Équipe de Recherche en Physique de l'Information Quantique


Abstract = {Superfluid3He film flow over the rim of a copper beaker has been measured. The flow rate was measured as a function of temperature and as a function of depth of3He below the rim or film thickness at the rim. The critical current, calculated from the flow rate, varied as (1 -T/Tc p)3/2 as expected for pair-breaking;Tc p is a film-thickness-dependent critical temperature. However, the magnitude of the current was an order of magnitude smaller than expected for pair-breaking, in agreement with other experiments that have demonstrated a lower dissipation mechanism in superfluid3He. The suppression of the critical temperature Tc p/Tc b, where Tc b=0.93 mK is the bulk3He transition temperature, varied from 0.93 to 0.7 as the film thickness at the rim varied from 120 to 90 nm. These ratios are larger than expected from Ginzburg-Landau or microscopic theory of superfluid3He-B. {\copyright} 1988 Plenum Publishing Corporation.},
Author = {Daunt, J.G. and Harris-Lowe, R.F. and Harrison, J.P. and Sachrajda, A. and Steel, S. and Turkington, R.R. and Zawadski, P.},
Document_Type = {Article},
Journal = {Journal of Low Temperature Physics},
Number = {5-6},
Pages = {547-568},
Source = {Scopus},
Title = {Critical temperature and critical current of thin-film superfluid3He},
Url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0005243394&partnerID=40&md5=bf396a98e09266c57485adec696bb86a},
Volume = {70},
Year = {1988},
Bdsk-Url-1 = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0005243394&partnerID=40&md5=bf396a98e09266c57485adec696bb86a}}