Superfluid Helium-3 in Confined Geometry

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• Lev Levitin (Royal Holloway, University of London)
• Thursday 25 October 2012, 11:00-12:00
• Rutherford building, Seminar Room B.

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We present our experimental studies of the p-wave superfluid 3He confined in slab geometry. In an agreement with theoretical predictions we observe a profound effect of confinement on a length-scale of order coherence length on the phase diagram. Nuclear magnetic resonance is used to identify the superfluid phases and make quantitative measurements of the order parameter. The degree of confinement is continuously tuned with pressure and surface quasiparticle scattering is modified by preplating the walls of the cell with 4He. This work opens the way for further studies of surface and size phenomena in superfluid 3He.

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