Magnetic Susceptibility of Andreev Bound States in Superfluid ${}^3$He-B

Abstract

Nuclear magnetic resonance measurements of the magnetic susceptibility of superfluid ${}^3$He imbibed in anisotropic aerogel reveal anomalous behavior at low temperatures. Although the frequency shift clearly identifies a low-temperature phase as the $B$ phase, the magnetic susceptibility does not display the expected decrease associated with the formation of the opposite-spin Cooper pairs. This susceptibility anomaly appears to be the predicted high-field behavior corresponding to the Ising-like magnetic character of surface Andreev bound states within the planar aerogel structures.

Published version

References in corpus (8)

• Symmetry Protected Topological Order and Spin Susceptibility in Superfluid 3He-B
• Impurity Effects on the A_1-A_2 Splitting of Superfluid 3He in Aerogel
• Globally Anisotropic High Porosity Silica Aerogels
• Superfluid 3He in a restricted geometry with a perpendicular magnetic field
• Fundamental dissipation due to bound fermions in the zero-temperature limit
• Anisotropic phases of superfluid 3He in compressed aerogel
• Superfluid ${}^3$He in Planar Aerogel
• Subgap in the surface bound states spectrum of Superfluid ${}^3$He-B with Rough Surface

Cited by in corpus (4)

• Anisotropic paramagnetic response of topological Majorana surface states in the superconductor ${\text{UTe}}_2$
• Surface State Dissipation in Confined 3He-A
• Transport of bound quasiparticle states in a two-dimensional boundary superfluid
• Planar and Nematic Aerogels: DLCA and Superfluid 3He