Superconductivity in type1 and type2?

In summary, the difference between Type1 and Type2 superconductors lies in the possibility of vortex formation, which depends on the ratio of coherence length to penetration length. Unconventional superconductors tend to exhibit Type2 behavior, but there are also Type2 BCS superconductors.
  • #1
Dampi
11
0
Hi,

My question is about Type1 and Type2 superconductors. Is there a difference between the mechanisms of superconductivity in type1 and type2?

And why type2 display different critical magnetic fields as a function of orientation?

I have no idea about this. It'd be great if anyone could help!
thanx!
 
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  • #2


The "type" does not have any bearing on the underlying mechanism, and only states the possibility of vortex formation. However, this behaviour depends on the ratio of the coherence length (something like the "size" of the electron pair) to the penetration length (the amount of magnetic screening possible). It is the case that unconventional superconductivity as found in the cuprates tend to favour type II behaviour; this is only an empirical observation however --- there are plenty of pure BCS superconductors which are type II also.
 

Related to Superconductivity in type1 and type2?

1. What is the difference between type 1 and type 2 superconductors?

Type 1 superconductors are characterized by a single critical temperature, below which they exhibit zero electrical resistance and perfect diamagnetism. Type 2 superconductors have two critical temperatures - an upper and lower critical temperature - and exhibit a mixed state of superconductivity and normal conductivity at temperatures between the two critical temperatures.

2. How do the critical temperatures of type 1 and type 2 superconductors compare?

The critical temperature of type 1 superconductors is typically much lower than that of type 2 superconductors. Type 1 superconductors have critical temperatures in the range of a few degrees Kelvin, while type 2 superconductors can have critical temperatures up to 100 Kelvin.

3. What causes the differences in critical temperatures between type 1 and type 2 superconductors?

The main factor that affects the critical temperature of a superconductor is the strength of the electron-phonon interaction. Type 1 superconductors have a strong electron-phonon interaction, resulting in a low critical temperature. Type 2 superconductors have a weaker electron-phonon interaction, allowing for a higher critical temperature.

4. Can type 1 and type 2 superconductors be used for different applications?

Yes, due to their different properties, type 1 and type 2 superconductors are suited for different applications. Type 1 superconductors are often used in low temperature applications, such as MRI machines. Type 2 superconductors can operate at higher temperatures and are used in technologies such as maglev trains and particle accelerators.

5. Are there any similarities between type 1 and type 2 superconductors?

Yes, both type 1 and type 2 superconductors share the property of zero electrical resistance below their critical temperatures. They also both have applications in various industries, such as healthcare, transportation, and energy. Additionally, both types of superconductors are being studied for potential use in quantum computing.

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