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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 ...
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Superinsulator infinite voltage
Everybody knows about superconductivity, at cryogenic temperatures conductor resistance drops to zero for direct current. There is lesser known related phenomena called superinsulator where material ...
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