My question is if I got a superconductor and cool it to absolute zero at least measurable by today's tool, it should have no electrical resistance but then would there be any current when there is a voltage potential diff?
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$\begingroup$ Are you asking because of ohm's law of I = V/R? $\endgroup$– spcanCommented Dec 11, 2018 at 9:28
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$\begingroup$ @spcan: not exactly, I asked because I thought there should be no movement at absolute zero at least measurable one but then resistance also become zero $\endgroup$– user6760Commented Dec 11, 2018 at 9:36
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$\begingroup$ It's not really absolute zero, just a few Kelvin or fraction of Kelvin over zero so there is some movement. And some materials are superconductors at even higher temperatures. The only property that characterizes a superconductor is its almost zero resistance. $\endgroup$– spcanCommented Dec 11, 2018 at 10:37
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$\begingroup$ @spcan Absolute zero $T$ does not mean no movement. It means no thermal movement. A beam of particles all moving at the same speed has zero temperature. $\endgroup$– ThemisCommented Dec 16, 2018 at 0:21
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