What are the different types of superconductors and how do they work?

  • Context: Graduate 
  • Thread starter Thread starter ARou
  • Start date Start date
  • Tags Tags
    Superconductors
Click For Summary

Discussion Overview

The discussion centers on the types of superconductors, specifically conventional and non-conventional superconductors, and the underlying mechanisms that govern their behavior. Participants explore theoretical frameworks, including BCS theory and Ginzburg–Landau theory, while addressing the challenges in understanding high-temperature superconductors.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants propose that there are two main types of superconductors: conventional and non-conventional, with conventional superconductors explained by BCS theory.
  • Others argue that the mechanisms behind non-conventional superconductors remain largely unknown, with several competing models but no consensus on a comprehensive explanation.
  • A participant mentions that Ginzburg–Landau theory has some predictive power regarding type I and type II superconductors, but questions its overall applicability to high-temperature superconductors.
  • Another participant notes that while there are various models that address certain features of superconductors, none provide a complete understanding or accurate predictions for the critical temperature (Tc) of high-temperature superconductors.

Areas of Agreement / Disagreement

Participants generally agree that there are different types of superconductors and that conventional superconductors are explained by BCS theory. However, there is significant disagreement and uncertainty regarding the mechanisms of non-conventional superconductors and the effectiveness of existing theories, particularly in relation to high-temperature superconductors.

Contextual Notes

Limitations include the lack of a unified theory that can explain all types of superconductors, particularly high-temperature superconductors, and the dependence on specific theoretical frameworks that may not encompass all observed phenomena.

ARou
Messages
1
Reaction score
0
As I understand it there are two types of superconductors, conventional and non-conventional. Conventional superconductors are explained by the BCS theory, my understanding of which being electrons pair up because the bending fields from their movement hold them together and there is not enough other movement to break these forces, but non-conventional ones are not. How do the non-conventional superconductors work then?
 
Last edited:
Physics news on Phys.org


Short version, nobody knows. There are several models. None of them explain high temperature type II superconductors.
 


I thought Ginzburg–Landau theory somewhat predicted observed features of type I and type II?
 


I think that the OP is asking about conventional versus e.g. high-temperature oxide superconductors.
 


Feldoh said:
I thought Ginzburg–Landau theory somewhat predicted observed features of type I and type II?
There are several models that explain this and that. There just isn't one that explains everything, even qualitatively, and gives a prediction for Tc that's anywhere close to the Tc of high-temperature superconductors, which really means that we don't understand what's going on with these.
 

Similar threads

  • · Replies 5 ·
Replies
5
Views
7K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 1 ·
Replies
1
Views
5K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 6 ·
Replies
6
Views
4K
  • · Replies 8 ·
Replies
8
Views
3K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 9 ·
Replies
9
Views
4K
  • · Replies 3 ·
Replies
3
Views
2K