Hello Im a physics enthusiast, right now im learning about superfluidity. My question is superfluidity and superconductivity are the same thing or do they work together?
$\begingroup$
$\endgroup$
2
-
$\begingroup$ Superconductivity usually refers to electrical conductivity. Liquid helium cooled sufficient to be a superfluid happens to be a great thermal conductor. Is that where the sticking-point is? $\endgroup$– Jiminy Cricket.Commented Aug 11, 2022 at 21:16
-
$\begingroup$ Awesome thanks. Yes this is exactly where i'm stuck at. So basically Liquid Helium can act as a super conducter at certain temperatures? $\endgroup$– Felton MaiseCommented Aug 12, 2022 at 3:12
Add a comment
|
2 Answers
$\begingroup$
$\endgroup$
No, generally speaking superconductivity and superfluidity are two distinct phenomena. However, there are massive similarities between the two. E.g., in a superfluid, the fluid flows with no viscosity (no energy dissipation), whilst in a superconductor the electrons move with no resistivity (no degradation in their velocity).
These similarities lead us to treat the two systems almost like the same thing. In fact, for a while people used to call superconductivity "charged superfluidity"! But don't forget that even though there are some connections, these are typically two different phenomena.
answered Aug 15, 2022 at 9:30
$\begingroup$
$\endgroup$
1
The superconductivity (SC) and superfluidity (SF) both have one universal origin — the Bose-Einstein-Condensation (BEC) of bosons, because BEC-bosons have a minimum and quantized kinetic energy and, thus, cannot transfer their energy to other particles by arbitrarily small portions. In case of SC a boson is an electron pair, in case of SF a boson is a neutral atom (usually — helium atom). The BEC temperature inversely depends on boson mass ($1/m$), so the critical temperature (Tc) of SC may be much higher than Tc of SF.
answered Aug 16, 2022 at 6:34
-
$\begingroup$ Welcome! We noticed that you believe this answer is also appropriate for another question. When that happens, please flag one of the questions as a duplicate, rather than posting the identical answers in more than one place. $\endgroup$– rob ♦Commented Aug 16, 2022 at 14:05