Lev Levitin, D. E. Zmeev, V. V. Dmitriev, J. V. Porto, A. D. Fefferman and J. M. Parpia (2008) Scaling Results for Superfluid 3He in 98% Open Aerogel . Journal of Low Temperature Physics, 150 (3-4). pp. 482-486. ISSN 0022-2291
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We present experimental observations of the suppressed superfluid transition temperature, Tca, superfluid fraction, rs/r and Leggett frequency of 3He-B in aerogel, WBa. We determine Tca from mass decoupling and the vanishing of the frequency shift away from the Larmor frequency in our different samples and different laboratories. We find that the suppressed transition temperature for 3He in aerogel occurs at a sample dependent, but approximately pressure independent, length, X =x0(P)/p1−Tca/Tc, where Tc and x0(P), are the transition temperature and the pressure dependent zero temperature coherence length for bulk 3He. Tca also occurs at a pressure independent value of the Leggett frequency of bulk 3He-B. Further, we find that when the superfluid fraction and square of the Leggett frequency are plotted against Tca −T (and not (Tca −T)/Tca), the results of each measurement nearly collapse on to a pressure independent but sample dependent plot, with no further scaling. When plotted on a log-log scale, both measurements exhibit power laws in the range 1.33-1.45. PACS numbers: 67.57.Bc, 67.57.Lm, 67.57.Pq
This is a Draft version This version's date is: 2008 This item is peer reviewed
https://repository.royalholloway.ac.uk/items/37ff81ce-d2bd-4e96-a0c8-f693bafaa105/1/
Deposited by Al Dean (ZSRA118) on 15-Mar-2010 in Royal Holloway Research Online.Last modified on 07-Jan-2011
(C) 2008 Springer Verlag, whose permission to mount this version for private study and research is acknowledged. The repository version is the author's final draft.
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