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

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

2008-02-25

arxiv.org/abs/0802.3667v1

Phys. Rev. B 77, 140502(R) (2008).

Physics

Condensed Matter

Superconductivity

3 pages, 4 figures, Submitted to PR Rapid Communications

Scientific paper

10.1103/PhysRevB.77.140502

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.

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