Temperature Dependence of the Surface Tension between Liquid Helium-4 and Cesium

Pricaupenko and Treiner¹predicted a small but non-negligible temperature dependence of the surface tension between liquid helium and cesium. However, when the effects of bulk phonons in both liquid and solid are taken into account, the temperature dependence is found to be significantly weaker. The effect of surface adsorption, surface stress and surface elasticity are also considered, and found to be negligible. Experimental results have so far been contradictory.