Phys. Rev. Lett. 88, 045505 (2002) [4 pages]Nucleation and Interfacial Coupling between Pure and Dirty Superfluid Phases of 3HeReceived 9 October 2001; published 15 January 2002 The nucleation of the first-order phase transition of superfluid 3He-B from superfluid 3He-A is quite remarkable since it requires a seed of the order of a micron. We have studied this nucleation for 3He confined to a very dilute silica aerogel. This dirty superfluid behaves in a manner similar to previous reports for the pure superfluid. But we have discovered a novel magnetically driven nucleation switch acting on the pure superfluid- B phase. Last, we find the surprising result that the proximity effect between the pure and dirty superfluids at their interface is insufficient to nucleate the B phase in either superfluid. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.88.045505
DOI:
10.1103/PhysRevLett.88.045505
PACS:
67.57.Pq, 64.60.Qb, 67.57.Np
See AlsoComment: S. N. Fisher, R. P. Haley, and G. R. Pickett, Comment on “Nucleation and Interfacial Coupling between Pure and Dirty Superfluid Phases of 3He”, Phys. Rev. Lett. 88, 209601 (2002). Reply: G. Gervais, K. Yawata, and W. P. Halperin, Gervais, Yawata, and Halperin Reply:, Phys. Rev. Lett. 88, 209602 (2002). |
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.