Impurity Effects of Aerogel in Superfluid ${}^3$He

Abstract

The discovery of superfluid ${}^3$He in high porosity silica aerogels, and subsequent experimental and theoretical work, have led to a better general understanding of quasiparticle scattering from impurities in unconventional pairing systems. It is immensely helpful for understanding impurity effects in the case of superfluid ${}^3$He that the structure of its order parameter is well-established. An overview of impurity effects is presented with emphasis on those experiments which have a quantitative interpretation in terms of theoretical models for homogeneous and inhomogeneous scattering. The latter can account successfully for most experimental results.

Review Article, 16 pages, 20 figures

References in corpus (21)

• Enforced Electrical Neutrality of the Color-Flavor Locked Phase
• Models for Superfluid ${}^3$He in Aerogel
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• Strong Coupling Corrections to the Ginzburg-Landau Theory of Superfluid ^{3}He
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• Thermal Conductivity of Superfluid ${}^3$He in Aerogel
• Spin susceptibility of the superfluid ${}^3$He-B in aerogel
• Longitudinal NMR and Spin States in the A-like Phase of 3He in Aerogel
• Ultrasound attenuation of superfluid ${}^3$He in aerogel
• Stability of the A-like Phase of Superfluid 3He in Aerogel with Globally Anisotropic Scattering
• Acoustic Spectroscopy of Superfluid 3He in Aerogel
• Specific Heat of Disordered ${}^3$He

Cited by in corpus (21)

• Phase diagram of superfluid 3He in "nematically ordered" aerogel
• The Superfluid Glass Phase of 3He-A
• Fragility of surface states in topological superfluid ${}^3$He
• Superfluid 3He in Aerogel
• Anisotropic 2D Larkin-Imry-Ma state in polar distorted ABM phase of 3He in "nematically ordered" aerogel
• Stability of superfluid 3He-B in compressed aerogel
• Magnetic Impurities in the Pnictide Superconductor Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$
• Anisotropic phases of superfluid 3He in compressed aerogel
• Anisotropic Strong Coupling Effects on Superfluid 3He in Aerogels - Conventional Spin-Fluctuation Approach -
• Modification of the 3He Phase Diagram by Anisotropic Disorder
• Superfluid ${}^3$He in globally isotropic random media
• Spin-Nernst Effect in Time-Reversal-Invariant Topological Superconductors
• NMR Frequency Shifts and Phase Identification in Superfluid ${}^3$He
• Superfluid ${}^3$He in Planar Aerogel
• Spin caloritronics as a probe of nonunitary superconductors
• Ultrasound attenuation and a P-B-T phase diagram of superfluid 3He in 98% aerogel
• Dissipation signatures of the normal and superfluid phases in torsion pendulum experiments with 3He in aerogel
• Orbital-Flop Transition of Angular Momentum in a Topological Superfluid
• Vortex core transitions in superfluid 3He in globally anisotropic aerogels
• Coherent reaction of Fermi superfluid on correlated disorder
• Local structure of ordered and disordered states of 3He-A in aerogel