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The thermal boundary resistance of the superfluid He-3 A-B phase interface in the low temperature limit.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

<mark>Journal publication date</mark>7/09/2006
<mark>Journal</mark>AIP Conference Proceedings
Number of pages2
Pages (from-to)87-88
Publication StatusPublished
<mark>Original language</mark>English


We have constructed a vertical cylindrical cell in which we cool superfluid He-3 to the low temperature limit. At the top and bottom of this cylinder are pairs of vibrating wire resonators (VWRs), one to act as a heater and the other as a thermometer. Quasiparticle excitations are created by driving the heater VWRs. These excitations can only leave the cylinder via a small hole at the top. Using a shaped magnetic field, we can produce a layer of A phase across the tube, while maintaining low field B phase in the vicinity of the VWRs for reliable thermometry. Preliminary results show that the two A-B interfaces lead to a measurable extra resistance for quasiparticles between the top and bottom of the cylinder.