Thermodynamic theory of thin-filmHe3-He4solutions

Abstract

Expectations are presented with regard to the concentration profile and the extent of superfluidity in thin films of ${}_{}{}^3{}_{}{}^{}\mathrm{He}$-${}_{}{}^4{}_{}{}^{}\mathrm{He}$ in a van der Waals field. A thermodynamic method of analysis is outlined which, although treating a somewhat idealized configuration, is amenable to experimental confirmation. The connection between this analysis and experiment is discussed in detail.