, Volume 135, Issue 5-6, pp 385-397

Superfluid 3He in the Zero-Temperature Limit

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Abstract

Superfluid 3He has a hierarchy of properties, each manifest as a ‘superfluid’. There is the mass superfluid, the spin superfluid and there should also be an orbital superfluid. These three ‘super’ fluids respond differently to the interpenetrating normal fluid and demand different temperature ranges to be studied fully. We discuss here the importance of work at very low temperatures, how we can cool to the lowest temperatures and finally present a selection of low temperature experiments which illustrate aspects of multiphase nature of the superfluid and of the three ‘superfluids’ mentioned above.

PACS numbers: 05.70 Ln, 05.70 Jk, 64.