I don't understand how super conductivity works. So resistance decreases with temperature in metals because there's a decrease in the random movement within the metal right? So how do some materials just suddenly have a resistance of 0 below the critical temperature? Is it something to do with cooper pairs? I know of the but idk what they are at all.

What do I need to read/watch to find the answer to this. I'm attempting to make notes on it right now. I've got some basic notes on the 3/4 laws of thermodynamics because I thought that was related.

I'll post my notes so far and I apologize in advance for the quality.