Measurements on the Surface Tension of 3He Crystals near 100 mK
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3He crystals start to show facets on their surface only at about 100 mK, well below the roughening transition temperature, and the reason for this change of the surface state is not clear yet. However, the most important characteristics of the crystal surface, the surface tension, was not measured in this temperature range before. We report our observations on the equilibrium shape of the 3He crystals in the temperature range of 77...100 mK. The surfaces tension was found to be isotropic and temperature—independent, and the corresponding value of the capillary length, λ = 0.93 ± 0.10 mm, is in a good agreement with the value measured at higher temperatures by Rolley et al.2
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- Measurements on the Surface Tension of 3He Crystals near 100 mK
Journal of Low Temperature Physics
Volume 138, Issue 3-4 , pp 811-816
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- Kluwer Academic Publishers-Plenum Publishers
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- 1. Low Temperature Laboratory, Helsinki University of Technology, P.O. Box 2200, FIN-02015, HUT, Finland
- 2. P.L. Kapitza Institute, Kosygina 2, 119334, Moscow, Russia
- 3. Department of Physics, Stanford University, 94305-4060, Standford, CA, USA