited up to the conduction band. And according to Pauli principle, the number of possible electrons that can live together with opposite spins is limited to 2. Now i guess that the conduction (supercurrent) is driven by these pairs of electrons that are bound together and hence the conduction is within the valence band. what do you think?"
Please, i need your help to understand.
 
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You are essentially asking us to teach you about Cooper Pairing, which isn't going to be easy on a forum like this. I would suggest you do some preliminary reading first, and then come back and see if you have other issues that you don't understand.

Start with this:

http://hyperphysics.phy-astr.gsu.edu/hbase/solids/coop.html

Zz.
 

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