Magnetic Coupling Between Liquid ³He and Solid Insulators

Abstract

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Quantum fluids in nanoporous media—Effects of the confinement and fractal geometry

“…The first one represents a Bose-system and shows superfluid transition at 2.17 K while atoms of 3 He are governed by Fermi-statistics and superfluid transition can be observed only at much lower temperatures (about 1 mK) when the pairing of two atoms occurs. But even at liquid helium temperatures (1.5-4.2 K) the effects of quantum statistics for 3 He atoms become pronounceable especially in nanoscale confinement (nanoporous media, thin adsorbed layers on solid substrates) [1][2][3] and in the presence of nanoscale disorder induced for example by silica aerogel strands [4]. In recent years the problem of correct description of quantum fluids in the confined geometry at nanoscale length has emerged [5][6][7][8].…”