Why is superconductivity a low temperature phenomena?

Answer 1

You call it a low temperature phenomenon because you need to cool a conductor to a very low temperature for superconductivity to occur.

The electrical resistance of a metallic conductor decreases with decreasing temperature; superconductivity is the phenomenon where the electrical resistance of the conductor drops to zero below its critical temperature.

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Answer 2

Jeremiah Adams

Superconductivity is a low-temperature phenomenon because it relies on the formation of Cooper pairs, which are pairs of electrons that are bound together at low temperatures. At high temperatures, thermal energy disrupts the formation of these pairs, leading to the loss of superconducting properties.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.