Abstract
Pure in highly porous aerogel forms an equal-spin pairing superfluid with transition temperatures suppressed from bulk values. We have measured the magnetic field dependence of the transition temperature from which it can be inferred that both magnetic and nonmagnetic quasiparticle scattering from solid at the aerogel surface is important to the superfluid state. Replacement of the solid on the surface of the aerogel with gives rise to a unequal spin pairing superfluid phase.
- Received 6 August 1996
DOI:https://doi.org/10.1103/PhysRevLett.77.4568
©1996 American Physical Society