Stability of the A-like Phase of Superfluid 3He in Aerogel with Globally Anisotropic Scattering

Abstract

It has been suggested that anisotropic quasiparticle scattering will stabilize anisotropic phases of superfluid ${}^3$He contained within highly porous silica aerogel. For example, global anisotropy introduced via uniaxial compression of aerogel might stabilize the axial state, which is called the A-phase in bulk superfluid 3He. Here we present measurements of the phase diagram of superfluid 3He in a 98% porous silica aerogel using transverse acoustic impedance methods. We show that uniaxial compression of the aerogel by 17% does not stabilize an axial phase.

arXiv comment3 pages, 4 figures, Submitted to PR Rapid Communications

References in corpus (6)

• Models for Superfluid ${}^3$He in Aerogel
• Pairing States of Superfluid 3He in Uniaxially Anisotropic Aerogel
• Phase Diagram of the Superfluid Phases of 3He in 98% Aerogel
• The A-B Transition of Superfluid Helium-3 in Aerogel and the Effect of Anisotropic Scattering
• Longitudinal and Transverse NMR in Superfluid 3He in Anisotropic Aerogel
• Soliton-like Spin State in the A-like Phase of 3He in Anisotropic Aerogel

Cited by in corpus (6)

• Impurity Effects of Aerogel in Superfluid ${}^3$He
• Superfluid 3He in Aerogel
• Stability of superfluid 3He-B in compressed aerogel
• Modification of the 3He Phase Diagram by Anisotropic Disorder
• Mass coupling and $Q^{-1}ofimpurity-limitednormal$^3$He in a torsion pendulum
• Superfluid Phase Stability of ${}^3$He in Axially Anisotropic Aerogel