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VOLUME 86 (2007) | ISSUE 3 | PAGE 244
The Orientation Effect on Superfluid 3He in Anisotropic Aerogel
PACS: 67.57.-z
Abstract
We report on the orientation of the order parameter in the A-like and B-like phases of superfluid 3He immersed in uniaxially-compressed aerogel. By NMR methods we find that the orbital momentum of the A- and B-like phases is oriented along the deformation. In the A-like phase we observe a relatively narrow NMR line with an anomalously large negative frequency shift. We have succeeded in measuring the Leggett frequency in the A-like phase which shows the same energy gap suppression as in the B-like phase.