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1 vote
2 answers
60 views

What is the lower limit for experimentally measuring $T_c$ of superconductors?

I'm pretty new to this topic, but find it interesting, so please bear with me. Since superconductors with $T_c \approx 4.2\text{K}$ have been measured, I wonder, is it possible to have superconductors ...
vanilla1's user avatar
-5 votes
1 answer
136 views

Is superconductance restricted to an extremely low temperature? Or can it be effectively replicated using some other technique? [closed]

A type of electrical amplifier is proposed in which only magnetism and it’s analogous current exists for the most part. There is no voltage and no wattage (to speak of) in which electricity has to ...
Vinyasi's user avatar
1 vote
1 answer
72 views

Is there any positive temperature from which superconductivity ceases?

From what I understand about superconductivity, it is due to a coupling between Cooper pairs and phonons. At the absolute 0, there is no phonon, so I assume superconductivity cannot exist at that ...
untreated_paramediensis_karnik's user avatar
27 votes
4 answers
8k views

Are room temperature superconductors theoretically possible, and through what mechanism?

At the moment, the highest critical temperature superconductor known to science (or myself, at least) is mercury barium calcium copper oxide. With a $T_{c}$ of roughly 133 K, that's well above the ...
TheEnvironmentalist's user avatar