Spin susceptibility of the superfluid ${}^3$He-B in aerogel

Abstract

The temperature dependence of paramagnetic susceptibility of the superfluid ^{3}He-B in aerogel is found. Calculations have been performed for an arbitrary phase shift of s-wave scattering in the framework of BCS weak coupling theory and the simplest model of aerogel as an aggregate of homogeneously distributed ordinary impurities. Both limiting cases of the Born and unitary scattering can be easily obtained from the general result. The existence of gapless superfluidity starting at the critical impurity concentration depending on the value of the scattering phase has been demonstrated. While larger than in the bulk liquid the calculated susceptibility of the B-phase in aerogel proves to be conspicuously smaller than that determined experimentally in the high pressure region.

10 pages, 4 figures, REVTeX

References in corpus (1)

• Magnetic Susceptibility of the Balian-Werthamer Phase of 3He in Aerogel

Cited by in corpus (8)

• Impurity Effects of Aerogel in Superfluid ${}^3$He
• On the spin susceptibility of noncentrosymmetric superconductors
• Phase Diagram of the Superfluid Phases of 3He in 98% Aerogel
• Impurity Effects on the A_1-A_2 Splitting of Superfluid 3He in Aerogel
• Magnetization and Spin-Diffusion of Liquid 3He in Aerogel
• Model of Inhomogeneous Impurity Distribution in Fermi Superfluids
• Low temperature specific heat and thermal conductivity in superconducting UTe2
• Magnetic Susceptibility of Andreev Bound States in Superfluid ${}^3$He-B