12,000

We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK

93%

93% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > Measurements on the surface tension of He-3 cry...
View graph of relations

« Back

Measurements on the surface tension of He-3 crystals near 100 mK.

Research output: Contribution to journalJournal article

Published

  • Igor A. Todoshchenko
  • Harry Alles
  • Heikki J. Junes
  • Alexander Y. Parshin
  • Viktor Tsepelin
Journal publication date02/2005
JournalJournal of Low Temperature Physics
Journal number3-4
Volume138
Number of pages6
Pages811-816
Original languageEnglish

Abstract

He-3 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 characteristic 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 He-3 crystals in the temperature range of 77...110 mK. The surface tension was found to be isotropic and temperature-independent, and the corresponding value of the capillary length, lambda = 0.93 +/- 0.10 mm, is in a good agreement with the value measured at higher temperatures by Rolley et al.