Third sound velocity in thin films of 3He-4He mixtures at low temperature

J.P. Laheurte , J.C. Noiray , J.P. Romagnan

We present third sound velocity measurements in thin films of 3He- 4He mixtures down to 0.1 K. The low temperature behaviour of this velocity suggests the existence of a phase separation perpendicular to the walls even for a film mixture of 3.7 layer thickness.

Mots clés: helium films; liquid helium 3 4 mixtures; liquid helium sound propagation; third sound velocity measurements; low temperature behaviour; phase separation; sup 3 He sup 4 He mixture thin film

Domaines: Articles anciens

J.P. Laheurte, J.C. Noiray, J.P. Romagnan. Third sound velocity in thin films of 3He-4He mixtures at low temperature. Journal de Physique Lettres, 1981, 42 (9), pp.197-200. ⟨10.1051/jphyslet:01981004209019700⟩. ⟨jpa-00231908⟩