On the Possibility of “Dry” Friction in Superfluid He4
DOI:
https://doi.org/10.15407/ujpe56.2.144Keywords:
-Abstract
A possible microscopic explanation for the exhaustion of ρsin helium-II at the wall at T > Tc ~ 0.5÷1 K has been proposed, and a possibility for the "dry" friction to exist in He-II at T ≤ Tc has been predicted. Both effects are related to the fact that the energy of 2D-rotons is lower by 2~K than that of 3D-rotons, so that the wall is a potential well for the latter.
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